McCulloch PM1850SBH Einrichtungshandbuch

ILLUSTRATED PARTS BREAKDOWN

184353 7.18.02 TR

Printed in the U.S.A.

MCCULLOCH

18.0 HP LAWN TRACTOR

MODEL NO. PM1850SBH (PM18H48SB)

954 56 93-49

BATTERY

FUSE

RED

BLACK

IGNITION

UNIT

SPARK

PLUGS GAP

(2 PLUGS ON

TWIN CYL. ENGINES)

NON-REMOVABLE

CONNECTIONS

REMOVABLE

CONNECTIONS

BLACK

ORANGE

BROWN

SOLENOID

WIRING INSULATED CLIPS

NOTE: IF WIRING INSULATED

CLIPS WERE REMOVED FOR

SERVICING OF UNIT, THEY

SHOULD BE REPLACED TO

PROPERLY SECURE YOUR WIRING.

AMMETER

RED

(OPTIONAL)

HEADLIGHTS

BLACK

RED

ELECTRIC CLUTCH

CLUTCH / BRAKE

(PEDAL UP)

PTO (DISENGAGED)

RED

WHITE

GREEN GREEN

BLUE

BLACK

HOUR

METER

(OPTIONAL)

BLUE

STARTER

PTO SWITCH

CIRCUITPOSITION

OFF

C + F, B + E, A + D

C + G, B + H

FUEL SHUT-OFF SOLENOID

FUEL

LINE

IGNITION

SWITCH

BSM

OPERATOR

PRESENCE

RELAY #1

85 86

87A

SEAT SWITCH

(NOT OCCUPIED)

87A 8586

RELAY

REGULATOR

ALTERNATOR

28 VOLTS AC @ 3600 RPM

(REGULATOR DISCONNECTED)

CHARGING SYSTEM OUTPUT

16 AMP DC @ 3600 RPM

IGNITION SWITCH

CIRCUITPOSITION

OFF

B+A1RUN/LIGHT

B + S + A1START

M+G+A1

B+A1RUN

“MAKE”

A2+L

NONE

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

SCHEMATIC

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

ELECTRICAL

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

ELECTRICAL

KEY PART

NO. NO. DESCRIPTION

1 144927 Battery

2 74760412 Bolt Hex Hd 1/4-20unc X 3/4

8 7603J Tray Battery

10 145211 Bolt 1/4-20 x 7.5

11 150109 Holddown Battery

12 145769 Nut Push Nylong 1/4"

16 176138 Switch Interlock

21 175688 Harness Socket Light

22 4152J Bulb, Light # 1156

24 4799J Cable Battery

25 146148 Cable Battery

26 175158 Fuse

27 73510400 Nut Keps Hex 1/4-20 Unc

28 145491 Cable Ground

29 160784 Switch Plunger

30 175566 Switch Ign

33 140401 Key Ign Molded Generic

40 179725 Harness Ign

41 71110408 Bolt Fin Hex 1/4-20uncx 1/2

42 131563 Cover Terminal Red

43 178861 Solenoid

48 140844 Adapter Ammeter

50 174653 Switch PTO

52 141940 Protection Loop

55 17490508 Screw Thdrol 5/16-18 x 1/2

81 109748X Relay Asm.

NOTE: All component dimensions given in U.S. inches

1 inch = 25.4 mm

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

CHASSIS

208

208 11

208

207

142

145

33 10

161

206

166

212

220

159

221

219

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

CHASSIS

KEY PART

NO. NO. DESCRIPTION

1 174619 Chassis

2 176554 Drawbar

3 17060612 Screw 3/8-16 X .75

5 155272 Bumper Hood/Dash

9 168342X011 Dash P/L

10 72140608 Bolt Carriage 3/8-16 x 1

11 174996 Panel Dash Lh

13 172106 Panel Dash Rh

14 17490608 Screw Thdrol 3/8-16 x 1/2

17 174330X428 Hood

20 180679 Plate Mtg Battery Fuel Tank Fr

23 124028X Bushing

24 74780616 Bolt Fin Hex 3/8-16 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 179749 Grille/Lens Asm

