SCHEMATIC
TRACTOR - - MODEL NUMBER Q12538C
A
AMMETER
(OPTIONAL)
RED
B
G
L
IGNITION
SWITCH
BLACK
RED
BLACK
BATTERY
RED
FUSE
WHITE
RED
M
STARTER
BLACK
SOLENOID
S
M
A1
CLUTCH / BRAKE
(PEDAL UP)
WHITE
A2
SEAT SWITCH
(NOT OCCUPIED)
BLACK
GROUNDING
CONNECTOR
SPARK
PLUG
GAP
(2 PLUGS ON
TWIN CYL. ENGINES)
BLACK
BLUE
BLACK
BLACK
HOUR
METER
(OPTIONAL)
FUEL
LINE
BLACK
WHITE
ATT'MENT CLUTCH
(CLUTCH OFF)
BLACK
IGNITION
UNIT
IGNITION SWITCH
CIRCUITPOSITION
OFF
M+G+A1
B+A1RUN/LIGHT
B+A1RUN
B + S + A1START
“MAKE”
NONE
A2+L
NONE
NONE
28 VOLTS AC MIN. @ 3600 RPM
(CHARGING SYSTEM DISCONNECTED)
DIODE
14 VOLTS AC MIN. @ 3600 RPM (LIGHTS OFF)
FUEL SHUT-OFF SOLENOID
(IF SO EQUIPPED)
ORANGE
CHARGING SYSTEM OUTPUT
3 AMP DC @ 3600 RPM
RED
LIGHTING SYSTEM OUTPUT
5 AMP AC @ 3600 RPM
NOTE
YOUR TRACTOR IS
EQUIPPED WITH A SPECIAL
BROWN
ALTERNATOR SYSTEM.
THE LIGHTS ARE NOT
CONNECTED TO THE
BATTERY, BUT HAVE THEIR
OWN ELECTRICAL SOURCE.
BECAUSE OF THIS, THE
BRIGHTNESS OF THE LIGHTS
WILL CHANGE WITH ENGINE
SPEED. AT IDLE THE LIGHTS
WILL DIM. AS THE ENGINE IS
SPEEDED UP, THE LIGHTS
NON-REMOVABLE
CONNECTIONS
WILL BECOME THEIR BRIGHTEST.
REMOVABLE
CONNECTIONS
WIRING INSULATED CLIPS
NOTE: IF WIRING INSULATED CLIPS WERE REMOVED FOR
SERVICING OF UNIT, THEY SHOULD BE REPLACED TO
PROPERLY SECURE YOUR WIRING.
ALTERNATOR
BLACK
HEADLIGHTS
27
REPAIR PARTS
ELECTRICAL
42
24
TRACTOR - - MODEL NUMBER Q12538C
2221
41
33
30
27
43
27
25
27
27
26
40
16
16
48
52
8
28
27
2
1
29
28
REPAIR PARTS
ELECTRICAL
TRACTOR - - MODEL NUMBER Q12538C
KEY PART
NO. NO. DESCRIPTION
1 144925 Battery 12 Volt 25 Amp
2 74760412 Bolt Hex Hd 1/4-20unc X 3/4
8 156417 Case Battery Mech Hiinge
16 153664 Switch Interlock Push-In
21 166181 Harness Asm Light W/4152j
22 4152J Bulb Light #1156
24 4799J Cable Battery 6 Ga 11"red
25 146147 Cable Battery
26 166180 Fuse 15 AMP
27 73510400 Nut Keps Hex 1/4-20 Unc
28 4207J Cable Ground 6 Ga 12"black
29 121305X Switch Plunger Nc Gray
30 163968 Switch Ign
33 140401 Key Ign
40 170217 Harness Ign
41 71110408 Bolt Blk Fin Hex 1/4-20
42 131563 Cover Terminal Red
43 145673 Solenoid
48 140844 Adapter Ammeter
52 141940 Protection Wire Loop
NOTE: All component dimensions given in U. S.
inches 1 inch = 25.4 mm.
