Parts Manual
YT Series
Lawn Tractors & Mower Decks
16HP Tractors
Mfg. No.
1694368
Description
YT1644, 16HP Hydro
18HP Tractors
Mfg. No.
1694369
Description
YT1850, 18HP Hydro
Mower Decks
Mfg. No.
1694371
1694372
Description
44" Mower Deck
50" Mower Deck
02/2003
Rev.
TP 400-3821-00-CQ-N
Table Of Contents
TRACTOR / MOWER DECK COMPONENTS
PAGES
Frame Group .........................................................................................................................
Steering Group - Manual Steering .........................................................................................
Engine & Electric Clutch Group - 16HP Briggs & Stratton, Vanguard ...................................
Transmission Group ..............................................................................................................
Transmission SERVICE PARTS - Tuff Torq K-66L ...............................................................
Lift Group - Manual Lift ..........................................................................................................
Controls Group ......................................................................................................................
Cruise Control Group ............................................................................................................
Electrical Group .....................................................................................................................
Hood, Grill & Dash Group ......................................................................................................
Seat & Seat Deck Group .......................................................................................................
Wheels & Tires Group ...........................................................................................................
Decals Group - Brand & Model ..............................................................................................
Decals Group - Safety & Common ........................................................................................
44" & 50" Mower Deck - Clutch & Support ............................................................................
44" & 50" Mower Decks - Housing, Arbors & Blades .............................................................
44" Mower Deck - Height Adjustment & Roller Bar ...............................................................
50" Mower Deck - Height Adjustment & Roller Bar ...............................................................
2
6
8
10
14
20
22
26
28
32
34
36
38
40
42
44
48
52
Torque Specification Chart ..................................................................... Inside Back Cover
Frame Group
985881
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
4
7
1
6
8
5
9
Torque to
150 ft. lbs.
(202 Nm)
3
2
34
33
10
11
14
11
29
12
Torque to
150 ft. lbs.
(202 Nm)
15
13
16
17
28
18
21
Torque to
55-60 ft. lbs.
(74-81 Nm)
29
36
35
21
19
30
Service Kit
1686985
32
43
20
23
38
39
40
22
31
37
43
21
43
11
Torque to
41
11
42
25
27
21
24
22-40 ft. lbs.
(30-54 Nm)
26
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
2
TP 400-3821-00-CQ-N
Frame Group
REF NO.
1
PART NO.
QTY.
1
4
4
1
2
2
1
2
2
1
7
1
2
1
1
1
1
2
1
2
6
2
1
1
1
2
1
1
2
4
1
1
4
1
1
1
1
1
1
1
DESCRIPTION
1721748
1923683
1960541
1723528
1928352
1930644
1722602
1923114
1921210
1721572
1930645
1922755
1960103
1722541
1919262
1702779
1708236
1931350
1722626
1611705
1721682
1930650
1722200
1931352
1721752
1927531
1721918
960645
TOWER & SUPPORT ASSEMBLY
CAPSCREW, Hex Washer Head Taptite, 3/8-16 x 3/4
CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 3/4
SUPPORT, Seat Deck
2
3
4
5
NUT, Hex Flange 3/8-16 Whiz Lock, Large
NUT, Hex Flange Two-Way Lock, 1/2-13
BACKPLATE,
6
7
8
CAPSCREW, Hex Head 1/2-13 x 1, Black
CAPSCREW, Hex Head 3/8-16 x 1, Black
FRAME ASSEMBLY, Front & Rear
NUT, Hex Flange Two-Way Lock, 3/8-16
WASHER, 3/8, Black
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
31
32
33
34
35
36
37
38
39
WASHER, 3/8, Black
LINK, Drag
NUT, Hex Jam 1/2-20
JOINT, Ball
SPACER, 3/8 x 1/2 x 5/8
CARRIAGE BOLT, 3/8-16 x 1
ROD, Tie
SPACER, 25/64 x 5/8 x 5/16, Powder Metal
BUSHING, 31/32 x 1-1/4 x 3/4, Powder Metal
NUT, Hex Flange Two-Way Lock, 7/16-14
AXLE ASSEMBLY w/LH Spindle, (Includes Ref. Nos, 21, 35, 36, 37 & 43)
CARRIAGE BOLT, 3/8-16 x 1-1/2
SPACER, 11/16 x 21/32 x 2 3/32
CAPSCREW, Hex Head, 7/16-14 x 2 G8
HOOK, "J"
CAPSCREW, Hex Head, 5/8-11 x 3-1/2
WASHER, 5/8
1960035
1933260
1721805
1723502
1960086
960646
CAPSCREW, Hex Flange Whiz Lock, 3/8-16 x 3/4
BUMPER, Black
BUMPER, Chrome
SCREW, Truss Head Torque Drive, 5/16-18 x 7/8
NUT, Hex Flange Two-Way Lock, 5/8-11
PLATE
1722212
1919394
932577
WASHER, 1
RETIANING RING
1722199
923485
SPINDLE, RH
CAPSCREW, 3/8-16 x 7/8, GR8
LOCKWASHER, 3/8
1663151
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
3
TP 400-3821-00-CQ-N
Frame Group
985881
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
4
7
1
6
8
5
9
Torque to
150 ft. lbs.
(202 Nm)
3
2
34
33
10
11
14
11
29
12
Torque to
150 ft. lbs.
(202 Nm)
15
13
16
17
28
18
21
Torque to
55-60 ft. lbs.
(74-81 Nm)
29
36
35
21
19
30
Service Kit
1686985
32
43
20
23
38
39
40
22
31
37
43
21
43
11
Torque to
41
11
42
25
27
21
24
22-40 ft. lbs.
(30-54 Nm)
26
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
4
TP 400-3821-00-CQ-N
Frame Group
REF NO.
PART NO.
QTY.
DESCRIPTION
HUB & ARM ASSEMBLY
KEY, WOodruff
40
41
42
43
1725112
930671
1
1
1
3
1724264
1704314
SPINDLE, LH
FITTING, Lube
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
5
TP 400-3821-00-CQ-N
Steering Group - Manual Steering
986283
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
2
Steering cap snaps
over steering wheel.
1
3
5
4
7
6
15
8
21
9
10
6
20
16
Torque to
36-44 ft. lbs.
or 48-60 Nm
Use washers
as required.
5
5
17
11
12
18
19
14
13
Bearing mounts below
frame. Slide pinion on
steering shaft into gear
before tightening nuts.
15
Torque to
36-44 ft. lbs.
or 48-60 Nm
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
6
TP 400-3821-00-CQ-N
Steering Group - Manual Steering
REF NO.
PART NO.
1722318
1725024
1960540
1722749
1960114
176440
QTY.
DESCRIPTION
1
2
1
1
1
1
5
2
2
1
2
2
1
1
1
2
1
1
1
1
2
2
1
STEERING WHEEL, Straight, Shaft
CAP, Steering Wheel, Plain
3
PIN, Spring, 5/16 x 2-1/2
4
COVER, Rubber, Upper Steering Shaft
WASHER, 3/4
5
6
BUSHING, 15/32 x 7/8 x 7/8, Nylon
NUT, Hex KEPS 1/4-20
7
928372
8
1721736
1960518
1931317
1722385
1960032
1930645
1664847
1721626
1611710
1722459
1722461
1931211
1933260
1919314
PLATE, Mounting Steering
9
NUT, Push
10
11
12
13
14
15
16
17
18
19
20
21
CARRIAGE BOLT, 1/4-20 x 3/4
GEAR & SHAFT ASSEMBLY, Steering
CAPSCREW, Hex Head, 3/8-16 x 1-1/4, Black
NUT, Hex Flange Two-Way Lock, 3/8-16
CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 3/4
SHAFT & PINION ASSEMBLY, Steering Manual
RING, Clipring Extension
BEARING, 3/4 x 1-11/16 x 13/16, 3" Long Housing
SPACER, 3/4 x 1-1/16 x 3/8, Powder Metal
NUT, Hex Flange Whiz Lock, 3/8-16, Small
CAPSCREW, Hex Whiz Lock Flange, 3/8-16 x 3/4, Black
PIN, Cotter, 1-1/4, Black
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
7
TP 400-3821-00-CQ-N
Engine & Electric Clutch Group - 16HP Briggs & Stratton, Vanguard
985902
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
6
3
5
4
Engine manufactures
gasket & hardware.
