Simplicity 3901 Setup guide

Attachment

Illustrated

Parts List

Rev. 04/2007

500 N. Spring Street / PO Box 997

Port Washington, WI 53074-0997 USA

www.simplicitymfg.com

MANUFACTURING, INC.

. No. Descri

tion

Attachment

1694399 540 RPM P.T.O.

1731106

Part No.:

Table Of Content

Torque Specification Chart ..................................................................... Inside Back Cover

PRODUCT COMPONENTS PAGES

Tuff Torq PTO Group - 540 RPM ......................................................................................................................... 4

Tuff Torq PTO Group - 540 RPM

NOTE: Unless noted otherwise,

use the standard hardware torque

specification chart.

1694399

The above parts group applies to the following Mfg. Nos.:

Briggs and Stratton Yard Power Products Group

1694399 - 540 RPM P.T.O.

TP 400-3901-00-AT-SMA

PART NO. DESCRIPTIONREF NO QTY.

Tuff Torq PTO Group - 540 RPM

Footnotes

CAPSCREW, Hex Head, 1/4 - 20 x 7/81 1960666SM 1

HANDLE, 540 PTO2 1726043SM 1

NUT, Nylock, 1/4 - 203 1920397SM 1

SWITCH, Ball4 1654634SM 2

NUT, Hex Washer, 3/8 -165 1960680SM 1

BUSHING6 1676148SM 2

SPACER7 1669105SM 1

HANDLE ASSEMBLY8 1724225SM 1

WASHER9 1919326SM 2

PIN, Quick10 1722460SM 2

BOLT, Carriage, 3/8 - 16 x 2-1/211 1960615SM 1

PTO, 540 RPM, Tuff Torq12 1725790SM 1

ARM & HUB ASSEMBLY13 1724216SM 1

ROLL PIN14 1725010SM 1

CAPSCREW, Hex Washer Head, 5/16 - 18 x 3/415 1664847SM 2

SHIELD & DECAL ASSEMBLY16 1725944SM 1

CAPSCREW, Hex Head, M12 - 1-3/4 x 25mm17 1960677SM 2

ROD18 1724229SM 1

DECAL, 540 PTO Lever Control19 1725574SM 1

CAPSCREW, 8mm x 90mm20 1726291SM 4

COVER, 540 PTO21 1726474SM 1

RING, Snap22 1726249SM 1

WIRE HARNESS23 1724963SM 1

O-RING24 1726283SM 1

O-RING25 1726106SM 1

SOLENOID GASKET26 1726169SM 1

CAPSCREW, 8mm x 30mm27 1718122SM 10

The above parts group applies to the following Mfg. Nos.:

Briggs and Stratton Yard Power Products Group

1694399 - 540 RPM P.T.O.

TP 400-3901-00-AT-SMA

Torque Specification Chart

FOR STANDARD MACHINE HARDWARE (Tolerance ± 20%)

Hardware

Grade

SAE Grade 2 SAE Grade 5 SAE Grade 8

Size Of

in/lbs in/lbs

in/lbs

Hardware ft/lbs Nm. ft/lbs Nm. ft/lbs Nm.

8-32

2.1

3.4

4.6

8-36

2.3

3.5

4.9

10-24

3.1

4.9

6.8

10-32

3.5

5.5

7.7

1/4-20

7.6 810.9 12 16.3

1/4-28

8.6 10 13.6 14 19.0

5/16-18 11 15.0 17 23.1 25 34.0

5/16-24 12 16.3 19 25.8 27 34.0

3/8-16 20 27.2 30 40.8 45 61.2

3/8-24 23 31.3 35 47.6 50 68.0

7/16-14 30 40.8 50 68.0 70 95.2

7/16-20 35 47.6 55 74.8 80 108.8

1/2-13 50 68.0 75 102.0 110 149.6

1/2-20 55 74.8 90 122.4 120 163.2

9/16-12 65 88.4 110 149.6 150 204.0

9/16-18 75 102.0 120 163.2 170 231.2

5/8-11 90 122.4 150 204.0 220 299.2

5/8-18 100 136 180 244.8 240 326.4

3/4-10 160 217.6 260 353.6 386 525.0

3/4-16 180 244.8 300 408.0 420 571.2

7/8-9 140 190.4 400 544.0 600 816.0

7/8-14 155 210.8 440 598.4 660 897.6

1-8 220 299.2 580 788.8 900 1,244.0

1-12 240 326.4 640 870.4 1,000 1,360.0

Hex Head Capscrew

Hex Nut

Lockwasher

Washer

Carriage Bolt

NOTES

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.

Hardware Identification & Torque Specifications

Common Hardware Types

Screw, 1/2 x 2

Body

Diameter

Body

Length

Inside

Diameter

Nut, 1/2”

Marks

3/8” Bolt or Nut

Wrench—9/16”

3/8

5/16” Bolt or Nut

Wrench—1/2”

5/16

1/4” Bolt or Nut

Wrench—7/16”

1/4

1/2” Bolt or Nut

Wrench—3/4”

1/2

DIA.

7/16

DIA.

7/16” Bolt or Nut

Wrench (Bolt)—5/8”

Wrench (Nut)—11/16”

Wrench & Fastener Size Guide

Standard Hardware Sizing

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

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).

The guides and ruler furnished below are designed to

help you select the appropriate hardware and tools.

1/4 3/4

1/2

1/4 3/4

1/2

1/4 3/4

1/2

1/4 3/4

1/2

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