McCulloch Trimmer 28cc User Manual

28cc and 32cc  
GAS POWERED CURVED SHAFT  
STRING TRIMMERS  
(†)SERIAL  
NUMBER  
PREFIX  
MODEL  
NAME  
MODEL ENGINE  
NUMBER  
SIZE DRIVE SHAFT HANDLE  
MT3310  
-
-
-
-
28cc DIRECT 44”  
32cc CLUTCH 48”  
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
J
MT3311  
MAC 1385L  
MAC 2816  
22-  
400132-93 32cc CLUTCH 48”  
12- / 22- 400128-01 28cc DIRECT 44”  
12- / 22- 400128-19 28cc DIRECT 44”  
12- / 22- 400128-21 28cc DIRECT 44”  
12- / 22- 400128-27 28cc DIRECT 44”  
12- / 22- 400128-51 28cc DIRECT 44”  
12- / 22- 400128-73 28cc DIRECT 44”  
MAC 2816  
MAC 2816  
MAC 2816  
MAC 2816  
MAC 2816  
MAC 2816  
12-  
12- / 22- 400128-93 28cc DIRECT 44”  
22- 400128-97 28cc DIRECT 44”  
400128-85 28cc DIRECT 44”  
MAC 2816  
MAC 2816  
MAC 2818  
12- / 22- 400128-02 28cc CLUTCH 48”  
12- / 22- 400128-30 28cc CLUTCH 48”  
12- / 22- 400128-58 28cc CLUTCH 48”  
12- / 22- 400128-94 28cc CLUTCH 48’  
MAC 2818  
McCulloch products are identified by a model number (in this instance  
400128) followed by a suffix number (01). Suffix numbers denote  
variations in parts or assemblies used in the manufacture of this  
product.  
Illustrated Parts Lists (IPLs) contain a PART NUMBER, DESCRIPTION,  
UNITS per assembly and STOCKING CODE for each part.  
Stocking Codes are:  
MAC 2818  
MAC 2818  
Eager Beaver 282  
Eager Beaver 282  
Eager Beaver 287  
Eager Beaver 287  
Eager Beaver 287  
Eager Beaver 287  
ProMac I Super  
ProMac I Super  
PowerPro P1528  
12-  
12-  
12-  
12  
400128-05 28cc DIRECT 44”  
400128-47 28cc DIRECT 44”  
400128-10 28cc CLUTCH 48”  
400128-28  
28c CLUTCH 48”  
12-  
12-  
400128-48 28cc CLUTCH 48”  
400128-52 28cc CLUTCH 48”  
A - Dealer stocked. Fast to medium moving part.  
B - Distributor stocked. Medium to slow moving part.  
C - Factory stocked. Slow moving part.  
D
J
12- / 22- 400132-01 32cc DIRECT 48”  
12-  
22-  
400132-44 32cc DIRECT 48”  
400128-96 28cc DIRECT 44”  
400132-86 32cc CLUTCH 44”  
D
D
D
J
PowerPro P1732C 22-  
NOTE:  
(-)  
The following explains symbols and footnotes in this IPL:  
Roadrunner III  
Roadrunner III  
Roadrunner III  
Roadrunner III  
Roadrunner III  
Roadrunner III  
Silver Eagle 28  
12- / 22- 400128-11 28cc DIRECT 44”  
12- / 22- 400128-18 28cc CLUTCH 44”  
A dash preceding a PART NUMBER indicates that it is a  
new part number, different from the one listed in the  
previous IPL for this unit.  
J
12-  
12-  
400128-25 28cc DIRECT 44”  
400128-59 28cc DIRECT 44”  
J
D
J
One or more dots (. Spring, Starter) preceding a part  
DESCRIPTION indicates the part is included in the kit or  
assembly described directly above the dot(s).  
(.)  
12- / 22- 400128-61 28cc DIRECT 48”  
12- 400128-83 28cc CLUTCH 44”  
12- / 22- 400128-03 28cc DIRECT 44”  
D
D
J
If four dashes appear in place of a PART NUMBER, the  
part is not available individually but is included in the next  
higher assembly or subassembly.  