Torque to 18 ft. lbs.
(25 Nm)
B&S Vandguard Twin:
1
2
Tie cables to Left
Hand side of shield.
7
30
29
8
31
32
7
9
10
26
27
22
23
26
28
25
24
23
11
10
Engine Ground
Wire
Torque to
19-23 ft. lbs.
(26-31 Nm)
20
19
21
11
Position pulley
chamfer side up.
Note:
Orentation
of All Keys
18
22
12
Tie clutch wire
to spring away
from pulley.
17
14
15
16
13
Torque to
45-50 ft. lbs.
(61-68 Nm)
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
8
TP 400-3821-00-CQ-N
Engine & Electric Clutch Group - 16HP Briggs & Stratton, Vanguard
REF NO.
PART NO.
1723165
*
QTY.
DESCRIPTION
1
2
1
1
HOSE, Oil Drain, 10-1/2" Long, 3/8-18 Fittings
ENGINE, 16HP Briggs & Stratton Vanguard Twin, Model 303777, Type
1114
3
4
1719847
1722388
1925003
1721950
1701011
960112
1718678
1722392
1929000
1722288
932747
1708264
1918199
1960648
1717664
1720463
930598
1
1
2
1
2
2
1
2
8
1
1
1
1
1
1
1
4
1
1
8
4
2
1
2
1
2
1
1
4
4
SEAL, Circle
BULKHEAD
5
CAPSCREW, Hex Washer Head Taptite, 1/2-20 x 1/2, Black
CONTROL, Throttle Double 39" Long w/Knobs
TIE, Wire, 7-5/16" Long
6
7
8
CLAMP, Hose Type E
9
HOSE, Fuel, 59" Long
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
SHIELD, Side
CAPSCREW, Hex Washer Head Taptite, 1/4-20 x 3/8
PULLEY & HUB ASSEMBLY
TIE, Self Locking, 3-5/8 Long
WASHER, Hex, 7/16, Black
LOCKWASHER, 7/16
CAPSCREW, Hex Head, 7/16-20 x 3-3/4
CLUTCH, Electric
KEY, HI PRO, 1/4 x 2 1/2
CAPSCREW, Hex Washer Head Taptite, 3/8-16 x 1-1/2
LOCKWASHER, External Tooth, 3/8
SHIELD, Muffler Bottom
920427
1722414
1960368
1960295
1935255
1722389
934683
1722390
1924856
1722625
*
NUT, Speed, 1/4-20, Lug
CAPSCREW, Hex Flange Whiz Lock, 1/4-20 x 5/8
NUT, Speed, 5/16-18, Lug, Black
DUCT, Muffler Top
CLIP, Wire 1/8
DUCT, Muffler Extension
CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 1/2, Black
MUFFLER, Briggs & Stratton, Vanguard Twin
GASKET, Briggs & Stratton, Vanguard Twin
LOCKWASHER, 5/16
1917356
960660
CAPSCREW, Hex Flange Whiz Lock, 5/16-18 x 7/8
Footnotes
* See your local Briggs & Stratton distributor for parts and service.
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
9
TP 400-3821-00-CQ-N
Transmission Group
985888
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
7
6
4
3
9
10
2
5
8
11
1
12
13
20
14
15
48
19
47
37
46
17
45
43
21
44
18
16
Torque nut to
29 - 34 ft. lbs.
(39 - 46 Nm)
22
42
Route through Right
Hand slot of back plate.
41
10
15
Left
40
23
Right
39
15
38
37
10
24
Right Hand
Side Only.
31
13
25
26
15
13
36
32
33
34
27
30
Left Hand
Side
35
17
Spring to be
28
29
compressed to
Right Hand
Side
2-1/2 inches with
brake locked.
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
10
TP 400-3821-00-CQ-N
Transmission Group
REF NO.
1
PART NO.
1920397
1960654
1722174
1722173
1960636
1704351
1928352
1960637
1931350
1919438
1721728
1676148
1924940
1922130
1722460
1722151
1925125
1721360
1716289
1669105
1723126
1721622
1921210
1722903
1919326
1923141
1960590
1722152
1921333
1722383
1721952
1918447
1721424
1722684
8191045
1919439
1960141
1960027
1722648
1721988
QTY.
2
DESCRIPTION
NUT, Hex Lock ESNA Light, 1/4-20
SCREW, Truss Head, 1/4-20 x 2
PAD, Footrest, LH, Differential Lock
PAD, Footrest, RH
2
2
3
1
4
1
5
1
NUT, Hex KEPS, 5/16-18
6
15
2
FASTENER, 11/16" Long, Stem Plastic
NUT, Hex Flange Whiz Lock, 3/8-16, Large
NUT, Hex KEPS, 3/8-16
7
8
6
9
6
CARRIAGE BOLT, 3/8-16 x 1
NUT, Hex Lock ESNA Light, 5/16-18
SUPPORT
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
6
2
2
BUSHING, 5/8 x 3/4 x 13/32, Powder Metal
WASHER, 3/8
4
1
CAPSCREW, Hex Head, 3/8-16 x 2-1/4
PIN, Quick
7
1
ROD, Differential Lock, 15-3/16 Long
WASHER, 7/16
2
1
ROD & TUBE ASSEMBLY, Differential Lock Pedal
KNOB
1
1
SPACER, 25/64 x 5/8 x 1-1/2, Hardened
KNOB, 3 Sided Soft
1
1
ROD, Free Wheel, 18-3/16 Long
CAPSCREW, Hex Head, 3/8-16 x 1, Black
PIVOT ASSEMBLY, Differential Lock
WASHER, 5/16, Black
1
1
2
2
CAPSCREW, Hex Head, 5/16-18 x 2 3/4, Black
CAPSCREW, Hex Head, 5/16-18 x 3, Black
ROD, Differential Latch, 2 Bends, 6-3/16 Long
CAPSCREW, Hex Head, 5/16-18 x 1
ARM, Differential Lock
2
1
1
1
1
TRANSMISSION ASSEMBLY, K66 Transmission
PIN, Cotter, 3/4, Black
1
1
ROD, Brake, 17-27/64 Long
SPRING, Compression
1
1
SPRING, Compression
1
NUT, Hex Lock, ESNA Light 3/8-16
WASHER, 5/16
2
1
WASHER, 1/2
1
BEARING, 1/2 x 9/16 x 3/4, Nylon
ARM & WELD PINS ASSEMBLY, Control K66
1
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
11
TP 400-3821-00-CQ-N
Transmission Group
985888
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
7
6
4
3
9
10
2
5
8
11
1
12
13
20
14
15
48
19
47
37
46
17
45
43
21
44
18
16
Torque nut to
29 - 34 ft. lbs.
(39 - 46 Nm)
22
42
Route through Right
Hand slot of back plate.
41
10
15
Left
40
23
Right
39
15
38
37
10
24
Right Hand
Side Only.
31
13
25
26
15
13
36
32
33
34
27
30
Left Hand
Side
35
17
Spring to be
28
29
compressed to
Right Hand
Side
2-1/2 inches with
brake locked.
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
12
TP 400-3821-00-CQ-N
Transmission Group
REF NO.
PART NO.
1721392
1722194
1719968
1719233
1933958
1931335
1721593
1921719
QTY.
