Grizzly Planer G9740Z User Manual

EXTREME-DUTY PLANERS

MODELS G9740/G9740Z/G9741/G9961/G9967/G9967Z

INSTRUCTION MANUAL

Model G9740 Shown

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#3978 PRINTED IN TAIWAN

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Table Of Contents

SECTION 1: SAFETY....................................................................................................................... 2

Safety Instructions For Power Tools.......................................................................................... 2

Additional Safety Instructions For Planers................................................................................. 4

SECTION 2: GENERAL INFORMATION......................................................................................... 5

SECTION 3: CIRCUIT REQUIREMENTS ........................................................................................ 6

G9967/G9967Z........................................................................................................................... 6

G9740/G9740Z........................................................................................................................... 6

G9741/G9961............................................................................................................................. 7

Extension Cords......................................................................................................................... 7

Grounding................................................................................................................................... 7

Rewire to 440V........................................................................................................................... 8

SECTION 4: MACHINE FEATURES................................................................................................ 9

About this Section ...................................................................................................................... 9

SECTION 5: SET UP...................................................................................................................... 10

About this Section .................................................................................................................... 10

Unpacking ................................................................................................................................ 10

Piece Inventory ........................................................................................................................ 11

Hardware Recognition Chart.................................................................................................... 12

Clean Up .................................................................................................................................. 13

Site Considerations.................................................................................................................. 13

SECTION 6: ASSEMBLY............................................................................................................... 14

Beginning Assembly................................................................................................................. 14

Dust Hood ................................................................................................................................ 14

Table Rollers............................................................................................................................ 15

Test Run................................................................................................................................... 16

SECTION 7: OPERATIONS ........................................................................................................... 17

Operational Tips....................................................................................................................... 17

Wood Characteristics............................................................................................................... 18

SECTION 8: MAINTENANCE ........................................................................................................ 19

General..................................................................................................................................... 19

Cleaning ................................................................................................................................... 19

Table ........................................................................................................................................ 19

Lubrication................................................................................................................................ 19

V-Belt........................................................................................................................................ 20

Maintenance Log...................................................................................................................... 21

SECTION 9: SERVICE ADJUSTMENTS ....................................................................................... 22

About Service........................................................................................................................... 22

Adjustment Controls................................................................................................................. 22

Cutterhead Knives.................................................................................................................... 23

Carbide Cutters........................................................................................................................ 24

Table ........................................................................................................................................ 26

Feed Rollers & Pressure Bar ................................................................................................... 29

Feed Roller Tension................................................................................................................. 31

Chip Deflector .......................................................................................................................... 31

SECTION 10: CLOSURE ............................................................................................................... 32

G9740/G9740Z Machine Data Sheet....................................................................................... 33

G9967/G9967Z Machine Data Sheet....................................................................................... 34

G9741/G9961 Machine Data Sheet......................................................................................... 35

G9740/G9740Z/G9967/G9967Z Parts Diagrams and List....................................................... 36

G9967/G9967Z Wiring Diagrams............................................................................................. 61

G9740/G9740Z Wiring Diagrams............................................................................................. 64

G9741/G9961 Wiring Diagrams............................................................................................... 67

Warranty and Returns.............................................................................................................. 70

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SECTION 1: SAFETY

For Your Own Safety Read Instruction

Manual Before Operating This Equipment

The purpose of safety symbols is to attract your attention to possible hazardous conditions. This

manual uses a series of symbols and signal words which are intended to convey the level of

importance of the safety messages. The progression of symbols is described below. Remember

that safety messages by themselves do not eliminate danger and are not a substitute for proper

accident prevention measures.

Indicates an imminently hazardous situation which, if not avoided,

WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided,

COULD result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, MAY result in minor or mod-

erate injury. It may also be used to alert against unsafe practices.

This symbol is used to alert the user to useful information about

proper operation of the equipment.

NOTICE

Safety Instructions For Power Tools

1. KEEP GUARDS IN PLACE and in working

5. KEEP CHILDREN AND VISITORS AWAY.

All children and visitors should be kept at a

safe distance from work area.

order.

2. REMOVE ADJUSTING KEYS AND

WRENCHES. Form habit of checking to

see that keys and adjusting wrenches are

removed from tool before turning on.

6. MAKE WORKSHOP CHILD PROOF with

padlocks, master switches, or by removing

starter keys.

3. KEEP WORK AREA CLEAN. Cluttered

7. NEVER FORCE TOOL. It will do the job

better and safer at the rate for which it was

designed.

areas and benches invite accidents.

4. NEVER

USE

DANGEROUS

ENVIRONMENT. Do not use power tools

in damp or wet locations, or where any

flammable or noxious fumes may exist.

Keep work area well lighted.

8. USE RIGHT TOOL. Do not force tool or

attachment to do a job for which it was not

designed.

-2-

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Safety Instructions For Power Tools

9. USE PROPER EXTENSION CORD. Make

sure your extension cord is in good condi-

tion. Conductor size should be in accor-

dance with the chart below. The amperage

rating should be listed on the motor or tool

nameplate. An undersized cord will cause

a drop in line voltage resulting in loss of

power and overheating. Your extension

cord must also contain a ground wire and

plug pin. Always repair or replace exten-

sion cords if they become damaged.

14. MAINTAIN TOOLS WITH CARE. Keep

tools sharp and clean for best and safest

performance. Follow instructions for lubri-

cating and changing accessories.

15. DISCONNECT TOOLS before servicing

and changing accessories, such as blades,

bits, cutters, and the like.

16. REDUCE THE RISK OF UNINTENTIONAL

STARTING. Make sure switch is in OFF

position before plugging in.

Minimum Gauge for Extension Cords

LENGTH

17. USE RECOMMENDED ACCESSORIES.

Consult the owner’s manual for recom-

mended accessories. The use of improper

accessories may cause risk of injury.

AMP RATING

0-6

25ft

50ft 100ft

7-10

11-12

18. CHECK DAMAGED PARTS. Before fur-

ther use of the tool, a guard or other

part that is damaged should be carefully

checked to determine that it will operate

properly and perform its intended func-

tion. Check for alignment of moving parts,

binding of moving parts, breakage of parts,

mounting, and any other conditions that

may affect its operation. A guard or other

part that is damaged should be properly

repaired or replaced.

13-16

17-20

21-30

10. WEAR PROPER APPAREL. Do not wear

loose clothing, gloves, neckties, rings,

bracelets, or other jewelry which may get

caught in moving parts. Non-slip footwear

is recommended. Wear protective hair cov-

ering to contain long hair.

19. NEVER LEAVE TOOL RUNNING

UNATTENDED. TURN POWER OFF. Do

not leave tool until it comes to a complete

stop.

11. ALWAYS USE SAFETY GLASSES. Also

use face or dust mask if cutting operation

is dusty. Everyday eyeglasses only have

impact resistant lenses, they are NOT

safety glasses.

20. NEVER USE UNDER THE INFLUENCE of

alcohol or drugs, or when tired.

12. SECURE WORK. Use clamps or a vise to

hold work when practical. It is safer than

using your hand and frees both hands to

operate tool.

21. NEVER ALLOW UNSUPERVISED OR

UNTRAINED PERSONNEL TO OPERATE

THE MACHINE. Make sure any instruc-

tions you give in regards to the operation

of the machine are approved, correct, safe,

and clearly understood.