29 174332X599 Lens LT/PL

30 179775X428 Fender

31 175315 Bracket Fender

33 179716X428 Footrest Pnt Lh

34 179717X428 Footrest Pnt Rh

35 72110606 Bolt Rdhd Sht Sqnk 3/8-16 x 3/4

37 17490508 Screw Thdrol 6/16-18 x 1/2 TYT

38 175710 Bracket Asm Pivot Mower Rear

39 174714 Bracket Pivot Laser LT

44 140675 Strap Asm. Fender

58 174930 Duct Air

64 154798 Dash Lower STLT

142 175702 Plate Reinforcement STLT

145 156524 Rod Pivot Chassis/Hood

159 179125X428 Cupholder

161 164655 Bumper Hood

166 164863 Screw Hi-Lo #13-16 x 3/4

206 170165 Bolt Shoulder 5/16-18

207 17670508 Screw Thdrol 5/16-18 x 1/2

208 17670608 Screw Thdrol 3/8-16 x 1/2

212 175143 Insert Lens Relect

219 17000512 Screw 5/16-18 x 3/4

- - 5479J Plug

NOTE: All component dimensions given in U.S. inches

1 inch = 25.4 mm

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

DRIVE

2519

27 51

151

202

120

156 166

165

168

163

164

159

161

198

158

162

169

150

199

250

200

73 16

250

197

212

116

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

DRIVE

KEY PART

NO. NO. DESCRIPTION

KEY PART

NO. NO. DESCRIPTION

1 - - - - - - Transaxle Hydro Gear 314-0510

(Order Parts From Transaxle

Manufacturer)

8 166020 Rod Shift Hydro

9 174367 Clutch Electric

10 76020416 Pin Cotter 1/8 x 1 CAD

14 10040400 Washer Lock Hvy Helical

15 74490544 Bolt, Hex FLGHD 5/16-18 Gr. 5

16 73800500 Nut Lock Hex W/Ins 5/16-18 Unc P

17 126197X Washer 1-1/2 OD X 15/32 ID X .250

19 73800600 Nut Lock Hex W/Wsh 3/8-16 Unc

20 173937 Bolt Hex 7/16-20 x 4 x Gr. 5-1.5 Thr.

21 140845 Knob, Round 1/2-13

22 169498 Rod, Brake Hydro

23 178289 Bracket Anti-Rotation CVX

24 73350600 Nut

25 106888X Spring, Brake Rod

26 19131316 Washer

27 76020412 Pin Cotter 1/8 x 3/4 CAD.

28 175765 Rod, Parking Brake

29 71673 Cap, Parking Brake

30 169592 Bracket, Transaxle

32 74760512 Bolt Hex Hd 5/16-18 Unc x 3/4

34 175578 Shaft, Foot Pedal

35 120183X Bearing, Nylon

36 19211616 Washer

37 1572H Pin, Roll

38 179114 Pulley, Composite, Flat

39 74760648 Bolt, Fin Hex 3/8-16 x 3

41 175556 Keeper, Belt Idler

47 127783 Pulley, Idler, V-Groove

48 154407 Bellcrank Clutch Grnd Drv STL

49 123205X Retainer, Belt

50 74760624 Bolt

51 73680600 Nut Crownlock 3/8-16 UNC

52 73680500 Nut Crownlock 5/16-18 UNC

53 105710X Link, Clutch

55 105709X Spring, Return, Clutch

56 17060620 Screw 3/8-16 x 1-1/4

57 140294 V-Belt, Ground Drive

59 169691 Keeper, Center Span

61 17120614 Screw 3/8-16 x .875

62 8883R Cover, Pedal

63 175417 Pulley, Engine

65 10040700 Washer

66 154778 Keeper Belt Engine

69 142432 Screw

71 169183 Strap Torque Lh Hydro

73 169182 Strap Torque Rh Hydro

74 137057 Spacer, Axle

75 121749X Washer 25/32 x 1-1/4 x 16 Gauge

76 12000001 E-Ring

77 123583X Key, Square

78 121748X Washer 25/32 x 1-5/8 x 16 Gauge

81 165596 Shaft Asm. Cross Hydro

82 123782X Spring Torsion T/A

83 19171216 Washer 17/32 x 3/4 x 16 Ga.