DESCRIPTION
41
42
43
44
45
46
47
48
1
1
1
1
3
1
1
1
V-BELT
PULLEY & HUB ASSEMBLY, Transmission
NUT, Hex Flange, M10-1.5, Nylon Insert
FAN, 5 Blades, 3 Holes
CAPSCREW, Hex Washer Head Taptite, 1/4-20 x 1-1/8
CARRIAGE BOLT, 5/16-18 x 1
STRAP, 4-1/4 Long
CAPSCREW, Hex Head, 5/16-18 x 2-1/2
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
13
TP 400-3821-00-CQ-N
Transmission SERVICE PARTS - Tuff Torq K-66L
1721952
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
104
103
93
17
18
102
3
101
26
4
6
16
15
100
99
5
14
98
95
97
96
19
7
10
94
21
20
13
92
8
12
9
91
10
11
90
88
89
12
87
83
13
86
85
84
26
25
24
22
23
82
81
5
80
79
27
31
31
28
29
33
105
45
30
34
35
46
36
47
55
32
5
48
49
39
42
50
76
40
107
77
51
37
41
41
52
38
53
75
54
78
56
44
57
74
60
59
58
61
53
51
52
20
106
63
62
73
72
64
65
71
70
67
68
69
66
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
14
TP 400-3821-00-CQ-N
Transmission SERVICE PARTS - Tuff Torq K-66L
REF NO.
1
PART NO.
1718076
1724314
1708651
1708650
1708672
1718083
1724699
1722223
1724696
1720789
1724692
1724693
1718264
1724695
1724746
1724745
1724740
1724742
1724743
1707890
1724744
1724708
1724709
1721181
1721966
1707912
1724697
1718070
1724698
1718084
1718079
1708675
1724700
1724702
1724701
1724723
1724726
1724724
1724725
1724714
QTY.
1
1
1
1
4
1
1
1
1
2
1
2
2
1
1
1
1
1
1
3
1
1
1
1
1
2
1
1
3
1
2
1
1
1
1
1
1
1
1
1
DESCRIPTION
RING E15
2
FAN
3
SEAL
4
RING 35
5
RING 15
6
BEARING 6202UC3
SHAFT, PUMP
PIN 3 x 13.8
7
8
9
CAP, M20B
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
O-RING, P18
HOUSING, UPPER
BUSHING, 25.4
SEAL S25.4 x 42 x 8
BOLT, 8 x 20
FITTING
SEAL, 8
VALVE, VENT 15
TANK, RESERVOIR
PIPE, 8
SCREW, TAPPING
BRACKET, TANK
ARM, CONTROL
SPRING, TORSION
COLLAR, CONTROL
WASHER 17 x 30 x 1
RING
CASE, CENTER
PIN 3 x 9.8
BOLT, 10 x 65
WASHER 12 x 24 x 1
CYLINDER BLOCK
BEARING, THRUST
HOUSING
BEARING, 6302UC3
SHAFT, MOTOR
DISC, BRAKE
ACTUATOR, BRAKE
SHOE, BRAKE
SHIM SET
SHAFT, FINAL PINION
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
15
TP 400-3821-00-CQ-N
Transmission SERVICE PARTS - Tuff Torq K-66L
1721952
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
104
103
93
17
18
102
3
101
26
4
6
16
15
100
99
5
14
98
95
97
96
19
7
10
94
21
20
13
92
8
12
9
91
10
11
90
88
89
12
87
83
13
86
85
84
26
25
24
22
23
82
81
5
80
79
27
31
31
28
29
33
105
45
30
34
35
46
36
47
55
32
5
48
49
39
42
50
76
40
107
77
51
37
41
41
52
38
53
75
54
78
56
44
57
74
60
59
58
61
53
51
52
20
106
63
62
73
72
64
65
71
70
67
68
69
66
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
16
TP 400-3821-00-CQ-N
Transmission SERVICE PARTS - Tuff Torq K-66L
REF NO.
41
42
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
PART NO.
1724715
1724717
1724716
1720761
1724729
1724730
1724733
1724731
1724719
1720860
1720858
1720859
1724720
1724737
1724736
1724738
1718262
1724718
1718065
1720761
1724734
1724739
1724732
1724735
1720788
1724741
1720796
1720788
1718226
1707789
1720807
1720808
1724704
1718039
1724706
1724705
1724707
1718234
1721267
1718237
QTY.
2
1
1
1
1
1
1
1
1
2
2
2
1
8
1
1
1
1
1
1
1
2
1
1
2
1
2
1
5
5
1
1
1
1
1
1
1
1
1
1
DESCRIPTION
WASHER, 15 x 32 x 3.2
PINION, FINAL
GEAR, REDUCTION
FILTER (25)
PUMP, CHARGE
SPRING, CHARGE PUMP
FORK, PIVOT
FORK, DIFF LOCK
SHAFT, AXLE RH #1
BUSHING
THRUST WASHER
RING
COLLAR, 25.4
PIN, DIFF LOCK
SLIDER, DIFF LOCK
PLATE, DIFF LOCK
DIFFERENTIAL GEAR KIT
SHAFT, AXLE LH #1
MAGNET
FILTER (25)
HOOK, SPRING
PACKING, 1AG25
ARM, DIFF LOCK
PLATE, ARM
BOLT 10 x 12
SPRING, RETURN
WASHER, SEAL
BOLT 10 x 12
BOLT, 8 x 75
SCREW, TAPPING
CAP (M40)
PACKING 1A 2040
STAY
SHOCK ABSORBER
LEVER, CONTROL
PIN
PIN, 3.5 x 25
PUMP SHAFT
THRUST PLATE A
BEARING K81106
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
17
TP 400-3821-00-CQ-N
Transmission SERVICE PARTS - Tuff Torq K-66L
1721952
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
104
103
93
17
18
102
3
101
26
4
6
16
15
100
99
5
14
98
95
97
96
19
7
10
94
21
20
13
92
8
12
9
91
10
11
90
88
89
12
87
83
13
86
85
84
26
25
24
22
23
82
81
5
80
79
27
31
31
28
29
33
105
45
30
34
35
46
36
47
55
32
5
48
49
39
42
50
76
40
107
77
51
37
41
41
52
38
53
75
54
78
56
44
57
74
60
59
58
61
53
51
52
20
106
63
62
73
72
64
65
71
70
67
68
69
66
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
18
TP 400-3821-00-CQ-N
Transmission SERVICE PARTS - Tuff Torq K-66L
REF NO.
82
PART NO.
1718239
1724703
1718089
1718061
1708684
1724711
1718097
1707879
1708689
1708692
1724712
1718120
1724710
1720838
1708691
1720418
1720421
1724727
1724728
1708690
1724722
1718100
1724721
1724691
1724694
1724713
QTY.
1
DESCRIPTION
THRUST PLATE B
PLATE, SWASH
THRUST METAL
RING
83
1
84
2
85
1
86
1
SPRING
87
1
FULCRUM, ECCENTRICIT
PIN 6.0A x 25
88
1
89
2
PACKING
90
1
WASHER
91
1
NUT 12
92
1
PIN, 4 x 28
93
1
SEAL TC162606
SHAFT, CONTROL
SHAFT (BYPASS)
PACKING
94
1
95
1
96
2
97
1
LEVER, BYPASS
PIN 3.0A x 20
98
1
99
1
SHAFT, BRAKE HL #10
WASHER, 16 x 23 x 1.6
PACKING
100
101
102
103
104
105
106
107
1
1
1
SPRING, BRAKE
PIN 6.0A x 4.0
ARM, BRAKE
2
1
1
HOUSING, COMPLETE SET
HOUSING, LOWER
GEAR, FINAL
1
1
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
19
TP 400-3821-00-CQ-N
Lift Group - Manual Lift
985894
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
Torque to
23-28 ft. lbs.
(31-38 Nm)
2
3
1
4
5
6
Rotate clockwise
as far as possible
before tighting.
7
8
9
24
23
22
21
11
20
10
19
12
18
1
17
14
16
13
15
Assemble into
lower hole of Ref. Item 20.
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
20
TP 400-3821-00-CQ-N
Lift Group - Manual Lift
REF NO.
PART NO.