13. NEVER OVERREACH. Keep proper foot-

ing and balance at all times.

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Additional Safety Instructions For Planers

1. READ THIS ENTIRE MANUAL BEFORE

TURNING THE PLANER ON.

10. DO NOT REMOVE MORE THAN ⁄4"

FROM THE SURFACE OF THE WOOD

STOCK IN A SINGLE PASS.

2. ENSURE THAT THE MACHINE IS ON

FLAT, STABLE GROUND BEFORE USE.

Any “wobbles” must be corrected by shim-

ming or blocking before operation.

11. INSPECT YOUR STOCK BEFORE PLAN-

ING. Never plane stock with nails, staples

or other foreign objects which may be

embedded in the surface. Always properly

prepare workpieces before running them

through the planer. Do not plane lumber

with loose knots or knots that may become

loose during planing.

3. NEVER PLANE MATERIAL OTHER

THAN WOOD WITH THIS MACHINE.

4. NEVERPOSITIONFINGERSORTHUMBS

NEAR THE INFEED ROLLER.

12. DO NOT ATTEMPT TO REMOVE JAMS

UNTIL POWER IS DISCONNECTED and

all moving parts have come to a complete

stop.

5. ENSURE THAT THE PLANER IS PROP-

ERLY ADJUSTED AND THAT THERE

ARE NO LOOSE PARTS BEFORE OPER-

ATING.

13. DO NOT PLANE WORKPIECES LESS

THAN 12" LONG AND ¹⁄4" THICK.

6. PLANE IN THE SAME DIRECTION AS

THE GRAIN OF THE WOOD STOCK.

14. DO NOT OPERATE PLANER WITH DULL

OR DAMAGED KNIVES.

7. ALWAYS STAND TO THE SIDE OF

THE PLANER WHILE FEEDING THE

WORKPIECE.

15. ALWAYS UNPLUG THE PLANER

WHENEVER

ADJUSTMENTS that would bring your

hands near the cutterhead.

MAKING

ANY

8. DO NOT LOOK INTO THE MOUTH OF

THE PLANER DURING OPERATION!

9. ALWAYS PROVIDE ADEQUATE IN-

FEED AND OUTFEED SPACE WHEN

OPERATING THE PLANER. Always sup-

port long pieces of stock on both sides of

the planer.

16. IF AT ANY TIME YOU ARE EXPERIENC-

ING DIFFICULTIES PERFORMING THE

INTENDED OPERATION, STOP USING

THE PLANER! Then contact our service

department or ask a qualified expert how

the operation should be performed.

No list of safety guidelines can be complete.

Every shop environment is different. Always

consider safety first, as it applies to your

individual working conditions. Use this and

other machinery with caution and respect.

Failure to do so could result in serious per-

sonal injury, damage to equipment or poor

work results.

Like all power tools, there is danger associ-

ated with planers. Accidents are frequently

caused by lack of familiarity or failure to

pay attention. Use this tool with respect

and caution to lessen the possibility of

operator injury. If normal safety precau-

tions are overlooked or ignored, serious

personal injury may occur.

-4-

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SECTION 2: GENERAL INFORMATION

If you have any criticisms that you feel we should

address in our next printing, please write to us at

the address below:

Read the manual before

assembly and operation.

Become familiar with the

Grizzly Industrial, Inc.

Technical Documentation

P.O. Box 2069

⁄O

machine and its opera-

tion before beginning

any work. Serious per-

sonal injury may result

if safety or operational

information is not under-

stood or followed.

Bellingham, WA 98227

Most important, we stand behind our machines.

We have an excellent Service Department at your

disposal should the need arise. If you have any

service questions or parts requests, please call or

write to us at the location listed below.

Grizzly Industrial, Inc. is proud to offer the

Extreme Duty Planers. These planers are part

of Grizzly’s growing family of fine woodworking

machinery. When used according to the guide-

lines stated in this manual, you can expect years

of trouble-free, enjoyable operation.

Grizzly Industrial, Inc.

1203 Lycoming Mall Circle

Muncy, PA 17756

Phone:(570) 546-9663

Fax:(800) 438-5901

E-Mail: [email protected]

Web Site: http://www.grizzly.com

The Extreme Duty Planers are the same machine

with the exception of the motor size, electrical

phase and cutterhead differences. Please refer

to the chart below to distinguish planer differ-

ences.

The specifications, drawings, and photographs

illustrated in this manual represent the machine

as supplied when the manual was prepared.

However, owing to Grizzly’s policy of continuous

improvement, changes may be made at any time

with no obligation on the part of Grizzly. For your

convenience, we always keep current Grizzly

manuals available on our website at www.griz-

zly.com. Any updates to your machine will be

reflected in these manuals as soon as they are

complete.

These planers are intended for heavy-duty pro-

fessional use and are capable of operating at

5000 RPM with a 20-40 FPM feed rate.

We are pleased to provide this manual with the

Extreme Duty Planers. It was written to guide

you through assembly, review safety consider-

ations, and cover general operating procedures.

It represents our latest effort to produce the best

documentation possible.

Description G9967

G9967Z

5 HP

G9740

7¹⁄2 HP

G9740Z

7¹⁄2 HP

G9741

10 HP

G9961

10 HP

Motor

Phase

5 HP

1-Phase

4 Knife

1-Phase

Spiral

3-Phase

4 Knife

3-Phase

Spiral

3-Phase

4 Knife

3-Phase

Spiral

Cutterhead

Extreme Duty Planers

-5-

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SECTION 3: CIRCUIT REQUIREMENTS

G9740/G9740Z

G9967/G9967Z

The Model G9740/G9740Z is prewired with a 7¹⁄2

HP 220V 3-phase motor, which may be rewired to

440V. Please use the following specs preparing

your shop for the machine, and always have the

wiring inspected by licensed electrician before

operating your machine.

The Model G9967/G9967Z Planer is prewired

with a 5 HP 220V single-phase motor. Please

use the following specs when preparing your

shop for the machine, and always have the wiring

inspected by a licensed electrician before operat-

ing your machine.

Total Amperage Draw at 220V.............. 26 amp

Circuit Breaker at 220V......................... 30 amp

Plug and Receptacle at 220V ................ L15-30

Total Amperage Draw at 440V.............. 13 amp

Circuit Breaker at 440V......................... 15 amp

Plug and Receptacle at 440V ................ L16-20

Cord..............................................3-pole, 4-wire

Total Amperage Draw ........................... 39 amp

Recommended Circuit Breaker............ 40 amp

Recommended Plug and Receptacle ....... 6-50

Cord ...............................................2-pole, 3-wire

The planer must be connected to a dedicated

circuit. It should not share a circuit with any

other machine. If frequent circuit failure occurs

when using the planer, contact our Service

Department.

The planer must be connected to a dedicated

circuit. It should not share a circuit with any

other machine. If frequent circuit failure occurs

when using the planer, contact our Service

Department.

In addition, you may also “hard-wire” the planer

directly to your panel, provided you place a dis-

connect near the machine. Check the electrical

codes in your area for specifics on wiring require-

ments.

In addition, you may also “hard-wire” the planer

directly to your panel, provided you place a dis-

connect near the machine. Check the electrical

codes in your area for specifics on wiring require-

ments.

Figure 1. Typical 6-50 plug and receptacle.

Figure 2. Typical L15-30 plug and receptacle.