29
REPAIR PARTS
CHASSIS
TRACTOR - - MODEL NUMBER Q12538C
212
208
26
30
31
25
17
24
29
18
24
25
26
3
11
209
9
15
3
5
5
209
8
3
58
53
12
51
28
54
52
55
57
33
206
26
6
16
3
35
37
10
2
38
3
3
35
38
3
34
26
3
1
13
145
37
208
30
REPAIR PARTS
CHASSIS
TRACTOR - - MODEL NUMBER Q12538C
KEY PART
NO. NO. DESCRIPTION
1 169831 Chassis
2 169061 Drawbar, Stretch
3 17060612 Screw 3/8-16 x 3/4
5 155272 Bumper, Hood/Dash
6 155924X014 Saddle Silkscreen Flt Sdl
8 155138 Clip Retainer Slide-On
9 168347X011 Dash
10 72140608 Bolt, Carriage 3/8-16 x 1
11 155927 Panel Dash LH
12 145660 Clip Tinnerman Grille P.L
13 172107X010 Panel Slkscr Dash RH
15 74180512 Screw Mach TRHD 5/16-18uncx3/4
16 73510500 Nut Keps 5/16-18 Unc
17 159639X602 Hood
18 126938X Bumper Hood
24 74780616 Bolt Fin Hex 3/8-16unc X 1 Gr. 5
25 19131312 Washer 13/32 X 13/16 X 12 Ga
26 73800600 Nut Lock Hex w/Ins 3/8-16 Unc
28 140434 Grille/Lens Asm.
29 140273X599 Lens Grille Private Label
30 169465X602 Fender
31 136619 Bracket Fender Repl 109873x
33 105476X602 Footrest Pnt LH Perf
34 105475X602 Footrest Pnt RH Perf
35 72110606 Bolt Rdhd Sht Sqnk 3/8-16 X3/4
37 17490508 Screw Thdrol 5/16-18 x 1/2 TYT
38 169834 Bracket Asm. Pivot Mower Rear
51 73800400 Nut Lock W/Insert 1/4-20unc
52 19091416 Washer 9/32 x 7/8x16 Ga.
53 144697 Bracket Grille Lh
54 161464 Screw Hex 8-18 x 7/8
55 144696 Bracket Grille Rh
57 74780412 Bolt Fin Hex 1/4-20 unc x .75
58 150127 Duct Air Engine PL/LT
145 156524 Rod Pivot Chassis/Hood
206 170165 Bolt Shoulder 5/16-18
208 17670608 Screw Thdrol 3/8-16 x 1/2
209 17000612 Screw Hex Wsh Thdrol 3/8-16
212 156229 Insert Lens Reflect
--- 5479J Plug Button Blk 359 Dia Choke
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm.
31
REPAIR PARTS
DRIVE
57
TRACTOR - - MODEL NUMBER Q12538C
51
51
10
13
14
112
77
52
52
21
61
63
8
51
47
50
26
51
72
70
116
55
202
150
48
151
51
12
7
12
11
18
170
30
32
4
3
6
6
61
113
51
32
30
52
59
66
61
42
56
41
42
35
38
36
40
42
39
37
34
5
18
6
62
65
64
27
49
15
24
19
25
2
77
1
75
74
78
29
76
28
22
26
27
36
35
53
32
REPAIR PARTS
DRIVE
TRACTOR - - MODEL NUMBER Q12538C
KEY PART
NO. NO. DESCRIPTION
1 - - - - - - - Transaxle
Dana Model D4360-139
(Order parts from transaxle
manufacturer)
2 146682 Spring Return Brake
3 123666X Pulley Transaxle 18"tires
4 12000028 Ring Retainer # 5100-62
5 121520X Strap Torque 30 Degrees RH
6 17060512 Screw 5/16-18 x 3/4
7 162240 Plate Rod Shift T/a
8 131679 Rod Shifter Blk
10 76020416 Pin Cotter 1/8 X 1 Cad
11 105701X Washer Plate Shf 388 Sq Hole
12 19151216 Washer 15/32 X 3/4 X 16 Ga
13 74550412 Bolt 1/4-28 unf Gr. 8 w/Patch
14 10040400 Washer Lock Hvy Helical 1/4
15 74490544 Bolt Hex Flg.Hd. 5/16-18 x Gr.5