1927557
1931333
1722291
1723124
1960518
1723321
1721581
1926149
1721712
1960636
1722482
1722112
156302
QTY.
2
DESCRIPTION
1
2
NUT, Hex Whiz Lock Flange, 5/16-18, Large, Black
CARRIAGE BOLT, 5/16-18 x 3/4
GRIP, Lift Lever
4
3
1
4
1
BUTTON, Red Nylon, for 1/4 Rod
NUT, Push
5
1
6
1
SPRING, Compression, Lift Lever
QUADRANT, Lift, Powdered Metal
CAPSCREW, Hex Head, 5/16-18 x 1, G8, Black
LEVER ASSEMBLY, Lift
7
1
8
2
9
1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
5
NUT, Hex KEPS, 5/16-18
1
ROD, Latch
1
LOCK, Lift, Powdered Metal
SPRING, Extension
1
1723163
1721652
1919381
1921160
1722819
1960033
1721654
1935255
1675232
1723499
1722357
1
SPACER, 1/2 x 3/4 x 23/32
BAR, Lift, 8-15/16 Long
1
1
WASHER, 5/16, Black
1
CAPSCREW, Hex Head, 5/16-18 x 2-1/4
PIN, Flat Head Drilled, 1/2 x 2-1/8 Long
CLIP, Hair Pin, 2-9/16 Long
SHAFT ASSEMBLY, Lift
1
1
1
1
NUT, Speed, 5/16-18, Lug
SPRING, Compression
1
1
RETAINER, Spring Flat
1
CAPSCREW, Hex Washer Head, 5/16-18 x 4-1/2
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
21
TP 400-3821-00-CQ-N
Controls Group
985882
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
3
2
1
4
7
5
9
20
6
19
40
7
8
10
11
15
12
39
31
18
13
14
36
16
17
38
37
36
41
35
42
21
34
30
22
32
1
33
16
31
11
4
25
23
27
25
26
29
28
24
5
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
22
TP 400-3821-00-CQ-N
Controls Group
REF NO.
1
PART NO.
QTY.
1
1
1
2
1
1
2
2
1
1
3
1
1
1
1
3
2
1
2
1
1
1
1
1
3
1
1
2
1
1
4
2
1
1
1
4
1
1
1
1
DESCRIPTION
1721353
1721891
1930591
1919326
1721476
1723242
1931353
1663114
921133
ROD, Brake Lock
2
KNOB, Push On, Red Plastic "P"
CAPSCREW, Hex Flange Whiz Lock, 5/16-18 x 3/4
WASHER, 5/16, Black
3
4
5
ROD, Brake
6
SPACER, 11/32 x 9/16 x 1/2
CARRIAGE BOLT, 3/8-16 x 1 3/4
BUSHING, 5/8 x 3/4 x 3/4, Nylon
FITTING, Lube, 1/4
7
8
9
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
1723278
1722460
1724036
1960020
1704420
1721134
1924940
1919439
1721133
1723237
1722513
1722084
1931320
1918447
1721354
1664847
1919438
1919381
1927557
1722535
1721577
1931334
1921333
1722083
1923683
1722070
1960636
1721675
1722071
1721674
1920397
SPRING, Extension
PIN, Quick
ARM & HUB ASSEMBLY, Idler
WASHER, 5/8
RING, Clipring Extension
PULLEY, w/Bearing
WASHER, 3/8
NUT, Hex Lock ESNA Light, 3/8-16
PULLEY, Idler
BUSHING, 1 x 1-1/8 x 5/8, Nylon
ARM, Brake
PEDAL ASSEMBLY, Foot
CARRIAGE BOLT, 1/4-20 x 1-1/4
PIN, Cotter, Black
LATCH, Brake
CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 3/4
NUT, Hex Lock ESNA Light, 5/16-18
WASHER, 5/16, Black
NUT, Hex Flange Whiz Lock Large, 5/16-18
PEDAL, Brake
PAD, Brake Pedal
CARRIAGE BOLT, 5/16-18 x 7/8
CAPSCREW, 5/16-18 x 1
ACTUATOR, Switch 2.53" Long
CAPSCREW, Hex Washer Head Taptite, 3/8-16 x 3/4
PEDAL, Forward
NUT, Hex KEPS, 5/16-18
PAD, Foot Pedal Forward
PEDAL, Reverse
PAD, Foot Pedal Reverse
NUT, Hex Lock ESNA Light, 1/4-20
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
23
TP 400-3821-00-CQ-N
Controls Group
985882
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
3
2
1
4
7
5
9
20
6
19
40
7
8
10
11
15
12
39
31
18
13
14
36
16
17
38
37
36
41
35
42
21
34
30
22
32
1
33
16
31
11
4
25
23
27
25
26
29
28
24
5
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
24
TP 400-3821-00-CQ-N
Controls Group
REF NO.
PART NO.
QTY.
DESCRIPTION
CAM, Roller
41
42
1686612
1721995
1
1
SPRING, Extension
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
25
TP 400-3821-00-CQ-N
Cruise Control Group
985883
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
3
2
4
1
5
7
6
23
8
8
22
9
21
24
10
20
19
12
18
17
11
12
13
15
16
14
Hook into
hole "A"
of frame.
Hole "A"
6
Control Arm
from transmission
group.
Brake arm
at idler pivot.
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
26
TP 400-3821-00-CQ-N
Cruise Control Group
REF NO.
PART NO.
1722314
1722293
1722303
1920397
1722003
1960103
1931333
1924361
1709043
1931342
1960273
1722460
1722117
1722481
159106
QTY.
1
DESCRIPTION
1
2
COVER, w/Cruise Icon
1
CAPSCREW, 1/4-20 x 7/8
KNOB, Cruise
3
1
4
1
NUT, Hex Lock ESNA Light, 1/4-20
LEVER & BRACKET ASSEMBLY, Cruise
WASHER, 3/8, Black
5
1
6
2
7
1
CARRIAGE BOLT, 5/16-18 x 3/4
WASHER, 1/2
8
2
9
1
SPACER, w/Flange, 11/32 x 15/32 x 3/4
CARRIAGE BOLT, 5/16-18 x 2 3/4
CARRIAGE BOLT, 5/16-18 x 2-1/4
PIN, Quick
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
1
2
1
ROD, Cruise
1
ROD, Return
1
SPRING, Cruise Return to Frame
NUT, Hex KEPS, 5/16-18
CAPSCREW, Hex Washer Head Plastite, 10-14 x 5/8
SWITCH, Push, Neutral Start, Gray
SPACER, 11/32 x 5/8 x 1-13/32
WASHER, 5/16, Black
1960636
1960001
1717050
1722080
1919326
1919381
1919438
1677746
1918447
2
2
1
1
1
1
WASHER, 5/16, Black
1
NUT, Hex Lock ESNA Light, 5/16-18
SPRING, Compression
1
1
PIN, Cotter
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
27
TP 400-3821-00-CQ-N
Electrical Group
985911
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
HOOD MOUNTED
DASH MOUNTED
9
1
7
3
8
6
2
5
12
11
10
16
14
15
17
18
13
19
Instrument
Panel
4
21
22
6
UNDER HOOD
20
Tie solenoid
wires to
harness.
42
UNDER
FRAME
Tie main harness
and starter wire
up. Wires should
not hang below
side panel with
hood closed.
21
Headlight
Switch
21
Tie upper
harness
to tower.
41
Cruise Switch
(See Controls Group
for Mounting Hardware)
To Electric
Clutch
40
UNDER HOOD
23
To Engine
To Charge Circuit
Pedal
Switch
To Fuel
Shut-Off
Starter
To Engine
Ground
To Oil
24
26
25
UNDER SEAT DECK
Pressure
Sensor
28
30
Seat
31
27
29
Switch
(NC)
To Engine
Magneto
39
34
35
38
37
32
36
33
43
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
28
TP 400-3821-00-CQ-N
Electrical Group
REF NO.
PART NO.
QTY.
