Snapper Lawn Aerator 3901 User Manual

Attachment  
Illustrated  
Parts List  
Attachment  
Mfg. No. Description  
1694399 540 RPM P.T.O.  
MANUFACTURING, INC.  
500 N. Spring Street / PO Box 997  
Port Washington, WI 53074-0997 USA  
1731106  
04/2007  
Part No.:  
Rev.  
TP 400-3901-00-AT-SMA  
© Copyright 2007 Simplicity Manufacturing, Inc. All Rights Reserved. Printed In USA.  
Table Of Contents  
PRODUCT COMPONENTS  
PAGES  
Tuff Torq PTO Group - 540 RPM .........................................................................................................................  
4
Torque Specification Chart ..................................................................... Inside Back Cover  
Tuff Torq PTO Group - 540 RPM  
1694399  
NOTE: Unless noted otherwise,  
use the standard hardware torque  
specification chart.  
The above parts group applies to the following Mfg. Nos.:  
1694399 - 540 RPM P.T.O.  
Briggs and Stratton Yard Power Products Group  
Copyright © 2007 by Briggs and Stratton Corporation  
Milwaukee, WI, USA. All rights reserved  
4
TP 400-3901-00-AT-SMA  
Tuff Torq PTO Group - 540 RPM  
REF NO PART NO. QTY. DESCRIPTION  
1
2
1960666SM  
1726043SM  
1920397SM  
1654634SM  
1960680SM  
1676148SM  
1669105SM  
1724225SM  
1919326SM  
1722460SM  
1960615SM  
1725790SM  
1724216SM  
1725010SM  
1664847SM  
1725944SM  
1960677SM  
1724229SM  
1725574SM  
1726291SM  
1726474SM  
1726249SM  
1724963SM  
1726283SM  
1726106SM  
1726169SM  
1718122SM  
1
1
1
2
1
2
1
1
2
2
1
1
1
1
2
1
2
1
1
4
1
1
1
1
1
1
10  
CAPSCREW, Hex Head, 1/4 - 20 x 7/8  
HANDLE, 540 PTO  
3
NUT, Nylock, 1/4 - 20  
SWITCH, Ball  
4
5
NUT, Hex Washer, 3/8 -16  
BUSHING  
6
7
SPACER  
8
HANDLE ASSEMBLY  
WASHER  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
PIN, Quick  
BOLT, Carriage, 3/8 - 16 x 2-1/2  
PTO, 540 RPM, Tuff Torq  
ARM & HUB ASSEMBLY  
ROLL PIN  
CAPSCREW, Hex Washer Head, 5/16 - 18 x 3/4  
SHIELD & DECAL ASSEMBLY  
CAPSCREW, Hex Head, M12 - 1-3/4 x 25mm  
ROD  
DECAL, 540 PTO Lever Control  
CAPSCREW, 8mm x 90mm  
COVER, 540 PTO  
RING, Snap  
WIRE HARNESS  
O-RING  
O-RING  
SOLENOID GASKET  
CAPSCREW, 8mm x 30mm  
Footnotes  
The above parts group applies to the following Mfg. Nos.:  
1694399 - 540 RPM P.T.O.  
Briggs and Stratton Yard Power Products Group  
Copyright © 2007 by Briggs and Stratton Corporation  
Milwaukee, WI, USA. All rights reserved  
5
TP 400-3901-00-AT-SMA  
Hardware Identification & Torque Specifications  
Common Hardware Types  
Torque Specification Chart  
Hex Head Capscrew  
FOR STANDARD MACHINE HARDWARE (Tolerance 20%)  
Washer  
No  
Marks  
Hardware  
Grade  
Lockwasher  
Carriage Bolt  
SAE Grade 2  
SAE Grade 5  
in/lbs  
SAE Grade 8  
in/lbs  
Hex Nut  
Size Of  
in/lbs  
Hardware ft/lbs  
Nm.  
2.1  
2.3  
3.1  
3.5  
7.6  
ft/lbs  
Nm.  
ft/lbs  
Nm.  
Standard Hardware Sizing  
8-32  
8-36  
19  
20  
30  
31  
43  
49  
8
10  
17  
19  
30  
35  
50  
55  
75  
90  
110  
3.4  
3.5  
4.9  
41  
43  
60  
68  
12  
14  
25  
27  
45  
4.6  
4.9  
6.8  
7.7  
16.3  
19.0  
34.0  
34.0  
61.2  
When a washer or nut is identified as 1/2”, this is the  
Nominal size, meaning the inside diameter is 1/2 inch; if a  
second number is present it represent the threads per inch  
10-24  
10-32  
1/4-20  
1/4-28  
5/16-18  
5/16-24  
3/8-16  
3/8-24  
7/16-14  
7/16-20  
1/2-13  
1/2-20  
9/16-12  
9/16-18  
5/8-11  
5/8-18  
3/4-10  
3/4-16  
7/8-9  
27  
31  
66  
76  
11  
12  
20  
23  
30  
35  
50  
55  
65  
75  
90  
100  
160  
180  
140  
155  
220  
240  
5.5  
When bolt or capscrew is identified as 1/2 - 16 x 2”, this  
means the Nominal size, or body diameter is 1/2 inch; the  
second number represents the threads per inch (16 in this  
example, and the final number is the body length of the  
bolt or screw (in this example 2 inches long).  
10.9  
13.6  
23.1  
25.8  
40.8  
47.6  
68.0  
74.8  
102.0  
122.4  
149.6  
8.6  
15.0  
16.3  
27.2  
31.3  
40.8  
47.6  
68.0  
74.8  
88.4  
102.0  
122.4  
136  
217.6  
244.8  
190.4  
210.8  
299.2  
326.4  
The guides and ruler furnished below are designed to  
help you select the appropriate hardware and tools.  
50  
70  
80  
68.0  
95.2  
0
108.8  
149.6  
163.2  
204.0  
231.2  
299.2  
326.4  
525.0  
571.2  
816.0  
897.6  
1/4  
110  
120  
150  
170  
220  
240  
386  
420  
600  
660  
Nut, 1/2”  
1/2  
Inside  
Diameter  
3/4  
120 163.2  
150 204.0  
1
2
3
4
180  
260  
300  
400  
440  
580  
640  
244.8  
353.6  
408.0  
544.0  
598.4  
788.8  
1/4  
1/2  
3/4  
7/8-14  
1-8  
1-12  
Screw, 1/2 x 2  
900 1,244.0  
Body  
Diameter  
870.4 1,000 1,360.0  
1/4  
NOTES  
1/2  
1. These torque values are to be used for all hardware  
excluding: locknuts, self-tapping screws, thread forming  
screws, sheet metal screws and socket head setscrews.  
2. Recommended seating torque values for locknuts:  
a. for prevailing torque locknuts - use 65% of grade 5  
torques.  
b. for flange whizlock nuts and screws - use 135% of  
grade 5 torques.  
3. Unless otherwise noted on assembly drawings, all torque  
values must meet this specification.  
Body  
Length  
3/4  
1/4  
1/2  
3/4  
Wrench & Fastener Size Guide  
1/2  
7/16  
DIA.  
DIA.  
3/8  
5/16  
1/4  
1/4” Bolt or Nut  
Wrench—7/16”  
5/16” Bolt or Nut  
Wrench—1/2”  
3/8” Bolt or Nut  
Wrench—9/16”  
7/16” Bolt or Nut  
Wrench (Bolt)—5/8”  
Wrench (Nut)—11/16”  
1/2” Bolt or Nut  
Wrench—3/4”  

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