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G9741/G9961

Grounding

The Model G9740/G9740Z Planer is prewired

with a 10 HP 3-phase motor, which may be

rewired to 440V. Please use the following specs

preparing your shop for the machine, and always

have the wiring inspected by licensed electrician

before operating your machine.

In the event of an electrical short, grounding

reduces the risk of electric shock by providing

a path of least resistance to disperse electric

current. This tool is equipped with an electric

cord that has an equipment-grounding conductor

which must be properly connected to a grounding

plug. The plug must be plugged into a matching

outlet that is properly installed and grounded in

accordance with all local codes and ordinances.

Improper connections of the electrical-grounding

conductor can result in the risk of electric shock.

Total Amperage Draw at 220V.............. 32 amp

Circuit Breaker at 220V......................... 35 amp

Plug and Receptacle at 220V .................. 15-50

Total Amperage Draw at 440V.............. 15 amp

Circuit Breaker at 440V......................... 20 amp

Plug and Receptacle at 440V ................ L16-20

Cord..............................................3-pole, 4-wire

This equipment must be

grounded. Verify that any

existing electrical out-

let and circuit you intend

to plug into is actually

grounded. Under no cir-

cumstances should the

grounding pin from any

three-pronged plug be

removed. Serious injury

may occur.

The planer must be connected to a dedicated

circuit. It should not share a circuit with any other

machine. If frequent circuit failure occurs when

using the planer, contact our service depart-

ment.

In addition, you may also “hard-wire” the planer

directly to your panel, provided you place a lock-

ing power disconnect near the machine. Check

the electrical codes in your area for specifics on

wiring requirements.

Extension Cords

We do not recommend the use of extension

cords on 220V equipment. It is much better to

arrange the placement of your equipment and the

installed wiring to eliminate the need for exten-

sion cords.

Figure 3. Typical 15-50 plug and receptacle.

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3. Remove the old feed motor relay and install

Rewire to 440V

the RHN-18 (1.7-2.5A) relay in its place.

4. Set the dial on the new relay to 2A.

The Model G9740/G9740Z/G9741/G9961 can

be rewired from 220V to 440V. Before rewir-

ing, purchase the Grizzly 440V conversion kit

(#P97400120-11).

5. Remove the old elevation motor relay and

install the RHN-18 (1-1.7A) relay in its

place.

6. Set the dial to 1A.

Please Note—The Model G9967/G9967Z cannot

be rewired to 440V.

7. At the main motor overload relay (5-60A), set

dial to the following amperage, depending on

your machine:

The 440V wiring conversion procedure requires

rewiring the transformer, installing new overload

relays for the feed and elevation motors, setting

all the overload relay dials to the correct position,

and rewiring the motors.

• G9740/G9740Z....................................10A

• G9741/G9961 ......................................13A

8. Change the wiring on all three motor terminal

boxes to match the diagram on the inside of

the terminal box cap (use the wiring diagram

pages in the “Reference Info” section at the

back of this manual if the diagram is missing

from the inside of the cap).

To rewire the planer:

1. Open the control panel so that you have

access to the electronic components inside.

2. On the transformer, move the wire that is

connected to the “220” terminal to the “440”

terminal.

-8-

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SECTION 4: MACHINE FEATURES

Cutterhead

About this Section

Pressure

Bar

Chip Breaker

Familiarize yourself with the planer controls before

turning the machine on. Figures 18 and 19 point

out these controls.

Front Feed

Roller

Rear Feed

Roller

Anti-Kickback

Claw

Bed

Rollers

Table Height

Bed Roller

Height Lever

Table

Power

Cutterhead

Motor

Figure 6. Planer components.

Feed Motor

Power

Indicator

Light

Figure 18. Control panel.

Micro-Adjust

Cutterhead

Knob

Lock

Table Height

Lock

Table Roller

Height Control

Feed Speed

Control

Figure 19. Adjustment controls.

Extreme Duty Planers

-9-

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SECTION 5: SET UP

Unpacking

About this Section

Your machine was carefully packed when it left

our warehouse. If you discover the machine is

damaged after you have signed for delivery,

please immediately call our Customer Service at

(570) 546-9663 for advice.

The purpose of this section is to guide you

through the required steps to get your machine

out of its crate and into operating condition.

Save the containers and all packing materials

for possible inspection by the carrier or its agent.

Without the packing materials, filing a freight claim

can be difficult. If you need assistance determin-

ing whether you need to file a freight claim, or

with the procedure to file one, please contact our

Customer Service at (570) 546-9663.

This machine presents

serious injury hazards

to untrained users. Read

through this entire man-

ual to become familiar

with the controls and

operations before start-

ing the machine!

These Planers are heavy

machines, up to 1853 lbs.

shipping weight. DO NOT

over-exert yourself while

unpacking or moving

your machine—use power

equipment to move the

machine. Serious person-

al injury may occur if safe

moving methods are not

followed.

Wear safety glasses dur-

ing the entire set up pro-

cess!

When you are completely satisfied with the con-

dition of your shipment, you should inventory its

parts.

-10-

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G9740Z/G9961/G9967Z (Spiral Cutterheads)

Piece Inventory

Part

• Planer Unit

Qty

After all the parts have been removed from the

carton, you should have:

• Dust Hood

• T-20 Torx^®Driver

• Misc. Bag of T-20 Driver Bits

• Misc. Bag of T-20 Flat Screws

• Pressure Gauge

• Reducing Valve

• Bracket

G9740/G9741/G9967 (4-Knife Cutterheads)

Part

• Planer Unit

Qty

• Steel Rod (Handle)

• Reversible Air Screwdriver

• Phillips Bits

• Dust Hood

• Combo Wrench 11x13

• Combo Wrench 12x14

• Combo Wrench 17x19

• Hex Wrench 5mm

• Knife Setting Jig

• Air Coupler

• Replacement Carbide Inserts

In the event that any nonproprietary parts are

missing (e.g. a nut or a washer), we would be

glad to replace them, or for the sake of expedi-

ency, replacements can be obtained at your local

hardware store.

Extreme Duty Planers

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Hardware Recognition Chart

-12-

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Clean Up

Site Considerations

The unpainted surfaces are coated with a waxy

oil to protect them from corrosion during ship-

ment. Remove this protective coating with a sol-

vent cleaner or citrus-based degreaser such as

Grizzly’s G7895 Degreaser. To clean thoroughly,

some parts may need to be removed. For opti-

mum performance from your machine, make

sure you clean all moving parts or sliding

contact surfaces that are coated. Avoid chlo-

rine-based solvents as they may damage painted

surfaces should they come in contact. Always

follow the manufacturer’s instructions when using

any type of cleaning product.

FLOOR LOAD

Your Extreme Duty Planer represents a very

large weight load in a moderate sized footprint.

Most commercial shop floors will be adequate for

the weight of the planer. Some floors may require

additional support. Contact an architect or struc-

tural engineer if you have any question about the

ability of your floor to handle the weight.

WORKING CLEARANCES

Working clearances can be thought of as the

distances between machines and obstacles that

allow safe operation of every machine with-

out limitation. Consider existing and anticipated

machine needs, size of material to be processed

through each machine, and space for auxiliary

stands and/or work tables. Also consider the rela-

tive position of each machine to one another for

efficient material handling. Be sure to allow your-

self sufficient room to safely run your machines in

any foreseeable operation.