18 74780616 Bolt Fin Hex 3/8-16unc X 1 Gr. 5
19 73800600 Nut lock Hex w/Ins 3/8-16 Unc
21 106933X Knob Rd 1/2-13 Plstc Thds Blk
22 130804 Rod Brake LT
24 73350600 Nut Hex Jam 3/8-16 Unc
25 106888X Spring Rod Brake 2 00 Zinc
26 19131016 Washer 13/32 X 5/8 X 16 Ga
27 76020412 Pin Cotter 1/8 X 3/4 Cad
28 145204 Rod Brake Parking LT/YT
29 71673 Cap Brake Parking Black
30 130807 Bracket Transmission
32 74760512 Bolt Fin Hex 5/16-18 x 3/4
34 155071 Shaft Asm Pedal Foot
35 120183X Bearing Nylon Blk 629 Id
36 19211616 Washer 21/32 X 1 X 16 Ga
37 1572H Pin Roll 3/16 X 1"
38 131494 Pulley Idler Flat
39 74760644 Bolt Fin Hex 3/8-16 Unc x 2-3/4
40 4470J Spacer Split 395 X 59 Bzp
41 165838 Keeper Belt Idler
KEY PART
NO. NO. DESCRIPTION
42 19131312 Washer 13/32 X 13/16 X 12 Ga
47 127783 Pulley Idler V Groove Plastic
48 154407 Bellcrank Clutch Grnd Drv STL
49 123205X Retainer Belt Style Spring
50 74760624 Bolt Hex Hd 3/8-16unc X 1-1/2
51 73680600 Nut Crownlock 3/8-16 Unc
52 73680500 Nut Crownlock 5/16-18 unc
53 105710X Link Clutch 7 66
55 105709X Spring Return Clutch 6 75
56 74760620 Bolt Fin Hex 3/8 X 16 x 1-1/4
57 160855 V-Belt Ground Drive 95
59 169691 Keeper Belt Span Ctr
61 17060612 Screw 3/8-16 x 3/4
62 8883R Cover Pedal Blk Round
63 140186 Engine Pulley LT/YT
64 71170764 Bolt Hex 7/16-20x4 Gr 5
65 10040700 Washer Lock Hvy Hlcl Spr 7/16
66 154778 Keeper Belt Engine
70 134683 Guide Belt Mower Drive RH
72 19132012 Washer 13/32 X 1-1/4 X 12 Ga
74 109502X Spacer Axle
75 121749X Washer 25/32 X 1 1/4 X 16 Ga
76 12000001 E-ring #5133-75
77 123583X Key Square 2 0 X 1845/ 1865
78 121748X Washer 25/32 X 1-5/8 X 16 Ga
112 19091210 Washer 9/32 X 3/4 X 10 Ga
113 127285X Strap Torque 90 Degrees LH
116 72110610 Bolt Rdhd Sq Neck 3/8-16 x 1.25
150 165850 Bushing Bellcrank
151 19133210 Washer 13/32 x 2 x 10 Ga.
170 165849 Keeper Belt Transaxle Gear
202 72110612 Bolt Carr Sh 3/8-16 x 1-1/2 Gr.5
204 17000512 Screw 5/16-18 x 3/4
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
33
REPAIR PARTS
STEERING
37
TRACTOR - - MODEL NUMBER Q12538C
38
63
11
39
1
41
42
37
36
62
23
11
44
51
8
27
22
66
40
29
68
29
15
15
54
17
18
19
79
80
25
82
29
15
46
8
6
9
2
7
9
5
3
40
47
65
85
11
10
68
13
46
8
85
32
26
28
30
6
9
67
67
67
47
7
9
5
4
43
43
6
8
34
REPAIR PARTS
STEERING
TRACTOR - - MODEL NUMBER Q12538C
KEY PART
NO. NO. DESCRIPTION
1 140044 Wheel Steering Ayp/P/L Blk
2 154427 Axle Asm
3 156483 Spindle Asm LH
4 157473 Spindle Asm RH
5 6266H Bearing Race Thrust Harden
6 121748X Washer 25/32 X 1-5/8 X 16 Ga
7 19272016 Washer 27/32 X 1-1/4 X 16 Ga
8 12000029 Ring Klip #t5304-75
9 3366R Bearing Col Strg Blk
10 169832 Link Drag
11 10040600 Washer Lock Hvy Hlcl Spr 3/8