Silver Eagle 28C 12- / 22- 400128-06 28cc CLUTCH 48”  
Silver Eagle 28 12- / 22- 400128-17 28cc DIRECT 44”  
Silver Eagle 28C 12- / 22- 400128-20 28cc CLUTCH 48”  
(-- --)  
D
J
Silver Eagle 28  
Silver Eagle 28C  
Silver Eagle 28C  
Silver Eagle 28  
FR 15” DD 44”  
FR 15” DD 44”  
FR 17” CD 48”  
FR 17” CD 48”  
12-  
12-  
12-  
12-  
90-  
90-  
90-  
90-  
400128-49 28cc DIRECT 44”  
400128-50 28cc DIRECT 48”  
400128-74 28cc CLUTCH 48”  
400128-75 28cc DIRECT 44”  
002815-00 28cc DIRECT 44”  
002816-00 28cc DIRECT 44”  
002817-00 28cc CLUTCH 48”  
002818-00 28cc CLUTCH 48”  
D
J
Circled numbers preceding a DESCRIPTION footnote the  
part or assembly to additional information on the page.  
J
An asterisk denotes that choices follow or precede.  
(*)  
D
D
D
D
D
Serial Number Prefix 22- denotes CARB approved unit --  
all parts are interchangeable with Serial Number  
Prefix 12-.  
(†)  
The policy of McCulloch is one of continual improvement in design,  
manufacturing and engineering advancement wherever possible to  
assure still finer power tools. Hence, specifications, equipment colors,  
design and manufacturer’s suggested list prices are subject to change  
without notice. McCulloch reserves the right to make such changes  
without prior notification or obligation to backfit or supply backfit  
components for units previously shipped from the factory.  
MARCH 2003  
ILLUSTRATED PARTS LIST  
P.O. Box 31567  
Tucson, Arizona 85751-1567 • U.S.A.  
McCulloch 2003 • Printed in U.S.A.  
PN 211703-03  
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POWERHEAD ASSEMBLY  
ITEM STK PART  
FIGURE 1  
UNITS  
PER ASY  
ITEM STK PART  
NO. CODE NUMBER  
UNITS  
NO. CODE NUMBER  
DESCRIPTION  
DESCRIPTION  
PER ASY  
1
2
3
4
5
6
7
8
9
A
B
B
A
A
A
A
A
A
A
A
A
A
A
A
A
-
A
A
A
B
A
A
A
A
A
A
A
A
C
B
A
B
-
224044  
-224034  
111072  
224228  
224922  
-302424  
224040  
322032  
111055  
224236  
224237  
224239  
111058  
224238  
224242-02  
225163  
FIGURE 3  
218933  
-224041-02  
111053  
111057  
322031  
302349  
-216985  
225162  
225163  
-223508  
322105  
301114  
322847  
322844  
-301352-01  
550001  
-- --  
Spring, Muffler  
Kit, Muffler  
. Screw, 8-18 x .31 Pn Dh Sl Torx 1  
1
1
52  
*53  
54  
55  
56  
*53  
54  
55  
56  
57  
58  
*59  
60  
*59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
69  
70  
71  
72  
-
-
-
-
-
-
-
-
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
. Bearing  
2
1
1
1
1
1
1
1
1
4
1
1
1
1
1
1
1
2
1
1
1
1
1
1
5
1
Piston, 28cc Aluminum  
. Pin, Cshaft Piston  
. Ring, Retaining  
. Ring, Piston, 35mm  
Piston, 32cc Aluminum  
. Pin, Cshaft Piston  
. Ring, Retaining  
. Ring, Piston  
Screw, 10-24 x .688 Tri Rnd  
Shield Muffler  
Cylinder/Gasket, 28cc Chrome  
. Gasket, Cylinder  
Cylinder/Gasket, 32cc Chrome  
. Gasket, Cylinder  
Cover, Cylinder/Muffler (Black)  
Washer, Plastic  
Screw, 10-24 x .63 Sl Torx Tp  
Screw, 10-14 x 1.38 Taptite  
Washer, .469OD/.222ID  
Spark Plug, RDJ8J  
Gasket, Muffler  
1
1
1
1
1
2
1
1
1
2
1
1
1
1
1
1
2
2
1
1
1
1
1
1
4
1
1
1
1
1
2
2
2
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Gasket, Exhaust Port  
Kit, Spark Arrester  
. Screen, Spark Arrester  
. Cover, Spark Arrester  
Screw, 10-24 x .625, Plast  
Cover, Air Cleaner, Large (Black)  
Cover, Air Cleaner, Small (Black)  
Filter, Air  
-
-- --  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