84 169594 Link Transaxle

89 179121X428 Console, Hydro

95 170201 Control Asm Bypass Hydro

96 4497H Retainer Spring 1" Zinc/Cad

116 72140608 Bolt RDHD SQNK 3/8-16 UNC x 1

120 73900600 Nut Lock Flg 3/8-16 Unc

150 175456 Spacer Retainer

151 19133210 Washer 13/32 x 2 x 10 Ga.

156 166002 Washer Srrted 5/16 ID x 1.125

158 165589 Bracket Shift Mount

159 165494 Hub Tapered Flange Shift Lt

161 72140406 Bolt Rdhd Sqnk 1/4-20 x 3/4 Gr 5

162 73680400 Nut Crownlock 1/4-20 Unc

163 74780416 Bolt Hex Fin 1/4-20 Unc x 1 Gr 5

164 19091010 Washer 5/8 x .281 x 10 Ga

165 165623 Bracket Pivot Lever

166 166880 Screw 5/16-18 x 5/8

168 165492 Bolt Shoulder 5/16-18 x .561

169 165580 Plate Fastening Lt

197 169613 Nyliner Snap-In 5/8" ID

198 169593 Washer Nyl 7/8 ID x .105

199 169612 Bolt Shoulder 5/16-18 Unc

200 72140508 Bolt Rdhd Sqnk 5/16-18 Unc x 1

202 72110612 Bolt Carr Sh 3/8-16 x 1-1/2

212 145212 Nut Hex flange Lock

250 17060612 Screw Thdrol. 3/8-16 x .75

NOTE: All component dimensions given in U.S. inches

1 inch = 25.4 mm

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

STEERING ASSEMBLY

51 54

68 67

REPAIR PARTS

TRACTOR - MODEL NO. PM1850SBH (PM18H48SB), PRODUCT NO. 954 56 93-49

STEERING ASSEMBLY

KEY PART

NO. NO. DESCRIPTION

1 159944X428 Wheel Steering

2 172393 Axle Asm Cast Iron LT

3 169840 Spindle Asm LH

4 169839 Spindle Asm RH

5 6266H Bearing Race Thrust Harden

6 121748X Washer 25/32 X 1-5/8 X 16 Ga

8 12000029 Ring Klip #t5304-75

10 175121 Link Drag

11 10040600 Washer Lock Hvy Hlcl Spr 3/8

12 73940800 Nut Hex Jam Toplock 1/2-20 Unf

13 136518 Spacer Brg Axle Front

15 145212 Nut Hex Flange Lock

17 180641 Shaft Asm Steering

29 17060612 Screw 3/8-16 x .75

32 170162 Rod Tie

33 19111216 Washer 11/32 x 3/4 x 16 Ga

34 10040500 Washer Lock Hvy Hlcl Spr 5/16

35 73540500 Crownlock Nut 5/16-24 Unf

36 155099 Bushing Strg

37 152927 Screw

38 159946X428 Insert Cap Strg Wh

39 19182411 Washer 9/16 ID. x 1-1/2 OD. 11 Ga.

40 7810H Lock nut

41 159945 Adaptor Wheel Strg

42 145054X428 Boot Steering Dash

43 121749X Washer 25/32 X 1 1/4 X 16 Ga

44 180640 Extension Steering Shaft

46 121232X Cap Spindle Fr Top Blk

51 73540400 Nut Crownlock 1/4-28

54 71130420 Bolt Hex 1/4-28 UNF x 1-1/4 Gr. 8

65 160367 Spacer Brace Axle

67 72140618 Bolt Rdhd Sq 3/8-16 Unc x 2-3/4

71 175146 Steering Asm

68 169827 Axle, Brace

82 169835 Bracket Susp Chassis Front

87 173966 Washer Flat .781 x 1-1/2 x .14

88 175118 Bolt Shoulder 7/16-20 Unc

91 175553 Clip Steering

NOTE: All component dimensions given in U.S. inches

1 inch = 25.4 mm

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