AYP 4181E94 Parts List

4181E94 (1999 & Before) Page 1 of 41
50" MOWER

4181E94 (1999 & Before) Page 2 of 41
50" MOWER

Ref # Part Number Qty Description

1 121664X SUB= 123760X
2 121875X CVR DR DECK
4 7631J RUNNER-LH M
5 72110505 BOLT
8 120449X SUB= 136320

9 72140506 BOLT
10 1685H SUB= 68478
11 19111116 WASHER
12 121622X SUB= 136819
13 121617X SUB= 121657X
15 121798X "BLADE.50""STD.LIFT"
16 74610624 BOLT.3/8-24X1-1/2
17 10040600 LOCKWASHER
18 19132012 WASHER
19 674A213 ARM ASSY GT
20 7834J SUB= 674A308
21 7835J SUB= 674A308
23 19111610 WASHER
24 102403X IDLER-FLAT T
25 74760624 SUB= 74930624
26 73220600 NUT.HEX.3/8-16UNC
27 104361X SPRING T
28 74780520 BOLT
29 19111216 WASHER M
30 8438J SPACER SPLIT LT
31 106224X SUB= 139346
32 105448X GUAGE WHL BRKT GT
33 105449X GUAGE WHL BRKT GT
34 72240606 BOLT
35 73680600 SUB= 73690600
36 105453X GUAGE WHL BAR GT
37 5565J SUB= 139031
38 4939M SUB= 85902
39 4898H BOLT M
40 105455X WHEEL.GAGE.BLK.PL
41 105433X SUSP BRKT GT
42 110237X SPACER GT
43 105434X SUSP BRACE GT
44 109778X SUB= 140741X431
45 109771X BRACKET.SUSPEN.AS
46 121352X BELT RETIANER
47 3146R RETAINER.SPRING
48 3703J V-BELT M
49 73680800 NUT LTV
51 105435X RELEASE PIN GT
52 3720R SPRING M
53 12000039 KLIP RING
54 19171612 WASHER GT
55 105440X CLEVIS PIN GT
56 105458X BRACKET T
57 109773X BRACKET T
58 110997X BRACKET T
59 120000X BRACKET T
60 73680500 SUB= 73690500
61 109776X PIVOT PIN T
62 19111016 WASHER
63 110509X DEFLECTOR
64 106734X SUB= 123713X

4181E94 (1999 & Before) Page 3 of 41
50" MOWER

Ref # Part Number Qty Description

65 109743X SUB= 137607
66 106735X ROD-HINGE T
68 110452X NUT PUSH M
69 3713J DECAL INSTRUCTION CAUTION
70 CHECK WITH SUPPLIER
71 73220800 NUT
73 19171512 WASHER
75 121349X DECAL WARNING
76 110885X NLA
77 19151610 WASHER T
78 105185X DECAL-INST YT
79 10030600 SUB= 10040600
80 109729X ROLLER T
83 76020412 COTTER PIN
84 19151616 SUB= 19171616

4181E94 (1999 & Before) Page 4 of 41
ENGINE

4181E94 (1999 & Before) Page 5 of 41
ENGINE

Ref # Part Number Qty Description

1 52-098-03 STARTER ASSY

2 X-20-1 WASHER

3 X-81-1 NUT

4 52-755-05 KIT, DRIVE

5 52-755-08 KIT, DRIVE PARTS

6 52-227-01 CAP, DRIVE END

7 52-170-02 ARMATURE

8 52-211-01 BOLT

9 277612 CAP, COMMUTATOR END
10 48-755-15 KIT, BRUSH
11 237878 KIT
12 X-67-51 SCREW
13 52-025-36 FLYWHEEL
14 52-468-15 WASHER
15 25-086-24 SCREW, 3/8-24X1-1/4
16 X-286-17 KEY
17 25-157-01 FAN
18 25-112-04 SPACER
19 25-086-21 SCREW, HEX 1/4-20 X 5/8
20 237373 SHAFT, FRONT DRIVE
21 X-159-2 SCREW
22 25-162-02 SCREEN, GRASS