*50  
A
A
A
A
A
A
B
B
B
B
A
A
A
A
C
A
-
111065  
322030  
300452  
224022  
300453  
224022  
224235  
322210  
111067  
111068  
93469  
92879  
224023  
-224024-01  
-322437-90  
111065  
-- --  
Nut, 10-24 Hex, Flange  
Box, Air (Blk)  
Primer, Remote  
Hose, Fuel Return  
Carburetor w/Choke  
Gasket, Carburetor  
Insulator, Carburetor  
Screw, 10-24 x .88 Thd Form  
Screw, 10-24 Spl  
Gasket, Manifold  
Tank, Fuel (Natural)  
. Filter, Fuel  
Gasket, Ccase  
Plug, Ccase  
Plate, Ccase, Coated Finish  
Screw, 10-24 x .688 Tri Rnd  
Label, Choke (Vertical)  
Label, Staring Inst (Eng) for  
models with slide to stop switch 1  
Starter/Clutch Housing Asy 1  
. Hose, Fuel  
. Hose, Fuel Return  
. Cap, Fuel, w/Retainer  
Isolator, Fuel Tank  
Kit, Spacer, Clutch  
. Nut, Hex, 7/16-20  
. Washer, Shaft  
Kit, Flywheel, 28/32  
Kit, Pawls/Flywheel  
. Pawl, Starter  
. Spring, Starter Pawl  
. Ring, Retainer  
. Nut, Direct Drive  
. Nut, 7/16-20, Clutch Drive  
Key, Flywheel  
Screw, 10-24 x .88 Thd Form  
Terminal Tab  
Ignition Asy  
. Kit, Spark Plug Wire  
.. Connector, Spark  
.. Boot, Spark Plug  
.. Grommet, H/T Lead, Split  
.. Grommet, S/Plug Wire  
Screw, 10-24x.63 SlTorTp  
Shroud, Engine  
Short Block Asy, Direct Drive  
. Ccase Asy  
. Ccase, Machined  
.. Bearing 6202  
.. Bearing 6202RS  
.. Seal  
.. Spacer  
.. O-ring  
Short Block Asy, Clutch Drive  
. Cshaft Asy  
. Ccase, Machined  
.. Bearing 6202  
.. Bearing 6202RS  
.. Seal  
-
-- --  
73  
-
FIGURE 2  
Direct Drive Models Only (refer to chart on page 1)  
Clutch Drive Models Only (refer to chart on page 1)  
28cc Models Only (refer to chart on page 1)  
32cc Models Only (refer to chart on page 1)  
Not Used On These Models  
-
-
-- --  
-- --  
B
C
A
A
B
A
A
A
A
B
B
B
B
B
-
-
-
-
-
-
-
B
-
-
111085  
322847  
102164  
111053  
300321  
302138  
223884  
102556  
95266  
215533-01  
110995  
111067  
224042  
224701  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-224703  
-- --  
-- --  
Represents a  
large black air  
box  
Represents a  
small black air  
box  
Represents a  
terminal tab  
MT3311  
MT3311  
MT3310  
22400128-02  
22400128-06  
12400128-10  
22400128-11  
22400128-18  
12400128-20  
12400128-25  
12400128-28  
12400128-30  
12400128-48  
12400128-49  
12400128-50  
12400128-52  
12400128-58  
12400128-59  
12400128-61  
12400128-74  
12400128-83  
22400128-94  
12400132-44  
22400132-86  
22400132-93  
90002818-00  
22400128-03  
22400128-06  
22400128-11  
22400128-17  
22400128-18  
12400128-20  
12400128-25  
12400128-49  
12400128-50  
22400128-58  
12400128-59  
12400128-61  
12400128-74  
12400128-75  
12400128-83  
12400132-01  
12400132-44  
22400132-93  
22400128-01  
22400128-02  
12400128-05  
12400128-10  
22400128-19  
12400128-21  
12400128-27  
12400128-28  
12400128-30  
12400128-47  
12400128-48  
22400128-51  
12400128-52  
12400128-58  
12400128-73  
12400128-85  
22400128-93  
22400128-94  
22400128-96  
22400128-97  
90002815-00  
90002815-25  
90002816-00  
90002817-00  
90002818-00  
*50  
-
-
-
-
-
-
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
Represents a  
large green  
air box  
.. Spacer  
.. O Ring  
Rod, Connecting Asy  
22400132-86  
51  
3
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FIGURE 2  
STARTER/CLUTCH HOUSING ASSEMBLY  
37  
8
40  
60  
61  
41  
42  
62  
10  
29  
7
64  
8
9
35  
3