13 136518 Spacer earing Axle Front
15 145212 Hexflange Lock
17 156546 Shaft Asm Strg
18 57079 Washer Thrust 515x 750x 033
19 160395 Support Shaft
22 165857 Screw Hex Wsh Hd Torx
23 165851 Shaft Asm Pittman
25 154406 Bracket Steering
26 126847X Bushing Link Drag Blk LR
27 136874 Gear Sector
28 19131416 Washer 13/32 X 7/8 X 16 Ga
29 17060612 Screw 3/8-16 x 3/4
30 76020412 Pin Cotter 1/8 X 3/4 Cad
32 130465 Rod Tie Wire Form 19 75 Mech
36 155099 Bushing Strg 5/8 Id Dash
37 152927 Screw
38 140045 Cap Wheel Steer Ayp
40 7810H Nut Lock Center 3/8-24un
41 100711L Adaptor Wheel Strg
42 145054X428 Boot Dash Mtl Steering Blk
43 121749X Washer 25/32 X 1 1/4 X 16 Ga
44 153720 Extension Steering
46 121232X Cap Spindle Fr Top Blk
47 6855M Fitting Grease
51 73800500 Nut Lock Hex W/Ins 5/16-18
54 74780520 Bolt Fin Hex 3/8-16unc x 1-1/4
62 167902 Kit Steering Assembly Service
63 74780616 Bolt Fin Hex 3/8-16unc x 1 Gr.5
65 160367 Spacer Brace Axle
66 154404 Bearing Arm Pittman
67 72140618 Bolt Fin Hex 5/8-11 unc x 2-3/4
68 169827 Brace Axle
79 19132012 Washer 13/32 x 1 1/4 x 12 Ga.
80 74950612 Bolt Hex 3/8-16 x 3/4
82 169835 Bracket Susp Chassis Front
85 133835 Fastener Christmas Tree
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm.
35
REPAIR PARTS
ENGINE
TRACTOR - - MODEL NUMBER Q12538C
2
32
3
72
1
81
78
14
15
16
44
38
78
62
13
4
31
46
37
40
33
29
OPTIONAL EQUIPMENT
Spark Arrester
33
45
23
36
REPAIR PARTS
ENGINE
TRACTOR - - MODEL NUMBER Q12538C
KEY PART
NO. NO. DESCRIPTION
1 140310 Control Th/ch Flag
2 17720410 Screw Hex Thd Cut 1/4-20x5/8 T
3 - - - - - - - - Engine, B&S 289707
(Order parts from engine manufacturer)
4 137348 Muffler Exhaust B&S Lc
13 165291 Gasket Eng 1 313 Id Tin Plated
14 13280324 Nipple Pipe 3/8 Npt X 3"
15 13200300 Elbow Std 90 Degree 3/8-18 Npt
16 11050600 Washer Lock Ext Tooth 3/8
23 169837 Shield BRN/DBR Guard
29 137180 Kit Spark Arrestor (Flat Scrn)
31 109202X Tank Fuel Front
32 140527 Cap Asm Fuel
33 123487X Clamp Hose
37 137040 Line Fuel 20"
38 - - - - - - - - Oil Drain Plug (Order From Engine
Manufacturer)
40 124028X Bushing Snap Nyl Blk Fuel Line
44 17670412 Screw Thdrol 1/4-20 x 3/4
45 17000612 Screw Hex Wsh Thdrol 3/8-16
46 19091416 Washer 9/32 X 7/8 X 16 Ga
62 10040500 Washer Lock Hvy Hlcl Spr
72 71070512 Screw Hexcap 5/16-18 x 3/4
78 17060620 Screw 3/8-16 x 1-1/4
81 73510400 Nut Keps Hex 1/4-20 Unc
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
37
REPAIR PARTS
SEAT
14
TRACTOR - - MODEL NUMBER Q12538C
1
8
9
7
10
8
9
7
5
6
22
24
26
16
25
15
23
13
17
12
KEY PART
NO. NO. DESCRIPTION
1 127427 Seat
2 140551 Bracket Seat Pivot
3 71110616 Bolt Hex 3/8 - 16 X 1
4 19131610 Washer 13/32 X 1 X10Ga.
