Snapper YT Series User manual

Parts Manual
Rev. 02/2003
YT Series
Lawn Tractors & Mower Decks
TP 400-3821-00-CQ-N
Mf
g
. No. Descri
p
tion
1
6
HP Tractors
1694368 YT1644, 16HP Hydro
Mf
g
. No. Descri
p
tion
1
8
HP Tractors
1694369 YT1850, 18HP Hydro
Mf
g
. No. Descri
p
tion
Mower Decks
1694371 44" Mower Deck
1694372 50" Mower Deck

Table Of Content
s
Torque Specification Chart ..................................................................... Inside Back Cover
TRACTOR / MOWER DECK COMPONENTS PAGES
Frame Group ......................................................................................................................... 2
Steering Group - Manual Steering ......................................................................................... 6
Engine & Electric Clutch Group - 16HP Briggs & Stratton, Vanguard ................................... 8
Transmission Group .............................................................................................................. 10
Transmission SERVICE PARTS - Tuff Torq K-66L ............................................................... 14
Lift Group - Manual Lift .......................................................................................................... 20
Controls Group ...................................................................................................................... 22
Cruise Control Group ............................................................................................................ 26
Electrical Group ..................................................................................................................... 28
Hood, Grill & Dash Group ...................................................................................................... 32
Seat & Seat Deck Group ....................................................................................................... 34
Wheels & Tires Group ...........................................................................................................36
Decals Group - Brand & Model .............................................................................................. 38
Decals Group - Safety & Common ........................................................................................ 40
44" & 50" Mower Deck - Clutch & Support ............................................................................ 42
44" & 50" Mower Decks - Housing, Arbors & Blades ............................................................. 44
44" Mower Deck - Height Adjustment & Roller Bar ............................................................... 48
50" Mower Deck - Height Adjustment & Roller Bar ............................................................... 52

Frame Group
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
Torque to
150 ft. lbs.
(202 Nm)
Torque to
150 ft. lbs.
(202 Nm)
Torque to
22-40 ft. lbs.
(30-54 Nm)
Service Kit
1686985
Torque to
55-60 ft. lbs.
(74-81 Nm)
1411
15
19
17
16
21
22
28
26
30
23
29
25
27
24
31
32
33
34
1
7
5
9
2
8
4
6
3
10
16
13
1718
11
11
21
11
29
12
20
21
21
35
36
37
38
39
40
41
42
43
43
43
985881
The above parts group applies to the following Mfg. Nos.:
2003 2 © Copyright Simplicity Manufacturing, Inc. All Rights Reserved.
1694368 - YT1644
1694369 - YT1850
TP 400-3821-00-CQ-N

PART NO. DESCRIPTIONREF NO. QTY.
Frame Group
Footnotes
1 1721748 1 TOWER & SUPPORT ASSEMBLY
2 1923683 4 CAPSCREW, Hex Washer Head Taptite, 3/8-16 x 3/4
3 1960541 4 CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 3/4
4 1723528 1 SUPPORT, Seat Deck
5 1928352 2 NUT, Hex Flange 3/8-16 Whiz Lock, Large
6 1930644 2 NUT, Hex Flange Two-Way Lock, 1/2-13
7 1722602 1 BACKPLATE,
8 1923114 2 CAPSCREW, Hex Head 1/2-13 x 1, Black
9 1921210 2 CAPSCREW, Hex Head 3/8-16 x 1, Black
10 1721572 1 FRAME ASSEMBLY, Front & Rear
11 1930645 7 NUT, Hex Flange Two-Way Lock, 3/8-16
12 1922755 1 WASHER, 3/8, Black
13 1960103 2 WASHER, 3/8, Black
14 1722541 1 LINK, Drag
15 1919262 1 NUT, Hex Jam 1/2-20
16 1702779 1 JOINT, Ball
17 1708236 1 SPACER, 3/8 x 1/2 x 5/8
18 1931350 2 CARRIAGE BOLT, 3/8-16 x 1
19 1722626 1 ROD, Tie
20 1611705 2 SPACER, 25/64 x 5/8 x 5/16, Powder Metal
21 1721682 6 BUSHING, 31/32 x 1-1/4 x 3/4, Powder Metal
22 1930650 2 NUT, Hex Flange Two-Way Lock, 7/16-14
23 1722200 1 AXLE ASSEMBLY w/LH Spindle, (Includes Ref. Nos, 21, 35, 36, 37 & 43)
24 1931352 1 CARRIAGE BOLT, 3/8-16 x 1-1/2
25 1721752 1 SPACER, 11/16 x 21/32 x 2 3/32
26 1927531 2 CAPSCREW, Hex Head, 7/16-14 x 2 G8
27 1721918 1 HOOK, "J"
28 960645 1 CAPSCREW, Hex Head, 5/8-11 x 3-1/2
29 1960035 2 WASHER, 5/8
30 1933260 4 CAPSCREW, Hex Flange Whiz Lock, 3/8-16 x 3/4
31 1721805 1 BUMPER, Black
31 1723502 1 BUMPER, Chrome
32 1960086 4 SCREW, Truss Head Torque Drive, 5/16-18 x 7/8
33 960646 1 NUT, Hex Flange Two-Way Lock, 5/8-11
34 1722212 1 PLATE
35 1919394 1 WASHER, 1
36 932577 1 RETIANING RING
37 1722199 1 SPINDLE, RH
38 923485 1 CAPSCREW, 3/8-16 x 7/8, GR8
39 1663151 1 LOCKWASHER, 3/8
The above parts group applies to the following Mfg. Nos.:
2003 3 © Copyright Simplicity Manufacturing, Inc. All Rights Reserved.
1694368 - YT1644
1694369 - YT1850
TP 400-3821-00-CQ-N