DESCRIPTION
1
2
1721810
1677371
1723451
1722669
1722887
1925003
1665238
1665237
1722611
1722228
1920263
920426
1
4
4
1
1
2
1
1
1
1
2
3
1
1
HEADLIGHT ASSEMBLY, 4 Bulb, (Includes Ref. Nos. 2 & 3)
BULB, Headlight, 12.8V
3
SOCKET ASSEMBLY, Headlight, Sealed
HARNESS, Headlight
4
5
SWITCH, PTO Push/Pull Symbols
CAPSCREW, Hex Washer Head Taptite, 1/4-20 x 1/2, Black
BREAKER, Circuit, 12 Volt 20 Amps
WIRE, 12GA 5-15/16 Long, Red
PLUG, Hole, Square
6
7
8
9
10
11
12
13
14
PANEL, Instrument w/ Fuel Gage & Hour Meter
NUT, Hex, 5/16-24
LOCKWASHER, External Tooth, 5/16
SOLENOID
1722739
1686734
SWITCH ASSEMBLY, Ignition 5/8-32, 6 Pin INDAK, (Includes Ref. Nos.
15, 16, 17, 18 & 19)
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
1717163
1717550
1717549
1960547
101025
1
1
1
1
1
1
3
1
1
1
1
1
2
2
2
2
1
1
1
5
5
1
1
2
1
1
KEYS, Set of 2
COVER, For Ignition Switch, Plastic
NUT, Hex Flange, 5/8-32, Ignition Switch
LOCKWASHER, Internal Tooth, 5/8, Thin
WASHER, Shim
1722715
1701011
1716951
1713535
1721830
1603618
1677296
916622
HARNESS, Wiring Upper
TIE, Strap, 7-5/16 Long
SWITCH, Headlights , 2 Terminal
BOOT, Insulator Cable Terminal, 1-15/16 Long, Red
CABLE, #6 x 25" Long, Ring Terminals
CABLE, #6 x 8" Long, Ring Terminals
BOOT, Insulator Battery Terminal
NUT, Hex, 1/4-20
916964
LOCKWASHER, 1/4
921319
WASHER, 1/4
923341
CAPSCREW, Hex Head, 1/4-20 x 3/4
CABLE, #6 x 26 Long, Ring Terminal
BATTERY, 12 Volt
1713163
1685215
1722009
1930531
1917365
1722309
1686921
1960536
1716368
1723249
STRAP, Battery, 14 Long, Rubber
SCREW, Truss Head Phillips, #10-32 x 1/2
LOCKWASHER, 3/16 #10
PLUG, Hole 3", Round
SENDER, Fuel Tank
CAPSCREW, Hex Washer Head Plastite, 1/4 x 1/2
SWITCH, Seat, Grey, NC
SWITCH, Push Button, Foot Pedal
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
29
TP 400-3821-00-CQ-N
Electrical Group
985911
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
HOOD MOUNTED
DASH MOUNTED
9
1
7
3
8
6
2
5
12
11
10
16
14
15
17
18
13
19
Instrument
Panel
4
21
22
6
UNDER HOOD
20
Tie solenoid
wires to
harness.
42
UNDER
FRAME
Tie main harness
and starter wire
up. Wires should
not hang below
side panel with
hood closed.
21
Headlight
Switch
21
Tie upper
harness
to tower.
41
Cruise Switch
(See Controls Group
for Mounting Hardware)
To Electric
Clutch
40
UNDER HOOD
23
To Engine
To Charge Circuit
Pedal
Switch
To Fuel
Shut-Off
Starter
To Engine
Ground
To Oil
24
26
25
UNDER SEAT DECK
Pressure
Sensor
28
30
Seat
31
27
29
Switch
(NC)
To Engine
Magneto
39
34
35
38
37
32
36
33
43
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
30
TP 400-3821-00-CQ-N
Electrical Group
REF NO.
PART NO.
QTY.
DESCRIPTION
41
42
43
1717050
1722716
1685303
1
1
SWITCH, Cruise Control, Grey, NO
HARNESS, Wiring Lower
GASKET
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
31
TP 400-3821-00-CQ-N
Hood, Grill & Dash Group
985897
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
2
3
4
5
1
3
14
7
See Electrical
Group
12
13
6
3
8
10
11
9
8
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
32
TP 400-3821-00-CQ-N
Hood, Grill & Dash Group
REF NO.
PART NO.
1721804
41721804
1722110
41722110
1960295
1960392
1722107
1723123
1933896
1930641
1721803
41721803
1721808
1721802
41721802
1721810
QTY.
DESCRIPTION
1
1
1
PANEL, RH Side, Orange
PANEL, RH Side, Red
1
2
1
HOOD, w/Louver, Orange
HOOD, w/Louver, Red
2
1
3
12
1
CAPSCREW, Hex Flange Whiz Lock, 1/4-20 x 5/8
SCREW, Pan Head Phillips, #10-24 x 1/2
DASHBOARD
4
5
1
6
1
ROD, Dash Support
7
1
NUT, Hex Lock, w/Nylon Insert, 10-24
NUT, Hex Flange Whiz Lock, 1/4-20, Large, Black
PANEL, LH Side, Orange
PANEL, LH Side, Red
8
12
1
9
9
1
10
11
11
12
1
HINGE, LH
1
GRILLE, Orange
1
GRILLE, Red
1
HEADLIGHT ASSEMBLY, 4 Bulb (See Electrical Group for internal
components)
13
14
1721809
1722391
1
1
HINGE, RH
DUCT, Air Inlet
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
33
TP 400-3821-00-CQ-N
Seat & Seat Deck Group
985908
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
7
6
5
4
8
3
9
10
2
11
12
13
14
15
1
31
30
27
16
26
9
14
29
17
18
5
25
19
28
20
Torque to
See Electrical
Group
22
25-30 in. lbs.
32
33
21
23
9
24
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
34
TP 400-3821-00-CQ-N
Seat & Seat Deck Group
REF NO.
1
PART NO.
1722129
1722307
1722306
1722128
172434
QTY.
1
DESCRIPTION
BRACKET, 1-5/8 x 1-3/4
* SEAT, 18" Back, Optional
* SEAT, 15" Back, Standard
SUPPORT,
2
1
2
1
3
1
4
1
CLIP, Wire
5
1709256
1714263
1919438
1717051
1930591
1931339
1931350
1722356
1935255
1930601
1722309
1722109
1921319
1916964
1921959
1931277
1715917
1722340
1654930
1722432
1960636
1722106
41722106
1722108
1722105
41722105
1663752
1930645
1924940
1722300
1722337
2
WASHER, Spring, 5/16 x 1-1/4, Black
SPRING, Compression
NUT, Hex Lock, ESNA Light 5/16-18
SPRING, Compression
CAPSCREW, Hex Flange Whiz Lock, 5/16-18 x 3/4
CARRIAGE BOLT, 5/16-18 x 2
CARRIAGE BOLT, 3/8-16 x 1
SLIDE, Seat
6
2
7
10
2
8
9
12
2
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
26
27
28
28
29
30
31
32
33
2
1
4
NUT, Speed, 5/16-18, Lug
CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 5/8
PLUG, Plastic
4
2
1
POD, with Cup Holder, LH
WASHER, 1/4
8
8
LOCKWASHER, 1/4
8
CAPSCREW, Hex Head, 1/4-20 x 5/8
NUT, Hex Flange, 5/16-18, Whiz Lock Small, Black
CAP, Gas
4
1
1
TUBE & ELBOW ASSEMBLY
BUSHING, 3/8 x 9/16 x 5/8, Rubber
TANK, Fuel
1
1
8
NUT, Hex KEPS, 5/16-18
DECK, Seat, Orange
1
1
DECK, Seat, Red
1
POD, RH with 2 Slots
1
TUNNEL, Orange
1
TUNNEL, Red
2
SPACER, 25/64 x 5/8 x 3/16, Hardened
NUT, Hex Flange Two-Way Lock, 3/8-16
WASHER, 3/8
2
2
1
FUEL GAUGE
1
GROMMET
Footnotes
* Arm Rest Kit - 1686907
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
35
TP 400-3821-00-CQ-N
Wheels & Tires Group
W985914
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
3
4
5
6
4
Use as required.