5 145006 Clip Push-In Hinged
6 73800600 Nut Lock Hex w/Ins 3/8 - 16
7 124181X Spring Seat Cprsn 2 250 Blk Zi
8 17000616 Screw 3/8-16 x 1.5
9 19131614 Washer 13/32 X 1 X 14 Ga
10 155925 Pan Pnt Seat (Blk)
12 121246X Bracket Pnt Mounting Switch
13 121248X Bushing Snap Blk Nyl
2
5
4
3
21
KEY PART
NO. NO. DESCRIPTION
14 72050412 Bolt Rdhd Sht Nk 1/4 - 20 X 1 -1/2
15 134300 Spacer Split .28 X .96
16 121250X Spring Cprsn
17 123976X Nut Lock 1/4 Lge Flg
21 171852 Bolt Shoulder 5/16-18 Unc-2A
22 73800500 Nut Lock Hex w/Ins 5/16 - 18
23 71110814 Bolt Hex Black
24 19171912 Washer 17/32 X 1-3/16 X 12 Ga
25 127018X Bolt Shoulder 5/16-18 X .62
26 10040800 Washer Lock Hvy Hlcl Spr 1/2
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm.
38
REPAIR PARTS
DECALS
7
8
TRACTOR - - MODEL NUMBER Q12538C
13
5
12
5
14
16
6
11
15
9
3
17
KEY PART
NO. NO. DESCRIPTION
1 4900J Decal, Clutch/Brake Eng
2 146046 Decal V-Belt Schematic
3 170839 Decal, Engine HP
5 172376 Decal, Pnl Sd
6 157002 Decal, Fender Danger English
7 172375 Decal Ins Str Wh
8 172372 Decal, Logo, Fender
9 172374 Decal Fender
10 134999 Decal, Deck Enviro
11 168427 Decal, Battery
12 172370 Decal, Hood RH
13 174212 Decal, Replacement
9
2
10
1
KEY PART
NO. NO. DESCRIPTION
14 172371 Decal, Hood LH
15 145005 Decal, Caution, Battery
16 156867 Decal, Oper Sdl P/L Gear Dr Eng
17 136832 Decal, V-Belt Sch.
- - 138311 Decal, Handle Lft Height Adj.
- - 174211 Manual, Owner's English
Available accessories not included with mower:
- - C38 Grass Catcher
- - MK38 Mulch Kit w/Blades
- - LSB42 42" Snow Blower
- - LC05 Wheel Weights
- - LBD48 48" Snow Blade
- - CH11 Tire Chains
WHEELS & TIRES
1
2
6
5,8
KEY PART
NO. NO. DESCRIPTION
1 59192 Cap, Tire valve
4,10
7
3,9
11
2 65139 Stem, Valve
3 106222X Tire, Front
4 59904 Tube, Front (Service item only)
5 106732X427 Rim assembly, 6"front
6 278H Fitting, Grease (Front wheel only)
7 9040H Bearing, Flange (Front wheel only)
8 106108X427 Rim assembly, 8" rear
9 124635X Tire, Rear
10 7152J Tube, Rear (Service item only)
11 104757X Cap, Hub Axle
- - 144334 Sealant, Tire (10 oz. Tube)
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
39
REPAIR PARTS
MOWER LIFT
TRACTOR - - MODEL NUMBER Q12538C
7
8
5
13
13
11
19
31
32
31
32
13
4
12
19
20
5
20
1
4
20
18
17
16
15
3
2
6
6
13
20
15
40
REPAIR PARTS
MOWER LIFT
TRACTOR - - MODEL NUMBER Q12538C
KEY PART
NO. NO. DESCRIPTION
1 159460 Wire Asm Inner/Sprg w/plunger
2 159471 Shaft Asm Lift RH
3 105767X Pin Groove 1 500 Zinc
4 12000002 E Ring #5133-62
5 19211621 Washer 21/32 X 1 X 21 Ga
6 120183X Bearing Nylon Blk 629 Id
7 109413X Grip Handle Bicycle Matte Blk
8 124526X Button Plunger Black
11 139865 Link Lift LH Fixed Length
12 139866 Link Lift RH Fixed Length
13 4939M Retainer Spring
15 173288 Link Front
16 73350800 Nut Jam Hex 1/2-13 Unc
17 130171 Trunnion Blk Zinc
18 73800800 Nut Lockw/Wsh 1/2-13 Unc
19 139868 Arm Suspension Rear
20 163552 Retainer, Spring
31 140302 Bearing Pvt Lift Spherical
32 73540600 Nut Crownlock 3/8-24
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm.