40  
4
5
44  
32  
10  
6
38  
39  
45  
9
2
34  
11/18  
43  
––34  
––35  
––34––  
––36  
––15  
––16  
––17  
––2  
––3  
2––––4  
––5  
––37  
––38  
––39––  
27  
––39  
––40  
––18  
33–––41  
––42  
14–––19  
––20  
––21  
––22  
––23  
––24  
––6  
––43  
––44  
––45  
––46  
––21––  
16/63  
––25  
––26  
––27  
––11  
––12  
11–  
20  
54  
––49  
––50  
––49––  
––51  
––52  
––53––  
56  
55  
49  
22  
23  
––53  
––54  
13/15  
29  
28  
24  
48–––55  
––56  
––57  
––58  
––59  
50  
30  
31  
19  
51  
58  
26  
25  
21  
52  
32  
12  
53  
32  
57  
59  
1/17  
11  
4
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STARTER/CLUTCH HOUSING ASSEMBLY  
FIGURE 2  
ITEM STK PART  
UNITS  
ITEM STK PART  
UNITS  
NO. CODE NUMBER  
DESCRIPTION  
PER ASY  
NO. CODE NUMBER  
DESCRIPTION  
PER ASY  
Direct Drive Models Only (refer to chart on page 1)  
Clutch Drive Models Only (refer to chart on page 1)  
1
2
A
A
B
B
A
B
B
B
A
A
A
A
-
301133  
300064  
111069  
105497  
224246  
224245  
224914  
224234  
111061  
300361  
- 300149-01  
- 300372-01  
-- --  
300782-61  
224912-61  
322140  
301133  
300372-01  
300361  
224234  
300064  
111069  
105497  
224246  
224245  
111061  
322234  
224919  
111070  
- 302106  
300459  
111054  
224917-61  
224247-61  
-- --  
301135  
322234  
300475  
9299-330301  
323131  
218941  
216792  
322362  
223357  
322027  
224916-61  
224240-61  
-- --  
301134  
300475  
300872  
323131  
218941  
216792  
224927  
215533-01  
223357  
222914  
222913  
222926  
322140  
Wire Asy, Switch  
1
1
1
1
1
1
1
Cover, Asy, Switch  
3
. Screw, 8-16 x .375 Plastite  
. Washer, Flat, .180 ID max  
. Contact, Switch  
. Button, Stop Switch  
Cover, Switch Housing  
Trigger Hsg Asy, 22mm, 28/32  
Screw, 6-19 x .62 Fl Hd Plastite  
Trigger, Throttle  
Throttle Cable, Direct Drive  
Throttle Cable, Clutch Drive  
. Nut, Speed, .188 ID  
Represents  
Represents  
Represents  
Represents DD/  
moment. switch  
MT3310  
4
grey asy/DD  
black asy/DD  
22400128-96  
grey asy/CD  
5
22400128-03  
12400128-17  
12400128-49  
12400128-75  
22400128-06  
12400128-20  
12400128-50  
12400128-74  
6
22400128-01  
22400128-03  
12400128-05  
22400128-11  
12400128-17  
22400128-18  
12400128-19  
22400128-21  
12400128-25  
12400128-27  
12400128-44  
12400128-49  
12400128-47  
22400128-51  
12400128-59  
12400128-61  
12400128-83  
22400128-73  
12400128-75  
12400128-85  
22400128-93  
22400132-01  
7
Represents  
8
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
4
1
1
1
4
1
yellow asy/CD  
22400128-02  
12400128-10  
22400128-18  
22400128-30  
12400128-48  
12400128-52  
22400128-58  
12400128-83  
22400128-94  
12400132-01  
12400132-44  
90002817-00  
90002818-00  
9
Represents  
yellow asy/DD  
MT3310  
Represents  
10  
*11  
*11  
12  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
*33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
*48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
black asy/CD  
MT3311  
22400128-01  
12400128-05  
12400128-11  
12400128-19  
22400128-21  
12400128-25  
12400128-27  
12400128-47  
22400128-51  
12400132-59  
12400132-61  
22400128-73  
12400128-85  
22400128-93  
22400132-86  
22400132-93  
B
A
B
A
A
A
B
A
B
B
A
B
A
A
A
A
A
A
A
B
-
Housing Asy, Clutch, 7/8 in.(Black)  
. Housing, Clutch 7/8 (Black)  
. Grip  
Represents DD/  
On/Off switch  
22400128-11  