25-450-03 TAG CAUTION

4181E94 (1999 & Before) Page 6 of 41
ENGINE

4181E94 (1999 & Before) Page 7 of 41
ENGINE

Ref # Part Number Qty Description

1 X-276-7 WING NUT

2 52-096-36 COVER, AIR CLEANER

3 231032 SEAL ELEMENT

4 52-082-04 COVER AIR CLEANER ELEMENT

5 45-083-01 PRE-CLEANER

6 45-083-02 ELEMENT

7 237423 SEAL

8 X-67-98 SCREW

9 52-201-06 BASE
10 277093 GASKET
11 52-754-01 KIT, ELBOW
12 52-086-11 SCREW
13 25-041-06 GASKET, AIR CLEANER
14 X-22-9 WASHER
15 X-50-57 SCREW
16 X-50-37 SCREW
17 X-25-79 WASHER
18 X-6-8 SCREW
19 X-21-1 WASHER
20 X-77-2 NUT
21 X-352-37 STUD
22 52-164-10 MANIFOLD, INTAKE
23 52-445-02 STRAP, LIFTING
24 52-041-09 GASKET
25 25-155-02 CONNECTOR
26 X-81-1 NUT
27 X-25-72 WASHER
28 52-211-04 SCREW
29 52-853-10 KIT, CARBURETOR
30 25-158-07 BUSHING, LINKAGE
31 52-079-08 LINK, GOVERNOR
32 52-186-06 ARM, GOVERNOR
33 271030 GASKET
34 52-091-04 SPRING, GOVERNOR
35 235778 CLAMP
36 X-67-97 SCREW
37 52-119-01 LEVER, SPEED CONTROL
38 234614 STOP, GOVERNOR
39 52-531-02 STOP, HIGH SPEED
40 52-144-16 SHAFT, THROTTLE
41 25-146-02 PLATE
42 25-086-27 SCREW
43 25-368-01 NEEDLE
44 25-089-02 SPRING
45 25-086-26 SCREW
46 25-089-04 SPRING
47 52-090-12 LEVER, CHOKE
48 52-337-06 JET, MAIN
49 25-041-04 GASKET
50 25-757-09 KIT
51 25-104-01 BOWL, FUEL
52 25-041-03 GASKET
53 25-100-05 SCREW, BOWL RETAINER
54 25-146-03 PLATE, CHOKE
55 25-194-01 BALL
56 25-089-03 SPRING
57 231355 PIN
58 X-25-12 WASHER

4181E94 (1999 & Before) Page 8 of 41
ENGINE

Ref # Part Number Qty Description

59 X-25-63 WASHER, PLAIN 1/4
60 X-269-28 RETAINER
61 X-25-102 WASHER
62 A-235743-S KIT
63 52-078-04 SHAFT
64 52-353-04 LINE, FUEL
65 X-426-9 CLAMP, HOSE
66 25-155-02 CONNECTOR
67 52-559-01 PUMP
68 25-041-05 GASKET, FUEL PUMP
69 X-25-63 WASHER, PLAIN 1/4
70 47-086-08 SCREW
71 25-353-03 LINE
72 25-050-01 FILTER, FUEL

25-113-07 DECAL, AIR CLEANER
25-757-08 KIT, CARBURETOR REPAIR
52-755-98 KIT, HIGH ALTITUDE JET

4181E94 (1999 & Before) Page 9 of 41
ENGINE

4181E94 (1999 & Before) Page 10 of 41
ENGINE

Ref # Part Number Qty Description

1 41-086-02 SCREW

2 220534 WASHER

3 52-015-08 HEAD, CYLINDER

4 52-041-18 GASKET, HEAD

5 X-583-5 SEAL

6 X-802-9 SCREW

7 52-041-14 GASKET, EXHAUST

8 X-21-1 WASHER

9 X-55-6 SCREW
10 X-82-2 NUT
11 52-112-08 SPACER
12 52-072-13 STUD
13 X-81-1 NUT
14 X-25-12 WASHER
15 52-096-18 COVER, #2 CYLINDER VALVE
16 52-055-01 GASKET
17 X-352-39 STUD
18 52-755-55 NUT, HEX
19 X-75-23 PLUG
20 25-086-10 SCREW
21 52-072-12 STEP STUD
22 52-468-12 WASHER
23 X-82-2 NUT
24 25-086-13 SCREW
25 52-158-04 BUSHING, LOCATING
26 52-316-06 GUIDE
27 230265 INSERT, VALVE SEAT
28 52-755-81 KIT, CYLINDER BARREL
29 41-468-01 WASHER
30 X-352-33 STUD
31 25-086-11 SCREW
32 52-874-11 PISTON W/RING SET

