Simplicity 520SP User Manual

Parts Manual

Rev. 10/93

TP 400-1216-01-MM-S

MODEL 520SP — 20” CUT, SELF-PROPELLED

MULCHING MOWER

Mfg. No. Description

1692318 Model 520SP, 5Hp, 20” Cut Mulching Mower, Self Propelled

© Copyright 1993 Simplicity Manufacturing, Inc.

All Rights Reserved. Printed In USA.

MANUFACTURING, INC.
500 N Spring Street / PO Box 997

Port Washington, WI 53074-0997 USA

4

TP 400-1216-01-MM-S

© Copyright 1997 Simplicity Manufacturing, Inc. All Rights Reserved.

All Components

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

1692318 5HP, 20” Cut Mulching Mower, SP

5

TP 400-1216-01-MM-S

All Components

1 1713127 Deck - 20” orange 3 spd.
2 1935048 Nut - 5/16-18 flg. lock
3 1713128 Drive wheel support ass’y - blk
4 1713102 Wheel arm - blk
5 1612225 Spacer - front hgt. adj.
6 1612228 Spacer - rear hgt. adj.
7 1612235 Bolt - height adjuster
8 1713129 Setting lever assy L.H. rear
8 1713130 Setting lever assy R.H. rear
9 1713104 Setting lever assy. R.H. front

9 1713103 Setting lever assy. L.H. front
10 1713119 Decal - logo 20”
11 1713118 Decal - danger mulch cover
12 1917642 Washer - 5/16” flat
13 1612214 Washer- shim
14 1612222 Washer- 9/16” flat
15 173668 Washer- 9/16” flat
16 1612286 Washer - 9/16” wave
17 1612288 E-ring
18 1713131 Retainer bracket
19 1713132 Transmission - 3 spd.
20 1713133 Nut- 10mm lock
21 1713134 Spring - compression
22 1925592 Screw - 1/4-20 x 3/4” hex hd. tap
23 1713135 Pulley - transmission
24 1713105 Bracket- hinge
25 1713106 Blade - 20”
26 1713107 Blade - recut 20”
27 1713108 Decal - blade warning
28 1713109 Control - throttle w/cable
29 1713110 Cable - engine/blade control
30 1664068 Screw - #10-16 x 5/8” tap
31 1677809 Rope stop
32 1713116 Cable clamp
33 1713136 Cable - traction control
34 1713137 Bail - engine/blade control
35 1713126 Decal - starting instructions
36 1713551 Adapter- blade

36* 1713111 Adapter - blade

37 1713112 Spacer- blade
38 1713113 Wing nut - plastic
39 1713114 Cover- mulch 20”
40 1713115 Chute deflector assembly
41 1713138 V-belt
42 1677973 Decal - CPSC danger
43 1916965 Washer- 3/8” lock H.D.
44 1713156 Decal - CPSC Danger
45 1677816 Washer - 3/8” conical
46 1917372 Nut - 5/16-18 hex
47 1713117 Bolt - 3/8-24 x 3-1/2” HHCS Gr. 8

48 1713139 Bolt - wheel
49 1921971 Bolt - 3/8-16 x 1-3/4” HHCS Gr. 5
50 1960126 Nut - 1/4 push-on
51 1612215 Plastic tip - height adjuster
52 1706215 Trailing shield - plastic
53 1677890 Washer
54 1960273 Bolt - handle
55 1706236 Handle support
56 1612242 Washer - 3/8” flat
57 1713140 Shift knob - plastic
58 1713141 Drive cover 3 spd.
59 1925003 Screw - 1/4-20 x 1/2” hex hd. tap
60 1713142 Key - transmission
61 1706219 Set screw 1/4-20 x 3/8”
62 1920397 Nut - 1/4-20 lock
63 1706237 Washer - 5/16” wave
64 1713143 Pulley - 11/4” dia.
65 1612326 Clamp - drive cable
66 1612352 Cable tie
67 1713552 Drive pulley

67* 1706218 Drive pulley

68 1612410 Engine ring - red
69 1612366 Eyebolt - 1/4-20
70 1612387 Stud - 1/4-20 x 3/4”
71 960293 Wing nut- 1/4-20 nylon insert
72 1713120 Handle - upper
73 1713144 Bushing - drive bail
74 1713145 Sleeve - drive bail
75 1713121 Bolt - handle mtg.
76 1713122 Bolt - handle supt.
77 1916622 Nut - 1/4-20 hex
78 921880 Washer- 1/4” star
79 6041612 Screw - 1/4-20 x 1-1/2” truss hd.
80 1713146 Bail - ground drive control
81 1612398 Wheel - 8” power propelled
82 1706234 Handle - lower
83 1713147 Drive pin
84 1713148 Pinion R.H. 3 spd.
84 1713149 Pinion L.H. 3 spd.
85 1713124 Rod hinge
86 1713125 Spring - mulch cover
87 1921319 Washer- 1/4” flat
88 1923282 Bolt - 1/4-20 x 2-1/2” HHCS
89 1917421 Nut - 3/8-16 jam lock
90 1706203 Wheel - 8”
91 1713150 Decal - 3 spd. shift inst.
92 1713151 Decal - 3 spd. belt cover
93 1713152 Decal - 3 in 1
94 1713153 Decal - convertible mulcher
95 1929783 Screw - 1/4-20 x 1” hex hd. tap

REF NO. PART NO. DESCRIPTION REF NO. PART NO. DESCRIPTION

Footnotes:

*Prior to Serial No. 1400
Parts are Left or Right Hand as viewed from their operator position.
Specifications are subject to change without prior notice.

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

1692318 5HP, 20” Cut Mulching Mower, SP

THIS PAGE INTENTIONALLY BLANK

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

19

2.1

30

3.4

41

4.6

8-36

20

2.3

31

3.5

43

4.9

10-24

27

3.1

43

4.9

60

6.8

10-32

31

3.5

49

5.5

68

7.7

1/4-20

66

7.6 8 10.9 12 16.3

1/4-28

76

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”

No

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.

0

1/4 3/4

1/2

1

1/4 3/4

1/2

2

1/4 3/4

1/2

3

1/4 3/4

1/2

4