12400128-25  
12400128-49  
12400128-59  
12400128-61  
. Wire Asy, Switch  
. Cable Asy, Throttle  
. Trigger, Throttle  
. Triggger Hsg Asy, 22mm (28/32)  
. Cover Asy, Switch  
.. Screw, 8-16 x .375 Plastite  
.. Washer, Flat, .180 ID max  
.. Contact, Switch  
. Button, Stop Switch  
. Screw, 6-19x.62 Fl Hd Plast  
. Sleeve, Protecting  
Screw, 10-14 x 1.0 Pn Hd  
Screw, 12-11 x .5 Pn Hd Torx  
Drum, Clutch, Heat Treated  
Kit, Clutch  
Screw, 10-24 x .625  
Starter Asy (Black) Direct Drive  
. Housing/Eyelet, Starter DD (Black) 1  
-
. Rope Guide  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
B
A
A
A
A
B
A
B
A
B
B
B
-
. Wire Asy, Switch  
. Sleeve, Protecting  
. Spring, Starter Rewind  
. New Direct Drive Drum/Rope Asy  
.. Rope, Starter, 46 in.  
. Washer, Nylon  
. Handle Starter  
. Pulley, Retained, Direct Drive  
. Screw, 8-16 Plastite  
. Screw, Spring Retainer  
Starter Asy Clutch Drive (Black)  
. Housing, Starter Cl Dr (Black)  
.. Rope Guide  
A
A
A
A
B
A
B
B
A
B
B
B
B
. Wire Asy, Starter Hsg, Clutch Dr  
. Spring Asy, Package  
. Drum/Rope Asy  
.. Rope, Starter, 46 in.  
. Washer, Nylon  
. Handle, Starter  
. Plate, Baffle, Clutch Drive  
. Grommet, H/T Lead  
. Screw, 8-16 Plastite  
Button, Stop  
Spring, Stop Button  
Wire Asy, Switch  
Grip  
5
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SHAFT / HANDLE / STRINGHEAD ASSEMBLY  
FIGURE 3  
––2  
––3  
––4  
1––  
––5  
2
11  
––13  
––14  
––15  
5
12–  
18  
––16  
3
9
19  
––17  
––1  
10  
17–  
––19  
4
––20  
17  
––24  
––25  
––26  
––22  
––23––  
32  
24  
22–  
31  
19  
20  
22  
13  
23  
14  
16  
15  
ITEM STK PART  
NO. CODE NUMBER  
UNITS  
PER ASY  
ITEM STK PART  
NO. CODE NUMBER  
UNITS  
PER ASY  
DESCRIPTION  
DESCRIPTION  
44” Shaft Models Only (refer to chart on page 1)  
48” Shaft Models Only (refer to chart on page 1)  
1
2
3
4
5
B
-
-
300834  
-- --  
-- --  
Handle, Delta Kit  
. Assist Handle w/Cap Asy  
. Knob  
. Bolt, 1/4 in.-20 x 2.5 Hx Cap  
. Nut, 1/4 in.-20 x .226T  
Clamp, Handle  
1
1
1
1
1
2
2
2
1
1
1
1
1
1
2
1
2
1
1
1
1
1
2
2
1
1
Represents a  
delta handle  
MT3310  
12400128-52  
22400128-58  
2400132-59  
22400128-73  
12400128-75  
12400128-83  
12400128-85  
22400128-93  
22400128-94  
22400128-96  
12300128-97  
22400132-01  
12400132-44  
22400132-86  
22400132-94  
90002815-00  
90002816-00  
90002817-00  
90002818-00  
B
B
B
A
A
A
A
A
A
A
A
-
A
-
A
A
A
A
-
9075-99  
13035-99  
215337  
217935  
218315  
300651  
322025  
-324089  
300688  
-300736-01  
300429  
-- --  
300424  
-- --  
-301023  
301024  
224062  
300626  
-- --  
9
MT3311  
Represents a  
J-handle  
10  
11  
12  
13  
14  
15  
16  
*17  
18  
*17  
18  
*19  
*19  
20  
21  
22  
23  
24  
31  
32  
Screw  
Nut, 10-24  
22400128-01  
22400128-02  
22400128-03  
22400128-05  
22400128-10  
22400128-17  
22400128-19  
22400128-21  
22400128-27  
12400128-30  
12400128-47  
12400128-49  
22400128-51  
22400128-06  
22400128-11  
22400128-18  
22400128-20  
12400128-25  
22400128-48  
12400128-50  
22400128-61  
Kit, Stringhead, Small  
. Housing/Eyelet Asy w/Collar  
. Spring, McC Stringhead  
. Kit, Line on Spool, M-Sm  
. Kit, Knob Asy, Small  
Housing Asy, Outer, 44”  
. Clip, Spring External  
Housing Asy, Outer, 48”  
. Clip, Spring External  
Shaft, Flex, Plus Clip, 44”  
Shaft, Flex, Plus Clip, 48”  
Shield Asy, Grass, R, 17in.  