Frame Group
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
Torque to
150 ft. lbs.
(202 Nm)
Torque to
150 ft. lbs.
(202 Nm)
Torque to
22-40 ft. lbs.
(30-54 Nm)
Service Kit
1686985
Torque to
55-60 ft. lbs.
(74-81 Nm)
1411
15
19
17
16
21
22
28
26
30
23
29
25
27
24
31
32
33
34
1
7
5
9
2
8
4
6
3
10
16
13
1718
11
11
21
11
29
12
20
21
21
35
36
37
38
39
40
41
42
43
43
43
985881
The above parts group applies to the following Mfg. Nos.:
2003 4 © Copyright Simplicity Manufacturing, Inc. All Rights Reserved.
1694368 - YT1644
1694369 - YT1850
TP 400-3821-00-CQ-N

PART NO. DESCRIPTIONREF NO. QTY.
Frame Group
Footnotes
40 1725112 1 HUB & ARM ASSEMBLY
41 930671 1 KEY, WOodruff
42 1724264 1 SPINDLE, LH
43 1704314 3 FITTING, Lube
The above parts group applies to the following Mfg. Nos.:
2003 5 © Copyright Simplicity Manufacturing, Inc. All Rights Reserved.
1694368 - YT1644
1694369 - YT1850
TP 400-3821-00-CQ-N

Steering Group - Manual Steering
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
Torque to
36-44 ft. lbs.
or 48-60 Nm
Steering cap snaps
over steering wheel.
Use washers
as required.
Torque to
36-44 ft. lbs.
or 48-60 Nm
Bearing mounts below
frame. Slide pinion on
steering shaft into gear
before tightening nuts.
18
21
14
7
11
10
13
15
12
1
6
19
2
20
4
8
3
17
5
6
5
9
16
5
15
986283
The above parts group applies to the following Mfg. Nos.:
2003 6 © Copyright Simplicity Manufacturing, Inc. All Rights Reserved.
1694368 - YT1644
1694369 - YT1850
TP 400-3821-00-CQ-N

PART NO. DESCRIPTIONREF NO. QTY.
Steering Group - Manual Steering
Footnotes
1 1722318 1 STEERING WHEEL, Straight, Shaft
2 1725024 1 CAP, Steering Wheel, Plain
3 1960540 1 PIN, Spring, 5/16 x 2-1/2
4 1722749 1 COVER, Rubber, Upper Steering Shaft
5 1960114 5 WASHER, 3/4
6 176440 2 BUSHING, 15/32 x 7/8 x 7/8, Nylon
7 928372 2 NUT, Hex KEPS 1/4-20
8 1721736 1 PLATE, Mounting Steering
9 1960518 2 NUT, Push
10 1931317 2 CARRIAGE BOLT, 1/4-20 x 3/4
11 1722385 1 GEAR & SHAFT ASSEMBLY, Steering
12 1960032 1 CAPSCREW, Hex Head, 3/8-16 x 1-1/4, Black
13 1930645 1 NUT, Hex Flange Two-Way Lock, 3/8-16
14 1664847 2 CAPSCREW, Hex Washer Head Taptite, 5/16-18 x 3/4
15 1721626 1 SHAFT & PINION ASSEMBLY, Steering Manual
16 1611710 1 RING, Clipring Extension
17 1722459 1 BEARING, 3/4 x 1-11/16 x 13/16, 3" Long Housing
18 1722461 1 SPACER, 3/4 x 1-1/16 x 3/8, Powder Metal
19 1931211 2 NUT, Hex Flange Whiz Lock, 3/8-16, Small
20 1933260 2 CAPSCREW, Hex Whiz Lock Flange, 3/8-16 x 3/4, Black
21 1919314 1 PIN, Cotter, 1-1/4, Black
The above parts group applies to the following Mfg. Nos.:
2003 7 © Copyright Simplicity Manufacturing, Inc. All Rights Reserved.
1694368 - YT1644
1694369 - YT1850
TP 400-3821-00-CQ-N

Engine & Electric Clutch Group - 16HP Briggs & Stratton, Vanguard
NOTE: Unless noted otherwise,
use the standard hardware torque
specification chart.
15
12
17
10
16
14
11
13
18
24
23
19
25
21
20
1
5
9
2
4
6
3
7
8
22
11
23
27
30
29
31
10
28
22
26
32
26
7
Engine manufactures
gasket & hardware.
Torque to 18 ft. lbs.
(25 Nm)
Tie clutch wire
to spring away
from pulley.
Torque to
45-50 ft. lbs.
(61-68 Nm)
Torque to
19-23 ft. lbs.
(26-31 Nm)
Note:
Orentation
of All Keys
B&S Vandguard Twin:
Tie cables to Left
Hand side of shield.
Engine Ground
Wire
Position pulley
chamfer side up.
985902
The above parts group applies to the following Mfg. Nos.:
2003 8 © Copyright Simplicity Manufacturing, Inc. All Rights Reserved.
1694368 - YT1644
1694369 - YT1850
TP 400-3821-00-CQ-N