Do not use gasoline or

other petroleum-based

solvents to clean with.

They have low flash

points which make them

extremely flammable.

A risk of explosion and

burning exists if these

products are used.

LIGHTING AND OUTLETS

Lighting should be bright enough to eliminate

shadow and prevent eye strain. Electrical circuits

should be dedicated or large enough to handle

combined motor amp loads. Outlets should be

located near each machine so power or exten-

sion cords are not obstructing high-traffic areas.

Be sure to observe local electrical codes for prop-

er installation of new lighting, outlets or circuits.

Many of the solvents

commonly used to clean

machinery can be toxic

when inhaled or ingest-

ed. Always work in well-

ventilated areas far from

potential ignition sources

when dealing with sol-

vents. Use care when dis-

posing of waste rags and

towels to be sure they do

not create fire or environ-

mental hazards.

Make your shop “child safe.”

Ensure that your workplace

is inaccessible to children

by closing and locking all

entrances when you are

away. Never allow visitors in

your shop when assembling,

adjusting or operating equip-

ment.

Extreme Duty Planers

-13-

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SECTION 6: ASSEMBLY

Dust Hood

Beginning Assembly

Most of your Extreme Duty Planer has been

assembled at the factory, but some parts must

be assembled or installed after delivery. We

have organized the assembly process into steps.

Please follow along in the order presented in this

section.

A dust hood with a 5" dust port comes with the

planer for dust collection purposes. Install the

dust hood with M6-1.0 x 10 screws. The dust

hood should look like Figure 4 when installed.

Keep loose clothing out

of the way of machin-

ery and keep hair pulled

back.

Disconnect power to the

machine when perform-

ing any maintenance or

assembly. Failure to do

this may result in serious

personal injury.

Figure 4. Dust hood installed.

Wear safety glasses dur-

ing the entire assembly

process. Failure to com-

ply may result in serious

personal injury.

Planer knives are danger-

ously sharp! Use extreme

caution when working

near cutting surfaces.

Failure to exercise care

while working near knives

could result in severe

injury.

-14-

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2. Determine the appropriate height for the type

Table Rollers

of stock you are using.

The scale at the base of the adjustment lever

is numbered “0”, “1” and “2”. These numbers

represent how many millimeters the top

of the rollers are above the surface of the

table.

The height of the table rollers will vary, depending

on the type of material you intend to plane. When

planing rough stock, you will need to set the roll-

ers high to keep the lumber from dragging along

the table. Milled lumber should be planed with the

rollers set lower.

Since 1mm = .03937", figure that each notch

on the scale is approximately .004". The

ideal tolerance for the height of the table roll-

ers is between .002"-.016".

To adjust the table rollers correctly:

1. Loosen the lock on the adjustment lever

shown in Figure 17. Pull the lever up to raise

the table rollers.

Note—If the table rollers are too high, snipe

or chipping may occur at the ends of the

workpiece. Only use the higher settings for

rough cut lumber. If you are unsure about

which height to use, experiment on scrap

lumber by using the trial and error method.

Always start at the smaller tolerances and

work up.

Height

Scale

Lock

3. Pull the adjustment lever up to the appro-

priate scale marks. Secure the adjustment

lever by tightening the lock.

Adjustment

Lever

Figure 17. Roller height adjustment controls.

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Test Run

Read the entire manu-

al before making any

cuts with your planer.

Serious personal injury

may result if safety or

operational information

is not understood or fol-

lowed.

Once assembly is complete and adjustments are

done to your satisfaction, you are ready to start

the machine.

Turn on the power supply at the main panel.

Press the START button. Make sure your finger

is poised on the STOP button, just in case there

is a problem. The planer should run smoothly with

little or no vibration or rubbing noises. Strange or

unnatural noises should be investigated and cor-

rected before operating the machine further.

Run the planer for a short time to ensure that the

moving parts are working properly with no exces-

sive vibration. If any problem develops, correct it

before attempting to use the machine.

If you cannot locate the source of unusual noises

or cannot fix any problems that arise, immediately

contact our Service Department at (570) 546-

9663 for help.

-16-

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SECTION 7: OPERATIONS

Operational Tips

Keep loose clothing out

of the way of machin-

ery and keep hair pulled

back.

•

Inspect lumber for defects, warping, cupping,

twisting, and foreign objects (nails, staples,

imbedded gravel, etc.). If you have any

question about the quality of your lumber,

do not use it. Remember, wood stacked on

a concrete floor can have small pieces of

stone or concrete pressed into its surface.

Disconnect power to the

machine when perform-

ing any adjustments or

maintenance. Failure to

do this may result in seri-

ous personal injury.

•

Use the full width of the planer, Alternate

between the left, the right and the middle

when feeding lumber into the planer. Your

knives will remain sharp much longer.

•

Scrape all glue off of joined boards before

planing.

Wear safety glasses dur-

ing all operations on the

planer. Failure to com-

ply may result in serious

personal injury.

Plane ONLY natural wood fiber (i.e. DO NOT

plane wood composites).

Surface wood with the grain. NEVER feed

end-cut or end-grained lumber into your

planer.

•

DO NOT use boards with knots, splits, cross-

grain or other obvious blemishes or defects.

They can damage the machine and pose the

possibility of operator injury.

Always wear a dust mask

when operating the plan-

er. Using this machine

produces sawdust which

may cause allergic reac-

tions or respiratory prob-

lems.

•

Keep your work area clear.

Avoid planing wood with a high water con-

tent. Wood with more than 20% moisture

content or wood exposed to rain or snow will

plane poorly and cause excessive wear to

the knives and the motor. Excess moisture

can also hasten rust and corrosion.

NOTICE

If you are not familiar with how to properly

use a planer. WE STRONGLY RECOMMEND

that you read books, trade magazines, or

get formal training.

•

During operation, always use the table

height lock knob for consistent and accurate

results.

Always true any cupped or warped stock on

a jointer before planing.

Extreme Duty Planers

-17-

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snipe is unlikely. More likely, you will be able to

reduce it to a tolerance of .002". If snipe under

that level is a problem, consider cutting lumber

longer that your intended work length and cut off

the excess after planing is completed.

Wood Characteristics

The species of wood, as well as condition, will

affect planing ability—the harder the wood, the

more difficult it will be to plane. We have included

a list of wood characteristics you may encoun-

ter when planing, The following descriptions of

defects will give you some possible answers to

problems that may arise.

Uneven Knife Marks — Uneven knife marks

can occur when the chip breaker is set too high.

Inspect cutterhead bearings if re-adjustment of

the chip breaker fails to remedy the situation.

Chatter Marks — Usually caused by incorrect

chip breaker and pressure bar setting heights.

Chatter marks can also be caused by running a

narrow wood piece through the planer at either

the right or left end of the cutterhead. Chatter,

like uneven knife marks, will show in the form of a

“washboard” look. Chatter marks are more likely

to be inconsistent in appearance than uneven

knife marks.

Chipped Grain (Tear Out) — Usually a result

of cutting against the grain, or planing wood

with knots or excessive amount of cross grain.

Chipped grain can also be caused by dull knives

or misaligned chip breaker. Often, chipped grain

can be avoided by slowing down the feed rate

and by taking shallow cuts, If those options do

not work, inspect your lumber and determine if its

grain pattern is causing the problem. If the wood

does not show substantial crossgrain, inspect

your knives for sharpness and inspect the chip

breaker for proper alignment.