. Kit, Knife  
12400128-49  
12400128-50  
.. Cutter  
-
-
A
A
-- --  
-- --  
216595  
111102  
.. Nut, Lock 10-24 Hex  
.. Screw, 10-24 x .50 Torx  
Screw, M6 x 1.0 Hex  
Nut, Wing M6 x 1.0  
6
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CARBURETOR ASSEMBLY  
20  
FIGURE 4  
21  
5
5
22  
22  
16  
17  
21  
14  
15  
19  
7
32  
3
6
17  
27  
2
7
8
30  
3
34  
18  
2
6
8
25  
9
25  
24  
14  
31  
19  
1
13  
36  
28  
34  
20  
30  
11  
10  
9
38  
23  
12  
35  
24  
33  
12  
10  
26  
24  
26  
32  
28  
29  
36  
31  
15  
27  
37  
19  
35  
33  
18  
4
13  
29  
1
11  
16  
4
23  
22  
ITEM STK PART  
NO. CODE NUMBER  
UNITS  
PER ASY  
ITEM STK PART  
NO. CODE NUMBER  
UNITS  
PER ASY  
DESCRIPTION  
DESCRIPTION  
A
- 323602-03  
-- --  
-- --  
-- --  
-- --  
300072  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
Carburetor, Walbro WT 434  
. Ring, Screen Retainer  
. Ring, Shaft Retainer  
. Lever, Throttle  
. Cover, Metering Lever  
. Cover, Fuel Pump  
. Shaft Asy, Throttle  
. Valve, Throttle  
. Shaft Asy, Choke  
1
A
- 323602-03  
-- --  
-- --  
-- --  
-- --  
300456  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
-- --  
Carburetor, Zama C1U M29D  
. Ring, Screen Retainer  
. Collar  
. Lever, Throttle  
. Cover, Metering Lever  
. Cover, Fuel Pump  
. Shaft Asy, Throttle  
. Valve, Throttle  
. Shaft Asy, Choke  
. Valve, Choke  
. Valve, Inlet Needle  
. Plug, Welch  
. Ball, Choke Friction  
. Gasket, Metering Diaphragm  
. Gasket, Fuel Pump  
. Diaphragm, Fuel Pump  
. Diaphragm Asy, Metering  
. Screw, Valve  
1
1
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
4
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
2
3
4
5
6
7
8
9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
B
B
. Valve, Choke  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
. Valve, Inlet Needle  
. Seat Asy, Check Valve  
. Plug, Cup  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
. Plug, Welch  
. Ball, Choke Friction  
. Gasket, Metering Diaphragm  
. Gasket, Fuel Pump  
. Diaphragm, Fuel Pump  
. Diaphragm Asy, Metering  
. Screw, Valve  
. Screw, Metering Lever Pin  
. Screw, Pump Cover  
. Spring, Idle Adjust Kit  
. Screw, Metering Cover  
. Spring, Choke Friction  
. Spring, Idle Needle  
. Spring, High Speed Needle  
. Spring, Throttle Return  
. Spring, Metering Lever  
. Needle, High Speed  
. Needle, Low Speed  
. Screen, Check Valve  
. Screen, Fuel Inlet  
. Screw, Valve  
. Screw, Metering Lever Pin  
. Screw, Pump Cover  
. Screw, Idle Adjust Kit  
. Screw, Metering Cover  
. Spring, Choke Friction  
. Spring Needle  
. Spring, Throttle Return  
. Spring, Metering Lever  
. Needle, High Speed  
. Needle, Low Speed  
. Screen, Check Valve  
. Screen, Fuel Inlet  
. Pin, Metering Lever  
. Lever, Metering  
. Nozzle Asy, Check Valve  
. Screw, Throttle Lever  
. Cap, Limiter, High, Black  
. Cap, Limiter, Low, White  
A
. Pin, Metering Lever  
. Lever, Metering  
. Ring, High Speed  
. Washer, High Speed  
. Cap, Limiter, High, Black  
. Cap, Limiter, Low, White  
-- --  
-- --  
-- --  
323601  
323602  
-- --  
323603  
323604  
B
B
B
B
300454  
Kit, Major Repair RB-48 (Stk Code B)  
Kit, Gasket/Diaphragm GND-13 (Stk Code A)  
Kit, Choke Lever 40-999 (Stk Code A)  
300457  
Kit, Major Repair A1117WT (Stk Code A)  
Kit, Gasket/Diaphragm B1106WT (Stk Code A)  
Kit, Choke Lever 40-999 (Stk Code A)  
300473  
322358  
324460  
322363  
7
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P.O. Box 31567 • Tucson Arizona 85751-1567 • U.S.A.  