7
8
9
10
Front Wheels
11
13
14
16
15
12
17
18
6
8
Use as
required.
7
19
20
10
Rear Wheels
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
36
TP 400-3821-00-CQ-N
Wheels & Tires Group
REF NO.
PART NO.
1722305
1722833
164247
QTY.
DESCRIPTION
1
2
2
2
2
4
2
4
4
8
6
4
2
4
2
2
2
2
2
2
2
10
WHEEL & TIRE ASSEMBLY, Front, (Includes Ref. 2, 3, 4, 5 & 6)
TIRE, 16 x 6-1/2 - 8 Super Turf, Front
TUBE, Tire 16 x 6-1/2 - 8, Front
BEARING, Ball
3
4
1717056
1722834
172353
5
WHEEL, 5 3/8 x 7-15/16, Front
VALVE STEM & CAP ASSEMBLY
WASHER
6
7
1919394
1722726
932577
8
WASHER, Special, 1 x 2-1/2
RING, Shaft
9
10
11
12
13
14
15
16
17
18
19
20
1722676
105337
CAP, Hub Grey, 2-23/64
KEY, HI PRO, 1/4 x 2
960200
WASHER
1723112
1721400
1722766
1722830
157638
SPACER, 1-1/16 x 1-1/2 x 1-23/32, Black
PLATE & HUB ASSEMBLY, Rear Wheel w/Studs
WHEEL & TIRE ASSEMBLY, Rear 23"
TIRE, 23 x 10-1/2 - 12 Super Turf, Rear
TUBE, Tire 23 x 10-1/2 - 12, Rear
WHEEL, 7 x 12, Rear
1722831
934712
RING, Shaft
177725
NUT, Hex 7/16-20, For Wheel Bolt
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
37
TP 400-3821-00-CQ-N
Decals Group - Brand & Model
B986279
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
3
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
38
TP 400-3821-00-CQ-N
Decals Group - Brand & Model
REF NO.
PART NO.
1725061
1725065
1725066
1725062
1725063
QTY.
DESCRIPTION
1
2
2
3
3
1
1
1
2
2
DECAL, Snapper
DECAL, Hood Stripe, Snapper, LH
DECAL, Hood Stripe, Snapper, RH
DECAL, YT1644
DECAL, YT1850
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
39
TP 400-3821-00-CQ-N
Decals Group - Safety & Common
C985914
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
4
1
2
1723143
3
WARNING
AVOID SERIOUS INJURY OR DEATH
• READ OPERATOR'S MANUAL(S).
DANGER
DANGER
• KNOW LOCATION AND FUNCTION OF ALL CONTROLS.
• KEEP SAFETY DEVICES (GUARDS, SHIELDS, SWITCHES, ETC.)
IN PLACE AND WORKING.
• REMOVE OBJECTS THAT COULD BE THROWN BY THE BLADE.
• DO NOT MOW WHEN CHILDREN OR OTHERS ARE AROUND.
• NEVER CARRY CHILDREN EVEN WITH BLADES OFF.
• LOOK DOWN AND BEHIND BEFORE AND WHILE BACKING.
• AVOID SUDDEN TURNS.
• IF YOU CANNOT BACK UP A HILL, DO NOT OPERATE ON IT.
• GO UP AND DOWN SLOPES, NOT ACROSS.
• IF MACHINE STOPS GOING UPHILL, STOP BLADE AND
BACK DOWN SLOWLY.
• BE SURE BLADE(S) AND ENGINE ARE STOPPED BEFORE
PLACING HANDS OR FEET NEAR BLADE(S).
4
5
3
OPERATING ON SLOPES
CAN BE DANGEROUS
6
ROTATING BLADES CUT
OFF ARMS AND LEGS
9
7
SEE OPERATOR'S MANUAL. IF YOU
STOP MOWER WHEN CHILDREN
CANNOT BACK-UP
DRIVE ON IT.
A
HILL, DO NOT
ARE NEAR.
NO RIDERS
8
• WHEN LEAVING MACHINE, SHUT OFF ENGINE, REMOVE KEY,
AND SET PARKING BRAKE.
—
THEY FALL OFF.
DO NOT TOW TRACTOR! DAMAGE MAY RESULT TO TRANSMISSION.
1722814-02
5
6
10
12
11
12
14
18
19
11
13
14
18
15
17
16
44" and 50"
mower decks
19
19
14
15
54" mower deck
18
17
16
13
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
40
TP 400-3821-00-CQ-N
Decals Group - Safety & Common
REF NO.
PART NO.
1722806
1718025
1722814
1723175
1723143
1723410
1720454
1720456
1723296
*
QTY.
1
DESCRIPTION
1
2
DECAL, Ignition Switch Symbols, White/Black
DECAL, Automatic Control Traction
DECAL, Tunnel Cover, Danger Slopes/Blades
DECAL, Tunnel Cover, Danger Slopes/Blades, (Export)
DECAL, Lift Lever Symbols
1
3
1
3
1
4
1
5
1
DECAL, Drive Belts, Mower Blades
DECAL, Touch Up Paint, Deep Orange
DECAL, Touch-Up Paint, Red
6
1
6
1
7
2
DECAL, Protective Sticker
8
1
LABEL, Decibel, Power Mass
9
*
1
DECAL, I.D. Plate
10
11
12
13
14
15
16
17
17
17
18
19
*
1
DECAL, Patent
1708927
1723160
*
1
DECAL, USA Logo Stars & Stripe
DECAL, Transmission Release Valve
DECAL, I.D. Plate
1
1
1704276
1722771
*
1
DECAL, Danger Do Not Put Hands/Feet in Mower
DECAL, Free Floating Mower, Silver
DECAL, OPEI Certified
1
1
1722789
1722790
1722791
1704277
1721197
1
DECAL, 44", Silver on Black with Stripe
DECAL, 50", Silver on Black with Stripe
DECAL, 54", Silver on Black with Stripe
DECAL, Danger Do Not Operate Without Deflector
DECAL, Height of Cut
1
1
1
1
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694368 - YT1644
1694369 - YT1850
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
41
TP 400-3821-00-CQ-N
44" & 50" Mower Deck - Clutch & Support
984271C
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
Movable Idler
Pulley
Engine
Pulley
3
4
5
6
4
7
8
10
11
5
7
8
Arbor Drive
Pulley
A
9
1
Arbor Drive
Pulley
7
9
2
12
11
13
15
7
16
14
Arbor Drive
Pulley
7
A
Grease
Movable
Idler Pulley
11
17
Arbor Drive
Pulley
20
14
19
11
18
A
25
24
7
Insert Must
Face Out
26
23
22
Mount Hitch Assembly
using upper holes
18
27
21
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
42
TP 400-3821-00-CQ-N
44" & 50" Mower Deck - Clutch & Support
REF NO.
PART NO.
1601672
1707740
1703836
1721532
1665835
1916950
1916965
1677135
1924940
1666294
1685150
1960339
1676148
1715435
1674669
912808
QTY.