Wavy Surface — Caused by poor knife height

adjustment, wavy surface appears when one

knife is taking deeper cuts than the rest of the

knives. Remedy by resetting the knives to a toler-

ance of approximately .001" from one end to the

other.

Fuzzy Grain (Raised Grain) — Usually caused

by surfacing lumber with too high of a moisture

content. Sometimes fuzzy grain is a characteristic

of wood such as basswood. Fuzzy grain can also

be caused by dull knives or an incorrect grinding

bevel. Check with a moisture meter. If moisture is

greater than 20%, sticker the wood and allow it to

dry. Otherwise, inspect the knife condition.

Pitch & Glue Build-Up — Glue and resin build-

up on the rollers and the cutterhead will cause

overheating by decreasing cutting sharpness

while increasing drag in the feed mechanism.

The result can include scorched lumber as well

as uneven knife marks and chatter.

Glossy Surface — Usually caused by dull knives

taking shallow cuts at a slow feed speed. Surface

gloss will usually be accompanied by overheat-

ing. Lumber will often be scorched and eventually

damage to the knives will occur. If the knives are

sharp on inspection, increase feed speed or cut-

ting depth.

Chip Marks — Occur when chips are not prop-

erly expelled from the cutterhead. The knives

catch the chips and drag them across the lum-

ber being planed. Chips tend to be random and

non-uniform (compared to chipped grain). This

problem can be caused by exhaust blockage or

too much room between the cutterhead and the

chip deflector. Using a dust collection system in

combination with the planer can help reduce chip

marks. Inspect the chip deflector and re-adjust

spring tension.

Snipe — Occurs when board ends have more

material removed them the rest of the board.

Usually caused when one or both of the table roll-

ers are set too high. Can also be caused by the

chip breaker or pressure bar being set too high.

However, a small amount of snipe is inevitable.

Snipe can be minimized by proper adjustment of

the planer components, but complete removal of

-18-

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SECTION 8: MAINTENANCE

Table

The table and other non-painted surfaces on the

Extreme Duty Planer should be protected against

rust and pitting. Wiping the table clean after every

use ensures that wood dust isn’t allowed to trap

moisture against bare metal surfaces.

Disconnect power to the

machine when perform-

ing any adjustments or

maintenance. Failure to

do this may result in seri-

ous personal injury.

Tables can be kept rust-free with regular applica-

tions of products like Boeshield^®T-9. For long

term storage you may want to consider products

like Kleen Bore's Rust Guardit™.

General

Periodic maintenance on your 20" Extreme Duty

Planer Planer ensures its optimum performance.

Make a habit of inspecting your planer each time

you use it.

Check for the following conditions and repair or

replace when necessary.

Lubrication

•

Loose mounting bolts.

Worn switch.

The Extreme Duty Planers have four lubrication

points that need to be lubricated according to

planer usage. Always lubricate more often under

dusty/dirty conditions. As a general rule, lubricate

as follows:

Worn or damaged cords and plugs.

Damaged V-belt.

1. Micro-Adjustment Knob — Once a week

for heavy use; once a month for moderate

use. See Figure 20 for grease fitting loca-

tion.

Any other condition that could hamper the

safe operation of this machine.

Cleaning

Regularly blow out cabinet, feed rollers, chip

breakers and cutterhead with compressed air

(always wear safety glasses and a dust mask

when doing this) and keep the dust port clear.

Figure 20. Micro-adjust grease fitting.

Extreme Duty Planers

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2. Transmission Box — Lubricate after every

12 hours of continuous use. See Figure 21

for location.

V-Belt

Avoid getting grease or oil on the V-belts or pul-

leys. Check the V-belts, as part of a monthly

inspection for proper tension and belt condition.

Cracking and glazing could result in belt failure.

Replace the belt if such conditions appear.

To loosen/tighten belt tension:

1. Thread in the motor mount adjustment bolts

(Figure 23) to loosen the V-belt. Unthread

the adjustment bolts to tighten the V-belt.

Figure 21. Transmission box grease fitting.

3. Table Lifting Gears — Once a week for

heavy use; once a month for moderate use.

See Figure 22 for locations.

Figure 23. Motor mount adjustment bolts.

Figure 22. Table lifting gear grease fittings.

4. Chain — Clean and regrease as determined

by visible inspection for dust or grime in the

chain grease.

Always wipe off excess grease from all loca-

tions after lubricating!

-20-

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Maintenance Log

Maintenance Performed

Date

Approximate Hours Of Use

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-21-

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SECTION 9: SERVICE ADJUSTMENTS

Adjustment Controls

Always

disconnect

power to the machine

before performing ser-

vice adjustments. Failure

to do this may result in

serious personal injury.

Figures 5 and 6 point out the primary controls

and components that will be used during the

adjustment process. Take a few minutes to famil-

iarize yourself with these.

Cutterhead Lock

Micro-Adjust

Height Knob

Planer knives are danger-

ously sharp! Use extreme

caution when working

near cutting surfaces.

Failure to exercise care

while working near knives

could result in severe

injury.

Table Height

Lock

About Service

Height Controls

Figure 5. Planer controls.

This section is designed to help the operator with

adjustments that were made at the factory and

that might also need to be made during the life of

the machine.

Cutterhead

Chip Breaker

Pressure

Bar

This section is provided for your convenience—

it is not a substitute for the Grizzly Service

Department. If any adjustments arise that are not

described in this manual, then feel free to call the

Grizzly Service Department at (570) 546-9663.

Front Feed

Roller

Rear Feed

Roller

Anti-Kickback

Claw

Similarly, if you are unsure of how to perform

any procedure in this section, the Grizzly Service

Department will be happy to guide you through

the procedures or help in any other way.

Bed

Rollers

Bed Roller

Height Lever

Table

Figure 6. Planer components.

-22-

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3. Remove the hex nuts and springs from the

tension studs shown in Figure 8. This will

allow the pressure bar to rotate up and over

the cutterhead.

Cutterhead Knives

The Model G9740/G9741/G9967 features a 4-

knife cutterhead. The knives are factory set to

.071". Unless you are having problems related

to the knives or are removing them for sharpen-

ing/replacement, assume that your knives are

adjusted correctly. To be safe, always test the

planer with a scrap piece of wood before using

expensive stock.

4. Remove the four bolts that attach the pres-

sure bar to the eccentric ring.

When adjusting, make adjustments accurate

to within ±.001" from one side to the other.

Improperly adjusted knives can unbalance the

cutterhead and shorten the bearing life, as well as

produce substandard planing results.

Pressure Bar

Tension Studs

Figure 8. Pressure bar and tension studs.

Planer knives are danger-

ously sharp! Use extreme

caution when working

near cutting surfaces.

Failure to exercise care

while working near knives

could result in severe

injury.

5. Without bumping the knife edge, carefully

take the pressure bar out of the planer. You

can now access the cutterhead with the knife

setting jig.

6. To prepare the knife setting jig, back all four

of the screws out of the feet. Adjusting one

screw at a time, set the screw even with the

surface of the jig foot. Turn the screw exactly

2¹⁄2" turns (this is approximately .071"), or

measure this distance with a caliper. Tighten

the check nut, making sure that the screw

does not move. Adjust the other three screws

by using this same procedure.