• MANUFACTURING • SALES • SERVICE •  
FOR WARRANTY OR SERVICE,  
CONTACT THE NEAREST McCULLOCH AUTHORIZED SERVICE CENTER  
LISTED UNDER ‘SAWS’ IN YOUR TELEPHONE DIRECTORY YELLOW PAGES.  
IF FURTHER ASSISTANCE IS REQUIRED CALL THIS TOLL-FREE HOT LINE.  
PLEASE REFERENCE YOUR MODEL AND SERIAL NUMBER.  
1-800-521-8559  
MONDAY - FRIDAY - 6:00 AM - 4:30 PM (MST)  
ENGINE SPECIFICATIONS  
Engine Type . . . . . . . . . . . . . . . . .Air-Cooled, Two Cycle, Single  
Chrome Cylinder  
TORQUE SPECIFICATIONS  
FASTENER  
PART NO.  
111065  
FIG/ TORQUE  
DESCRIPTION  
ITEM (IN/LBS) LOCTITE  
CCase to Cylinder  
1 / 57 55 - 60  
1 / 70 35 - 40  
1 / 20 45 - 50  
1 / 48 55 - 60  
1 / 40 45 - 50  
1 / 13 25 - 30  
1 / 66 110 - 120  
242  
242  
242  
242  
242  
--  
Displacement . . . . . . . . . . . . . . . .28cc or 32cc  
Idle RPM, Direct Dr . . . . . . . . . . .3000 - 3500 RPM  
Idle RPM, Clutch Dr . . . . . . . . . . .2700 - 3000 RPM  
Maximum RPM . . . . . . . . . . . . . .7000 - 8000 RPM  
CCase to Plast Plug  
Insulator to Cylinder  
Shroud to CCase  
Ignition Asy  
111065  
111053  
111067  
111053  
111058  
92879  
Compression, PSI . . . . . . . . . . . .28cc = 80  
(after 10 pulls, thr’tl full open) . . .32cc = 90  
Carburetor  
Spark Plug  
--  
Ignition . . . . . . . . . . . . . . . . . . . .Electronic  
Flywheel Nut  
111085  
322847  
111054  
224919  
1 / 37 140 - 145 242  
1 / 38 140 - 145 242  
Flywheel to Ignition Gap . . . . . . . .0.007-0.012 in.  
Spark Plug . . . . . . . . . . . . . . . . . .Champion RDJ8J  
Spark Plug Gap . . . . . . . . . . . . . .0.025 in. (0.63mm)  
Fuel Tank Capacity . . . . . . . . . . . .24 oz. (71ml)  
Flywheel Nut  
Starter Housing  
Clutch Housing  
2 / 32 30 - 35  
2 / 28 30 - 35  
--  
--  
Fuel Type . . . . . . . . . . . . . . . . . . .Unleaded - Regular Grade  
Fuel to Oil Ratio . . . . . . . . . . . . . .40:1 McCulloch Custom Lubricant  
Dry Weight . . . . . . . . . . . . . . . . . .44” = 9.9 lbs  
48” = 13.6 lbs  
Carburetor . . . . . . . . . . . . . . . . . .Diaphragm with Primer  
Starter Cord . . . . . . . . . . . . . . . . .Nylon, Type 3.5, Length 46 in.  
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