1
DESCRIPTION
1
1
V-BELT, Mower Drive, (for 44" Mower Decks Only)
V-BELT, Mower Drive, (for 50" Mower Decks Only)
V-BELT, Arbor Drive, (for 50" Mower Decks Only)
V-BELT, Arbor Drive, (for 44" Mower Decks Only)
GRIP, Lever
1
2
1
2
1
3
1
4
2
NUT, Hex, 3/8-16
5
2
WASHER, Lock, 3/8
6
1
BELT STOP, Idler
7
14
2
WASHER, 3/8
8
SPACER, 25/64 x 21/32 x 7/16, Powder Metal
PULLEY, Idler, (Includes Ref. No. 8)
NUT, Hex Flange, 3/8-16, MAC Lock Large, Black
BUSHING, 5/8 x 3/4 x 13/32, Powder Metal
SPRING
9
2
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
1
4
1
2
SPACER, 25/64 x 5/8 x 1-1/8, Case Hardened
GREASE FITTING
2
1704658
1960315
1718561
1924356
1931352
1656936
1923938
1921969
157081
1
LEVER ASSEMBLY, Idler, (Includes Ref. Nos. 11 & 14)
CARRIAGE BOLT, 3/8-16 x 2
LEVER ASSEMBLY, Idler Arm, (Includes Ref. Nos. 11 & 14)
WASHER, 3/8, Black
1
1
2
1
CARRIAGE BOLT, 3/8-16 x 1-1/2
SPRING
1
1
CAPSCREW, Hex Head, 3/8-16 x 3-1/2
CAPSCREW, Hex Head, 3/8-16 x 1-1/2
SPACER, 3/8 x 3/4 x 1/2
2
2
960641
2
NUT, Hex Aluminum Insert Lock, 3/8-16
SPRING
156302
1
1707432
1715759
1
HITCH ASSEMBLY
1
ROD, Latch
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
43
TP 400-3821-00-CQ-N
44" & 50" Mower Decks - Housing, Arbors & Blades
5971
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
Torque nuts
to 50-70 ft. lbs.
(67-95 Nm.)
1
2
3
5
4
5
40
6
7
Apply gasket former to this surface
if foam gasket is not used.
Fill arbors with multipurpose grease
after gasket former has cured.
8
9
37
36
10
11
12
39
32
31
37
36
38
13
16
14
35
34
15
30
33
17
18
32
16
31
28
29
Note: Plug holes
outside footrest with
Ref. Nos. 17 & 18
as required.
27
Torque arbor capscrews
to 14-18 ft. lbs.
(19-24 Nm)
16
19
26
20
21
22
23
24
25
Torque screws
to 45-55 ft. lbs.
(61-75 Nm)
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
44
TP 400-3821-00-CQ-N
44" & 50" Mower Decks - Housing, Arbors & Blades
REF NO.
PART NO.
1714419
1713675
1713161
1713158
1713098
1713533
1655729
108202
QTY.
DESCRIPTION
1
2
3
6
1
1
3
1
3
3
3
3
3
3
3
3
1
26
1
NUT, Hex Flange, 9/16-18
WASHER, Bellevilled, 9/16
PULLEY
3
4
HUB, Double Pulley
5
PULLEY
6
HUB, Double Pulley
7
COVER, Arbor Housing
BEARING, Ball, 3/4 x 1-3/4 x 5/8
SPACER, 21/32 x 3/4 x 5/8
SPACER, 11/16 x 5/32 x 2-11/16
BEARING, Ball, 11/16 x 1-9/16 x 15/32
GASKET, Foam
8
9
1715724
1715723
1705897
1707335
1713338
1704314
1720560
1664847
1924856
10
11
12
13
14
15
16
17
ARBOR HOUSING ASSEMBLY, (Includes Ref. No. 14)
FITTING, Grease
COVER, Arbor
CAPSCREW, Hex Head Taptite, 5/16-18 x 3/4
CAPSCREW, Hex Washer Head, 5/16-18 x 1/2, Black, (for 44" Mower
Deck Only)
18
19
20
21
22
22
23
24
25
26
27
27
27
27
28
29
30
31
32
33
34
35
36
1931277
1713619
1713612
1713196
1704100
1708229
1713089
1656916
923471
1
3
1
3
3
3
3
3
3
2
1
1
1
1
1
2
1
2
2
1
1
1
2
NUT, Hex Flange, 5/16, (for 44" Mower Deck Only)
WASHER, Bellevilled, 9/16, Black
SHAFT, Arbor (LH)
SHIELD, Grass, Lower
BLADE, Mower, 16-1/8 (for 44" Decks)
BLADE, Mower, 18-1/8 (for 50" Decks)
WASHER, Hex, 11/16 x 2
WASHER, Spring 15/32, Black
CAPSCREW, Hex Head, 7/16-14 x 1
SHAFT, Arbor (Center & RH)
MOWER HOUSING ASSEMBLY, 44" Mower (Orange)
MOWER HOUSING ASSEMBLY, 50" Mower (Orange)
MOWER HOUSING ASSEMBLY, 44" Mower (Red)
MOWER HOUSING ASSEMBLY, 50" Mower (Red)
COVER, Arbor
1713195
1685411
1685495
41685411
41685495
1703601
1931318
1705115
1960518
1960353
1704873
1919326
1705080
1916964
CARRIAGE BOLT, 1/4-20 x 7/8
PLUG, Hole
NUT, Push
WASHER, 1/4, Black
CLAMP
WASHER, 5/16, Black
SPRING
WASHER, Lock, 1/4
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
45
TP 400-3821-00-CQ-N
44" & 50" Mower Decks - Housing, Arbors & Blades
5971
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
Torque nuts
to 50-70 ft. lbs.
(67-95 Nm.)
1
2
3
5
4
5
40
6
7
Apply gasket former to this surface
if foam gasket is not used.
Fill arbors with multipurpose grease
after gasket former has cured.
8
9
37
36
10
11
12
39
32
31
37
36
38
13
16
14
35
34
15
30
33
17
18
32
16
31
28
29
Note: Plug holes
outside footrest with
Ref. Nos. 17 & 18
as required.
27
Torque arbor capscrews
to 14-18 ft. lbs.
(19-24 Nm)
16
19
26
20
21
22
23
24
25
Torque screws
to 45-55 ft. lbs.
(61-75 Nm)
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
46
TP 400-3821-00-CQ-N
44" & 50" Mower Decks - Housing, Arbors & Blades
REF NO.
PART NO.
1916622
1706709
1705449
1713197
QTY.
DESCRIPTION
37
38
39
40
2
1
1
2
NUT, Hex, 1/4-20
ROD, Deflector, Front
DEFLECTOR, Plastic
HUB, Pulley, Center & RH
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
47
TP 400-3821-00-CQ-N
44" Mower Deck - Height Adjustment & Roller Bar
985974
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
Insert Must
Face Out
10
49
48
11
10
3
11
10
4
11
5
6
10
7
11
10
8
47
11
9
10
9
11
GREASE
8
10
14
10
11
10
12
45
13
44
46
38
15
16
17
34
43
32
31
21
42
41
18
33
40
36
35
39
37
30
GREASE
19
38
37
3
20
22
23
29
28
21
27
Note: Attach mower levelling adjustment rod
(Ref 24) to bottom hole in mower hitch assembly.
{See 44" & 50" Mower Deck - Belt, Pulley &
Hitch group.}
26
24
13
25
3
Insert Must
Face Out
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
48
TP 400-3821-00-CQ-N
44" Mower Deck - Height Adjustment & Roller Bar
REF NO.
1
PART NO.
1685443
1704082
960641
QTY.