32A 52-874-12 PISTON W/RING SET .003"
32B 52-874-13 PISTON W/RING SET .010"
32C 52-874-14 PISTON W/RING SET .020"
32D 52-874-15 PISTON W/RING SET .030"

33 230004 RETAINER, PISTON PIN
34 52-108-09 RING SET, .003"

34A 52-108-10 RING SET, .010"
34B 52-108-11 RING SET, 020"
34C 52-108-12 RING SET, .030"

35 52-067-67 CONNECTING ROD

35A 52-067-68 CONNECT. ROD .010"

36 52-014-64 CRANKSHAFT
37 52-468-03 WASHER, .119/.122 (A.R.)

37A 52-468-04 WASHER, .128/.131
37B 52-468-05 WASHER, .137/.140 (A.R.)

38 52-016-02 VALVE, EXHAUST
39 52-017-08 VALVE, INTAKE
40 52-032-13 SEAL
41 25-089-01 SPRING
42 52-413-01 ROTATOR
43 230011 RETAINER, INTAKE VALVE
44 41-755-10 KIT RETAINER
45 52-019-02 TAPPET
46 52-012-08 CAMSHAFT
47 X-280-25 PIN, ROLL
48 52-096-03 COVER OIL PUMP

4181E94 (1999 & Before) Page 11 of 41
ENGINE

Ref # Part Number Qty Description

49 X-67-64 SCREW
50 52-393-09 ROTOR SET
51 52-144-05 SHAFT OIL PUMP
52 52-043-05 GEAR OIL PUMP
53 52-422-01 SPACER
54 52-755-50 KIT
55 52-030-10 BEARING

55A 52-030-11 BEARING
55B 52-030-12 BEARING

56 52-141-02 O-RING
57 52-139-08 PLUG
58 52-123-10 TUBE, DIPSTICK
59 X-702-15 PLUG, CUP
60 52-237-05 CLAMP, TUBE
61 X-67-64 SCREW
62 52-237-02 CLAMP, SPRING
63 52-095-03 HOUSING, OIL PICKUP
64 X-75-32 PLUG
65 52-032-10 SEAL
66 51-132-02 SPARK PLUG
67 25-086-15 SCREW, 1/4-20 X 1
68 52-584-02 MODULE
69 25-086-16 SCREW
70 52-313-02 GROMMET
71 52-126-08 BRKT
72 X-75-10 PLUG
73 25-086-12 SCREW
74 52-099-06 OIL PRESSURE SWITCH
75 REFER TO IMAGE
76 52-078-05 SHAFT
77 X-269-43 RING, RETAINING
78 46-136-02 PIPE, OIL
79 52-173-01 CAP, PIPE
80 52-154-01 CLIP, TUBE
81 X-67-64 SCREW
82 52-123-09 TUBE, OIL LEVEL
83 52-038-04 DIPSTICK, BLADE 11-5/16
84 52-326-05 HOSE, BREATHER
85 52-096-08 COVER
86 52-462-01 VALVE, BREATHER
87 52-032-04 SEAL BREATHER
88 231419 FILTER, BREATHER
89 52-096-22 COVER, #1 LOWER CYLINDER VALVE
90 275220 STUD
91 52-041-16 GASKET
92 52-181-02 ADAPTER, OIL FILTER
93 X-55-15 SCREW
94 52-050-02 OIL FILTER

52-518-22 LEAD, BLACK, MODULE TO CONNECTOR
52-518-08 LEAD, GREEN PRESSURE SWITCH

4181E94 (1999 & Before) Page 12 of 41
ENGINE

4181E94 (1999 & Before) Page 13 of 41
ENGINE

Ref # Part Number Qty Description

1 52-124-23 BAFFLE, #1 HEAD

2 52-755-71 KIT, BLOWER HOUSING

3 52-217-01 SUPPORT

4 52-468-16 WASHER

5 52-086-11 SCREW

6 X-67-83 SCREW

7 52-063-21 BATTLE, #2 CYLINDER HEAD

8 52-063-01 BAFFLE, #2 CYLINDER TOP

9 25-755-03 KIT
10 X-132-5 SCREW
11 236602 CONNECTOR
12 236473 CONNECTOR

25-518-21 LEAD, RED, RECTIFIER-REGULATOR