To inspect the knife set:

1. Make sure the planer is disconnected

from the power source!

2. Open the top cover to gain access to the

cutterhead. Lock the cutterhead in place with

the cutterhead lock as shown in Figure

7. Place the jig on the cutterhead. If the knife

is adjusted right, the feet should touch the

cutterhead body on both sides of the knife,

and the knife should barely touch the jig.

Cutterhead

Lock

8. Repeat this inspection for the other two

knives.

To adjust the knife set:

1. Before beginning, make sure you have fol-

lowed steps 1-6 from the knife inspection

instructions above!

2. Make sure the planer is disconnected

from the power source!

Figure 7. Engaging cutterhead lock.

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3. Wear heavy leather gloves or place a rag

over the exposed knife to protect your hands

if the wrench slips while loosening the gib

bolts. Loosen all the gib bolts on one knife.

10. Replace all of the removed planer parts

and adjust the pressure bar (pages 17-18)

before operating the planer.

Aftermarket Knife Setting Jigs

4. Insert a 4mm hex wrench into the jack screws

(accessible from holes in the cutterhead) as

shown in Figure 9. Turn these screws to

lower the knife enough to clear the jig when

it is placed on the cutterhead body.

To ease the knife adjustment process, con-

sider using a Planer Pal^®available in the current

Grizzly catalog. Using magnets, a pair of these

devices will automatically hold the knife blades

within .001" of each other, thereby allowing you to

quickly and accurately lock the knife in place.

Carbide Cutters

The Models G9740Z/G9967Z/G9961 feature spi-

ral cutterheads. These spiral cutterheads cut with

indexable carbide inserts which have four cut-

ting edges. Although only one edge can cut at a

time, the inserts can be easily rotated when they

get dull, essentially providing four factory sharp

edges before requiring replacement. Indexable

inserts never need to be adjusted for height, only

rotated and securely fastened to the cutterhead.

Figure 9. Adjusting knife jack screws.

5. Turn the jack screws with the hex wrench to

raise the knife so it barely touches the jig.

Perform this adjustment on both ends.

When rotating cutters, the dot on each cutter

is used as a reference point when determining

which cutter edges are used, or dull, and which

are sharp. Be sure to always rotate the cutters in

the same direction (see Figure 10). Otherwise,

the dot will not be an effective reference for deter-

mining which cutting surfaces are sharp.

6. Tighten the gib bolts on each side just

enough to keep the knife from moving—DO

NOT fully tighten at this time.

7. Repeat steps 2-6 on the other three knives,

then move on to step 8.

When replacing the carbide cutters, the dimen-

sions are 14mm x 14mm x 2mm, with a 6.5mm

bore and 30° relief angles (Model H2334 in the

current Grizzly Catalog).

8. Tighten the gib bolts, with medium pres-

sure, in this order: (1) The two center bolts

on each of the four knives, (2) the next two

bolts outward from the center of each knife,

and (3) the rest of the gib bolts in this man-

ner until all bolts on all four knives have been

tightened with medium pressure.

In addition, the spiral cutterhead planers are sup-

plied with an air wrench for loosening and tight-

ening the carbide cutter Torx^®screws. This tool

is very valuable if you have to rotate or change

many of the cutters at one time. T-20 Torx^®bits

are also included.

9. Now final tighten each of the bolts in the

same manner as step 8.Tightening the gib

bolts two at a time, each knife at a time, will

prevent distortion of the cutterhead from

over-torquing the gib bolts.

-24-

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5. Paying attention to the location of the refer-

ence dot, remove and replace/rotate one

cutter at a time, sparingly oil the threads of

the Torx^®screw with a light machine oil, and

tighten the screw with the air wrench.

Note—Torx^®screws that are difficult to

remove with the air wrench can be removed

with the supplied T-handle. Carefully insert

a Torx^®bit into the hole on the side of the

“cheater bar.” This should allow you enough

leverage to loosen the Torx^®screws.

Reference Dot

Figure 10. Always rotate carbide cutters in the

same direction to keep track of the dull or

damaged edges.

NOTICE

Always rotate each insert in the same direc-

tion. When an insert returns to the original

position, it is time for replacement.

To install/adjust the carbide cutters:

1. Disconnect the planer from the power

6. After all the carbide cutters that you adjusted

have been rotated/replaced, adjust the air

compressor air pressure to 82 PSI and make

sure the air wrench is still at the “2” setting

on the dial (this final torque setting will be

the equivalent of 48-50 INCH pounds).

source!

2. Open the top cover door to gain access to the

cutterhead, and open the left-hand service

door to gain access to the cutterhead pulley,

so you can safely rotate the cutterhead.

7. Now final tighten the Torx^®screws.

3. Prepare the air wrench (included with your

planer) by installing a T-20 Torx^®bit, con-

necting it to an air compressor regulated to

30 PSI, and setting the air wrench dial to the

“2” setting.

Note—This low pressure (torque) setting will

reduce the chance of cross threading the

Torx^®screw threads as well as correctly pre-

torque the screws before final tightening.

4. Clean out sawdust from the heads of the

Torx^®screws that you will loosen.

NOTICE

Remove sawdust from the heads of the

Torx^®screws before attempting to remove

them from the cutterhead. The head of the

Torx^®screws could become stripped if this

is not done.

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3. Set the Rotacator^®dial to .000". Place the

Rotacator^®under the cutterhead on one end.

Turn the cutterhead so the plunger on the

Rotacator^®will contact the cutterhead body

as shown in Figure 12. Raise the table up

enough for the cutterhead to get a reading

on the dial.

Table

The table movement is critical to the operation of

the Extreme Duty Planers. For the feed rollers to

work correctly, the table must be parallel with the

cutterhead.

We strongly suggest using a Rotacator^®for mak-

ing adjustments to your planer. This tool is well

worth the money, because it provides accuracy

within .001". Check with the current Grizzly cata-

log for details.

Point of

contact

As an alternative to using a Rotacator^®, construct

a block of scrap wood to aid in checking the table.

The wood block should be rectangular and should

have one side that sits flat on the table. Make

the block tall enough to leave adequate working

room between the table and the cutterhead, but

thin enough to fit between the chip deflector and

pressure bar.

Figure 12. Rotacator measuring cutterhead/

table for being parallel to each other.

To check the table with a Rotacator^®:

1. Make sure the planer is unplugged!

4. Move the Rotacator^®back and forth to find

bottom dead center on the cutterhead. (You

will reach bottom dead center when you

have the highest reading on the Rotacator^®

2. Models G9740Z and G9967Z skip this step.

For Models G9740/G9967/G9741/G9961,

open the left side service door. Locate the

cutterhead lock shown in Figure 11. Rotate

the pulley and drop (pull up and twist)

the cutterhead lock into the THREADED

HOLE in the pulley (this should position the

cutterhead so the knives are out of the way

for table adjustments).

5. Now raise the table up so the Rotacator^®

reads exactly .050", and set the dial to

.000".

6. Move the Rotacator^®to the other side of the

cutterhead and find bottom dead center. If

the difference in either direction of the dial

is more than .004", then the table should be

adjusted.

Cutterhead

Lock

Figure 11. Engaging cutterhead lock.

-26-

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To check the table with the block of wood:

To adjust the table with the Rotacator^®:

1. Make sure the planer is disconnected

from the power source!

1. Make sure the planer is disconnected

from the power source!