1
DESCRIPTION
SHAFT ASSEMBLY, Roller, 44", (Includes Ref. Nos. 7 & 9)
NUT, Adjuster
2
1
3
3
NUT, Hex Aluminum Insert Lock, 3/8-16
SLIDE
4
1677507
1924361
172622
1
5
1
WASHER, Plain, 1/2
6
1
BOLT, Shoulder, 3/8-16
7
1602946
1722036
1960520
1924366
1668513
1704074
1930644
1664847
1924940
1722747
1665374
1931352
1723407
1930570
1919381
1707514
1919438
1704093
1706644
1922606
1722748
1960020
1960373
1704080
1931202
1704114
1704097
1704086
916001
2
SPACER, 25/64 x 13/16 x 13/16, Steel, Black
ROLLER, Rounded, 2-1/2 Long
NUT, Push
8
2
9
2
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
10
7
WASHER, Plain, 1-1/4
ROLLER
1
BAR, Roller
2
NUT, Hex, Flange, Lock, 1/2-13
CAPSCREW, Hex Head Taptite, 5/16 -18 x 3/4
WASHER, 3/8
5
3
1
UP-STOP, 6-1/4 High, Black
STRAP, Mower Arm Assembly
CARRIAGE BOLT, 3/8-16 x 1-1/2
ARM ASSEMBLY, Mower
CAPSCREW, Hex Head, 5/16-18 x 1 1/2, Black
WASHER, 5/16, Black
3
1
1
2
5
2
CHAIN, 3 Link, 4-1/2 Long
NUT, Hex Lock ESNA Light, 5/16-18, Black
ROD, Adjustment
2
1
1
SPACER, 3/8 x 3/4 x 15/16
CAPSCREW, Hex Head, 3/8-16 x 1-3/4
BRACKET, Up-Stop, 6" Long
WASHER, 5/8
1
1
1
2
CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 1, Black
PLATE, Mower Support
1
2
CAPSCREW, Hex Head Taptite, 5/16-18 x 1-1/4
INDICATOR, Cutting Height
WASHER, Detent
1
1
1
TRUNNION
1
PIN, Roll, 1
1704081
1913744
1960170
118053
1
TRUNNION
2
NUT, Hex, Jam, 1/2-13
3
WASHER, 33/64
1
PIN, Clevis
1918452
1
PIN, Cotter, 1, Black
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
49
TP 400-3821-00-CQ-N
44" Mower Deck - Height Adjustment & Roller Bar
985974
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
Insert Must
Face Out
10
49
48
11
10
3
11
10
4
11
5
6
10
7
11
10
8
47
11
9
10
9
11
GREASE
8
10
14
10
11
10
12
45
13
44
46
38
15
16
17
34
43
32
31
21
42
41
18
33
40
36
35
39
37
30
GREASE
19
38
37
3
20
22
23
29
28
21
27
Note: Attach mower levelling adjustment rod
(Ref 24) to bottom hole in mower hitch assembly.
{See 44" & 50" Mower Deck - Belt, Pulley &
Hitch group.}
26
24
13
25
3
Insert Must
Face Out
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
50
TP 400-3821-00-CQ-N
44" Mower Deck - Height Adjustment & Roller Bar
REF NO.
PART NO.
1917372
1917356
1704116
1704083
1921977
1704087
1719901
1714084
1960093
QTY.
DESCRIPTION
41
42
43
44
45
46
47
48
49
2
2
1
1
2
1
1
1
1
NUT, Hex, 5/16-18
WASHER, Lock, 5/16
BRACKET, Cutting Height
ARM, Rear, Mower, RH
CAPSCREW, Hex Head, 5/16-18 x 1-1/4
TRUNNION, Threaded
CRANK, Cutting Height
KNOB, Height Crank
PAL NUT
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694371 - 44" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
51
TP 400-3821-00-CQ-N
50" Mower Deck - Height Adjustment & Roller Bar
986020
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
Insert Must
Face Out
7
45
11
11
11
3
8
4
5
6
11
44
43
7
11
9
11
10
10
11
GREASE
9
11
7
7
8
12
7
41
40
13
42
34
15
14
GREASE
30
39
28
19
38
37
27
16
29
31
36
32
35
33
26
34
17
33
3
18
20
21
19
Note: Attach mower levelling adjustment rod
(Ref 22) to bottom hole in mower hitch assembly.
{See 44" & 50" Mower Deck - Belt, Pulley &
Hitch group.}
25
22
24
23
3
Insert Must
Face Out
The above parts group applies to the following Mfg. Nos.:
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
52
TP 400-3821-00-CQ-N
50" Mower Deck - Height Adjustment & Roller Bar
REF NO.
1
PART NO.
1686687
1704082
960641
QTY.
1
1
3
1
1
1
8
3
2
2
8
1
2
3
6
1
1
2
5
2
2
1
1
1
1
1
2
1
1
1
1
1
2
1
1
1
2
2
1
1
DESCRIPTION
SHAFT ASSEMBLY, Roller, 50", (Includes Ref. No. 10)
NUT, Adjuster
2
3
NUT, Hex Aluminum Insert Lock, 3/8-16
SLIDE
4
1677507
1924361
172622
5
WASHER, Plain, 1/2
6
BOLT, Shoulder, 3/8-16
WASHER, Plain, 1 1/4
7
1924366
1709195
1722036
1960520
1668513
1704074
1930644
1665374
1664847
1931352
1718828
1930570
1919381
1708088
1919438
1722995
1706644
1924940
1922606
1704080
1931202
1704114
1704097
1704086
916001
8
SPACER, 21/32 x 5/32 x 5/8
ROLLER, Rounded End
NUT, Push
9
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
ROLLER
BAR, Roller
NUT, Hex Flange, 2 Way Lock, 1/2-13
STRAP, Mower Arm Assembly
CAPSCREW, Hex Head Taptite, 5/16 -18 x 3/4
CARRIAGE BOLT, 3/8-16 x 1-1/2
ARM ASSEMBLY, Mower
CAPSCREW, Hex Head, 5/16-18 x 1-1/4, G8, 1/2 Thread
WASHER, 5/16, Black
CHAIN, 4 Link, 6 3/32 Long
NUT, Hex Lock ESNA Light, 5/16-18, Black
ROD, Adjustment
SPACER, 3/8 x 3/4 x 15/16
WASHER, 3/8
CAPSCREW, Hex Head, 3/8-16 x 1-3/4
PLATE, Mower Support
CAPSCREW, Hex Head Taptite, 5/16-18 x 1-1/4
INDICATOR, Cutting Height
WASHER, Detent
TRUNNION
PIN, Roll, 1
1706645
1915726
1960170
118053
TRUNNION
NUT, Hex, Jam, 1/2-13
WASHER, 11/32
PIN, Clevis
1918452
1917372
1917356
1704116
1704083
PIN, Cotter, 1, Black
NUT, Hex, 5/16-18
WASHER, Lock, 5/16
BRACKET, Cutting Height
ARM, Rear, Mower, RH
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
53
TP 400-3821-00-CQ-N
50" Mower Deck - Height Adjustment & Roller Bar
986020
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
1
2
Insert Must
Face Out
7
45
11
11
11
3
8
4
5
6
11
44
43
7
11
9
11
10
10
11
GREASE
9
11
7
7
8
12
7
41
40
13
42
34
15
14
GREASE
30
39
28
19
38
37
27
16
29
31
36
32
35
33
26
34
17
33
3
18
20
21
19
Note: Attach mower levelling adjustment rod
(Ref 22) to bottom hole in mower hitch assembly.
{See 44" & 50" Mower Deck - Belt, Pulley &
Hitch group.}
25
22
24
23
3
Insert Must
Face Out
The above parts group applies to the following Mfg. Nos.:
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
54
TP 400-3821-00-CQ-N
50" Mower Deck - Height Adjustment & Roller Bar
REF NO.
PART NO.
1921977
1704087
1719901
1714084
1960093
QTY.
DESCRIPTION
41
42
43
44
45
2
1
1
1
1
CAPSCREW, Hex Head, 5/16-18 x 1-1/4
TRUNNION, Threaded
CRANK, Cutting Height
KNOB, Height Crank
PAL NUT
Footnotes
The above parts group applies to the following Mfg. Nos.:
1694372 - 50" Mower
© Copyright 2003 Simplicity Manufacturing, Inc. All Rights Reserved.
55
TP 400-3821-00-CQ-N
Hardware Identification & Torque Specifications
Common Hardware Types
Torque Specification Chart
FOR STANDARD MACHINE HARDWARE (Tolerance 20%)
Hex Head Capscrew
Washer
No
Marks
Hardware
Lockwasher
Grade
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”
MANUFACTURING, INC.
© Copyright 2003 Simplicity Manufacturing, Inc.
All Rights Reserved. Printed In USA.
500 N. Spring Street / PO Box 997
Port Washington, WI 53074-0997 USA
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