41
REPAIR PARTS
MOWER DECK
TRACTOR - - MODEL NUMBER Q12538C
152
151
158
1
21
153
157
154
153
109
67
156
55
123
155
54
89
107
69
122
89
40
42
56
38
113
146
36
89
40
150
45
108
36
30
33
31
53
32
148
68
2
110
21
88
87
26
28
25
24
21
10
2
15
9
8
29
14
27
2
2
3
5
6
86
19
21
16
11
13
12
128
4
149
21
23
42
REPAIR PARTS
MOWER DECK
TRACTOR - - MODEL NUMBER Q12538C
KEY PART
NO. NO. DESCRIPTION
1 170280 Mower Housing Assembly
2 72140506 Bolt Carriage 5/16-18 x 3/4
3 138017 Bracket Asm Fr. Sway Bar
4 169970 Bracket Deck Sway Bar 38"/42"
5 4939M Retainer Spring
6 130832 Arm, Suspension, Rear
8 850857 Bolt 3/8-24 x 1.25 Grade 8
9 10040600 Washer, Lock 3/8
10 140296 Washer, Hardened
11 138497 Blade Mower
12 129895 Bearing, Ball
13 137645 Shaft Assembly, Mandrel, Vented
(Includes Key Number 6)
14 128774 Housing, Mandrel, Vented
15 110485X Bearing, Ball, Mandrel
16 140329 Stripper, Vented Mower Deck
19 132827 Bolt, Shoulder
21 73680500 Nut
23 137607 Bracket, Mower Deflector
24 105304X Cap, Sleeve
25 123713X Spring, Torsion, Deflector
26 110452X Nut, Push
27 106736X428 Shield, Deflector
28 19111016 Washer 11/32 x 5/8 x 16 Gauge
29 106735X Rod, Hinge
30 157722 Screw Thdrol. Washer Head
31 129963 Washer, Spacer
32 153532 Pulley, Mandrel
33 137266 Nut, Toplock 9/16
36 131494 Pulley, Idler, Flat
45 4497H Retainer
53 130840 Brake Assembly
54 133943 Washer, Hardened
55 133840 Idler Arm Assembly
KEY PART
NO. NO. DESCRIPTION
56 165723 Spacer, Retainer
67 106932X Knob
68 144200 V-Belt, 42" Mower
69 76020312 Pin, Cotter 3/32 x 3/4
86 7631J Runner, LH
87 128772 Runner, RH
88 19111216 Washer 11/32 x 3/4 x 16 Ga
89 19131612 Washer 13/32 x 1 x 12 Ga.
107 133502 Spacer Retainer
108 133503 Stiffener, Idler Arm
109 74760640 Bolt, Hex Hd 3/8-16 x 2-1/2
110 142587 Upstop Deck Front 38"
113 17060512 Screw 5/16-1/ x 3/4
122 131289 Rod, Brake LH
123 169971 Rod, Brake RH
128 153390 Washer Felt
146 165891 Bolt Carriage Idler
148 169022 Spring Return Idler
149 165898 Re tain er Sp ring Y ello w
150 19091216 Washer 9/32 x 3/4 x 16 Ga.
151 169670 Bracket Clutch Cable
152 172758 Clutch Cable 38"/46"
153 169674 Washer Flat 3/8" Type B
154 169675 Spring Retainer
155 169671 Spring Retention LVR CLTCH CAB
156 169672 Spacer Clutch Cable
157 169669 Rod Clutch Cable 3/8"
158 17720410 Screw Hex Thd Cut 1/4-20 x 5/8
- - 130794 Mandrel Assembly (Includes Key
Numbers 12-15, 17-19, 31 and 33)
- - 170317 Mower Deck, Complete
NOTE: All component dimensions given in U.S. inches
1 inch = 25.4 mm
43
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