2. Models G9740Z and G9967Z skip this step.

For Models G9740 and G9967, open the

left side service door. Locate the cutterhead

lock shown in Figure 11. Pull up and twist

so the end of the lock will drop. Rotate the

pulley to line up the cutterhead lock with the

THREADED HOLE in the pulley (this should

position the cutterhead so the knives are out

of the way for table adjustments).

2. Set the Rotacator^®dial to .000". Place the

Rotacator^®under the cutterhead on the right-

hand side (facing front).

3. Turn the cutterhead so the plunger on the

Rotacator^®contacts the cutterhead body.

Raise the table up enough for the cutterhead

to get a reading on the dial.

4. Move the Rotacator^®back and forth to find

bottom dead center on the cutterhead. (You

will reach bottom dead center when you have

the highest reading on the Rotacator^®.)

3. Place the block of wood on the table, under-

neath the cutterhead. Position the block on

the left side (point “A” in Figure 13) of the

cutterhead.

5. Adjust the table height to make the dial on

the Rotacator^®read .050", then set the dial

to .000". Move the Rotacator^®over to the far

left end of the cutterhead and find bottom

dead center.

6. Locate the two columns underneath the

table. These are covered in flexible rubber

sleeves. Underneath the sleeves are adjust-

ment flanges that allow you to disengage the

table columns from the lifting gears.

CUTTERHEAD

TABLE

To adjust the table, you need to disen-

gage the opposite side from that which

needs to be adjusted.

Figure 13. Measure table-to-cutterhead at both

7. Pull the rubber sleeve down on the deter-

mined column to expose the table adjust-

ment flange shown in Figure 14. You may

need to cut the plastic cable tie in order to

remove the sleeve.

points “A” and “B.”

4. Raise the table up until the top of the block

lightly contacts the bottom of the knife or

indexable insert, depending on your model.

5. Without moving the table position, slide the

block over to the other side (point “B” in

Figure 13).

6. If the block will not fit under the cutterhead

or if the gap between the block and the

cutterhead exceeds .004" (use a feeler

gauge to measure this), the table must be

adjusted.

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4. Locate the two columns underneath the

table. These are covered in flexible rubber

sleeves. Underneath the sleeves are adjust-

ment flanges that allow you to disengage the

table columns from the lifting gears.

To adjust the table, you need to disen-

gage the opposite side that needs to be

adjusted.

5. Pull the rubber sleeve down on the deter-

mined column to expose the table adjust-

ment flange shown in Figure 14. You may

need to cut the plastic cable tie in order to

remove the sleeve.

Figure 14. Column adjustment flange

underneath table.

6. Loosen the two nuts that secure the table

adjustment flange; this will allow the opposite

side of the table to be moved up or down.

8. Loosen the two nuts that secure the table

adjustment flange; this will allow the opposite

side of the table to be moved up or down.

7. Turn the fine adjustment knob to raise the

side of the table with the wood block, so the

wood block barely touches the cutterhead.

9. Turn the fine adjustment knob to raise the

side of the table with the Rotacator^®to

make the dial read .050" on the Rotacator

dial. Double check the table-to-cutterhead

measurement on the right end to make sure

it did not move. Adjust as necessary. The

Rotacator^®will allow you to easily get each

end within ±.001" of each other.

8. Slide the wood block over to the other side

to check for consistency. Adjust the table as

necessary until each side is even with each

other. Use a feeler gauge to check the toler-

ances.

10. When each end is adjusted properly, tighten

all of the nuts at the table mount and clamp.

Double check the table-to-cutterhead mea-

surement to make sure the table did not

move.

9. Tighten the two nuts that secure the table

adjustment flange. Double check the table-

to-cutterhead measurement to make sure

the table did not move.

10. Pull the rubber sleeve back up to its original

position. Be sure to secure it with a new

plastic cable tie if you cut the old one. The

rubber sleeves must cover the lifting column

to keep fine sawdust from building up in the

gear grease.

To adjust the table with the wood block:

1. Make sure the planer is disconnected

from the power source!

2. Place the wood block on the side of the table

where the tightest gap exists between the

table and the cutterhead.

11. Set the table rollers as necessary.

3. Raise the table so the cutterhead barely

touches the wood block. Slide the wood

block to the other side of the table, under the

other end of the cutterhead.

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5. Open the cover. Remove the nut and spring

on the tension stud. Rotate the pressure bar

up so it covers the cutterhead.

Feed Rollers &

Pressure Bar

6. Open the left cabinet door. Loosen the

check nuts shown in Figure 16, and turn

the adjustment bolts to raise each block up

The feed rollers are factory set at .040" below the

knife edge at bottom dead center. Adjusting them

can be a difficult process and is not recommend-

ed when the machine is new, unless the adjust-

ments are necessary for a specific application. If

you are not getting satisfactory performance from

the feed rollers, adjustments are necessary.

approximately ⁄2" (enough to be above the

horizontal plane of bottom dead center of the

cutterhead knife/insert).

Roller Blocks

Although not required, we recommend using a

Rotacator^®for the following setup. Check with the

current Grizzly catalog for details.

To set the feed rollers and pressure bar with

hardwood blocks:

Check Nuts

1. Make sure the machine is disconnected

from power and the knives have been

adjusted properly!

Adjustment Bolts

2. Obtain a milled piece of hardwood that is

within .002" from one side to another. Rip

this piece down the middle. (Two separate

boards may also be used if they are within

.002" of each other in thickness.)

Figure 16. Left side roller controls.

7. Open the right cabinet door. Loosen the

check nuts shown in Figure 17, and turn the

adjustment bolt and setscrew to raise each

block the same amount as those from the

previous step.

3. Lower the table rollers below the surface of

the table and lock the cutterhead in place.

4. Place the boards on each side of the table

as shown in Figure 15, so each board spans

from the front of the table to the back.

Roller Blocks

Hardwood Blocks

Check Nuts

Setscrew

Adjustment Bolt

Figure 15. Board position on table.

Figure 17. Right side roller controls.

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8. Working from the back of the planer is easi-

est because the anti-kickback pawls hang

down in the front. Place a piece of newspa-

per on each wood block so it is both under

the cutterhead and accessible from the back

of the planer. The newspaper will act as a

feeler gauge to help you know when the

table is high enough. (Newspaper is about

.003" thick and is long enough for adequate

access.)

To set the feed rollers and pressure bar with

a Rotacator^®:

1. Make sure the planer is disconnected

from power and the knives are adjusted

properly.

2. Read the previous instructions about setting

the feed rollers and pressure bar with wood

blocks—this will familiarize you with how to

access and adjust the feed rollers and pres-

sure bar.

9. Raise the table close to the knife/insert edge.

Continue raising the table with the micro

adjust knob while constantly checking for

resistance on the newspaper. When you get

a medium drag on the paper, stop raising the

table and remove the newspaper.

3. Engage the cutterhead lock.

4. Place the Rotacator^®on the table, under-

neath the cutterhead. Line up the Rotacator^®

plunger on the edge of the knife. Set the dial

to .000" and lock in place.

This table position will now be your reference

point from which to make the other adjust-

ments.

5. Move the Rotacator^®directly under the one

side of the feed roller and set the plunger on

a bottom dead center edge. Adjust the feed

roller until the Rotacator^®reads .040".

10. Lower the feed rollers so they rest on the

wood blocks. Back the adjustment bolts out

another ¹⁄8" (approximately).

6. Repeat step 4 on each end of each feed

roller. Double check for accuracy, then lock

the check nuts in place.

11. Notice where the hairline indicator reads on

the table height scale. With the micro-adjust-

ment knob, lower the table approximately

1mm on the scale (1mm = .039").

7. Adjust the pressure bar using the same pro-

cedure as with the feed rollers.

12. On the right and left sides, raise the adjust-

ment bolts up to the roller blocks and tighten

the check nuts. Make sure the adjustment

bolts do not move while tightening the check

nuts.

13. Rotate the pressure bar down to its original

position. On the pressure bar, back the stop

bolts out enough so that the pressure bar

rests on the wood blocks below.

14. Set the stop bolts so they barely touch the

planer body and tighten the check nuts to

keep them in place.

15. Replace the springs and nuts. Tighten the

nuts down on the tension stud so that the top

of the nut is approximately ¹⁄4" from the top of

the tension stud.

-30-

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Feed Roller Tension

Chip Deflector

The segmented chip breaker is factory set for

height, so the only adjustment that can be per-

formed is to the spring pressure.

The feed roller spring tension is factory set and

should require no initial adjustments, unless

needed for a special type of stock. If a situation

develops where the workpiece does not feed

straight, adjustments to one roller may be neces-

sary. Usually if the board is moving to one side,

that side needs more pressure.

To adjust the pressure on the chip breaker

segments:

1. Make sure the planer is disconnected

from the power source!

Open the left cabinet door and locate the spring

above the feed block (directly above the adjust-

ment bolt from the previous instructions). Turn

the nut counter-clockwise to increase the spring

tension.

2. Rotate the knurled adjustment rings shown

in Figure 18 either left or right to increase or

decrease the spring tension.

In general, rough stock or deeper cuts require

more feed rate pressure (more spring tension).

Shallow cuts need less feed rate pressure. Too

much pressure increases snipe. Find a balance

that is right for your application.

Knurled Adjustment Rings

Figure 18. Chip deflector spring pressure controls.

Extreme Duty Planers

-31-

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SECTION 10: CLOSURE

We recommend you keep a copy of our cur-

The following pages contain general machine

data, parts diagrams/lists, troubleshooting guide

andWarranty/Return information for your Extreme

Duty Planer.

rent catalog for complete information regarding

Grizzly's warranty and return policy. If you need

additional technical information relating to this

machine, or if you need general assistance or

replacement parts, please contact the Service

Department listed in the Introduction section.

If you need parts or help in assembling your

machine, or if you need operational informa-

tion, we encourage you to call our Service

Department. Our trained service technicians will

be glad to help you.

Additional information sources are necessary to

realize the full potential of this machine. Trade

journals, woodworking magazines and your local

library are good places to start.

If you have comments dealing specifically with

this manual, please write to our Bellingham,

Washington location using the address in the

General Information section. The specifica-

tions, drawings, and photographs illustrated in

this manual represent the Extreme Duty Planer

as supplied when the manual was prepared.

However, due to Grizzly’s policy of continuous

improvement, changes may be made at any time

with no obligation on the part of Grizzly. Whenever

possible, though, we send manual updates to all

owners of a particular tool or machine. Should

you receive one, add the new information to this

manual and keep it for reference.

Operating this equipment has the potential

for flying debris to cause eye injury. Always

wear safety glasses or goggles when oper-

ating equipment. Everyday glasses or read-

ing glasses only have impact resistant

lenses, they are not safety glasses. Be

certain the safety glasses you wear meet

the appropriate standards of the American

National Standards Institute (ANSI).

We have included some important safety mea-

sures that are essential to this machine’s opera-

tion. While most safety measures are generally

universal, Grizzly reminds you that each work-

shop is different and safety rules should be con-

sidered as they apply to your specific situation.

Like all power tools, there is danger associ-

ated with the Extreme Duty Planer. Accidents

are frequently caused by lack of familiarity

or failure to pay attention. Use this tool with

respect and caution to lessen the possibility

of operator injury. If normal safety precau-

tions are overlooked or ignored, serious per-

sonal injury may occur.

The Extreme Duty Planer was specifically

designed for wood shaping operations only.

DONOTMODIFYAND/ORUSETHISMACHINE

FOR ANY OTHER PURPOSE. Modifications

or improper use of this tool will void the war-

ranty. If you are confused about any aspect

of this machine, DO NOT use it until all your

questions have been answered, or serious

personal injury may occur.

-32-

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MACHINE DATA

SHEET

Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901

MODEL G9740/G9740Z

20" EXTREME-DUTY PLANER

Design Type .................................................................................................... Floor Model

Overall Dimensions:

Table Size ....................................................................................................24" x 35¹⁄2

Overall Depth ...........................................................................................................36"

Overall Width.........................................................................................................42³⁄8

Shipping Weight.............................................................................................. 1788 lbs

Net Weight ...................................................................................................... 1600 lbs

Crate Size ............................................................................ 46⁵⁄8" L x 40" W x 45¹⁄2" H

Footprint .............................................................................................. 40¹⁄2" W x 30" D

Capacities:

Maximum Depth of Cut ............................................................................................⁵⁄16"

Maximum Width of Cut....................................................................................................20"

Maximum Cutting Height............................................................................................9"

Minimum Stock Thickness .......................................................................................¹⁄4

Minimum Stock Length.............................................................................................10"

Cutterhead Diameter...............................................................................................4⁵⁄8

Cutterhead Speed........................................................................................5000 RPM

Cuts per Minute.................................................................................................. 20,000

Feed Rate ................................................................................................ 20 - 40 FPM

Cuts Per Inch ...............................................................................................41.6 - 83.3

Construction:

Table ................................................................................. Precision-Ground Cast Iron

Power Feed Rollers..................................Steel, Segmented Infeed, Polished Outfeed

Cutterhead (G9740) ...................................4 Knife, High Speed Steel, 20" x 1¹⁄8" x ¹⁄8

Cutterhead (G9740Z).............................................Spiral w/Indexable Carbide Inserts

Motors:

Cutterhead Motor.............................. 7¹⁄2 HP, Three-Phase ⁄ 220/440V

Amps .................................................................................................................... 20/10

Feed Motor............................................................................................................1 HP

Amps .................................................................................................................. 3.7/1.9

Table Lift Motor .................................................................................................... ¹⁄2 HP

Amps .................................................................................................................. 1.8/0.9

Cutterhead Power Transfer........................................................................... Belt Drive

Motor Bearings.................................................... Shielded & Lubricated Ball Bearings

Features:

........................................................................................................Table Height Scale

.................................................................................Micro Adjustment of Table Height

.............................................................................................. Segmented Chip Breaker

........................................................................................................Variable Feed Rate

...................................................................................................................5" Dust Port

.............................................................................................Convenient Control Panel

Specifications, while deemed accurate, are not guaranteed.

Extreme Duty Planers

-33-

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MACHINE DATA

SHEET

Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901

MODEL G9967/G9967Z

20" EXTREME DUTY PLANER

Design Type .................................................................................................... Floor Model

Overall Dimensions:

Table Size ....................................................................................................24" x 35¹⁄2

Overall Depth ...........................................................................................................36"

Overall Width.........................................................................................................42³⁄8

Shipping Weight.............................................................................................. 1807 lbs