Yamaha YCDCMP User Manual

YZ125F1
A1

CYLINDER HEAD

Ref. Part No. Number Description Qty Remarks
1 4JY-11111-00-00 HEAD, CYLINDER 1
(4JY-11111-01-00) . . . . . . . . . . 1
2 90116-08394-00 BOLT, STUD . . . . . . . . . . . . . . 5
3 90176-08026-00 NUT, CROWN . . . . . . . . . . . . . 5
4 90201-08087-00 WASHER, PLATE . . . . . . . . . . . 5
5 93210-63442-00 O-RING . . . . . . . . . . . . . . . . . . 1
6 93210-90785-00 O-RING . . . . . . . . . . . . . . . . . . 1
7 4JY-11311-00-00 CYLINDER 1 . . . . . . . . . . . . . . 1
10 90467-11044-00 CLIP . . . . . . . . . . . . . . . . . . . . 1
11 4JY-11351-00-00 GASKET, CYLINDER . . . . . . . . 1
12 90116-08318-00 BOLT, STUD . . . . . . . . . . . . . . 2
13 90116-08388-00 BOLT, STUD . . . . . . . . . . . . . . 2
14 99510-10114-00 PIN, DOWEL . . . . . . . . . . . . . . 2
15 90179-08491-00 NUT, FLANGE . . . . . . . . . . . . . 4
16 NGK-B9EG0-00-00 NGK B9EG 4PK . . . . . . . . . . . . 1 UR
17 4JY-1131A-00-00 VALVE 1 . . . . . . . . . . . . . . . . . 1
18 4JY-1132A-00-00 VALVE 2 . . . . . . . . . . . . . . . . . 1
19 4JY-1131E-00-00 HOLDER 1 . . . . . . . . . . . . . . . . 2
20 98903-05010-00 SCREW, BIND . . . . . . . . . . . . . 4
21 4JY-1131V-00-00 SHAFT 1 . . . . . . . . . . . . . . . . . 1
22 4JY-11832-00-00 LEVER, LINK . . . . . . . . . . . . . . 1
23 91316-04008-00 BOLT . . . . . . . . . . . . . . . . . . . . 1
24 4JY-11812-00-00 SHAFT, VALVE . . . . . . . . . . . . 1
25 93104-08040-00 OIL SEAL . . . . . . . . . . . . . . . . . 1
26 4JY-1131M-00-00 COVER . . . . . . . . . . . . . . . . . . 1
27 4JY-11354-00-00 GASKET . . . . . . . . . . . . . . . . . 1
28 98901-05014-00 SCREW, BIND . . . . . . . . . . . . . 4
YZ125F1
A2
CONTINUED ON NEXT FRAME
CYLINDER HEAD
Ref. Part No. Number Description Qty Remarks
29 4JY-11991-00-00 HOUSING 1 . . . . . . . . . . . . . . . 1
30 4JY-11993-00-00 . GASKET . . . . . . . . . . . . . . . . 1
31 97001-05016-00 BOLT (97002-05016-00) . . . . . . 4
32 92990-05600-00 WASHER, PLATE . . . . . . . . . . . 4
33 4JY-11995-00-00 SEAL, HOUSING . . . . . . . . . . . 1
YZ125F1
A3

GOVERNOR

Ref. Part No. Number Description Qty Remarks
1 4JY-11931-00-00 LEVER . . . . . . . . . . . . . . . . . . . 1
3 4JY-11937-00-00 BOSS, LEVER . . . . . . . . . . . . . 1
7 4JY-11990-00-00 PUSH ROD ASSEMBLY . . . . . . 1
8 90201-057H5-00 WASHER, PLATE . . . . . . . . . . . 1
9 97001-05016-00 BOLT (97002-05016-00) . . . . . . 1
10 92990-05100-00 WASHER, SPRING . . . . . . . . . . 1
11 93104-08040-00 OIL SEAL . . . . . . . . . . . . . . . . . 1
12 3JE-11922-00-00 FORK, GOVERNOR . . . . . . . . . 1
13 91316-04006-00 BOLT . . . . . . . . . . . . . . . . . . . . 2
14 93300-60814-00 BEARING (608M4ML01) . . . . . . 2 NMB
15 5X4-11921-02-00 SHAFT, GOVERNOR . . . . . . . . 1
16 24X-11953-01-00 GEAR, GOVERNOR . . . . . . . . . 1
17 90560-08213-00 SPACER . . . . . . . . . . . . . . . . . 1
18 90501-264J6-00 SPRING, COMPRESSION . . . . . 1
19 5X4-11952-00-00 PLATE . . . . . . . . . . . . . . . . . . . 1
20 90201-154E9-00 WASHER, PLATE . . . . . . . . . . . 4
21 90387-152F2-00 COLLAR . . . . . . . . . . . . . . . . . 1
22 93340-21505-00 BEARING . . . . . . . . . . . . . . . . . 2
23 5X5-11912-01-00 RETAINER, WEIGHT . . . . . . . . 1
24 4JX-11911-01-00 RETAINER . . . . . . . . . . . . . . . . 1
25 93521-64032-00 BALL . . . . . . . . . . . . . . . . . . . . 5
26 93603-14179-00 PIN, DOWEL . . . . . . . . . . . . . . 1
YZ125F1
A4

CRANKSHAFT - PISTON

Ref. Part No. Number Description Qty Remarks
1 4JY-11400-00-00 CRANKSHAFT ASSEMBLY . . . 1
2 4JY-11412-00-00 . CRANK 1 . . . . . . . . . . . . . . . . 1
3 4JY-11422-00-00 . CRANK 2 . . . . . . . . . . . . . . . . 1
4 4PE-11651-00-00 . ROD, CONNECTING . . . . . . . . 1
5 3JD-11681-01-00 . PIN, CRANK 1 . . . . . . . . . . . . 1
6 90209-22257-00 . WASHER . . . . . . . . . . . . . . . . 2
7 93310-522P7-00 . BEARING . . . . . . . . . . . . . . . . 1
8 4JY-11631-00-A0 PISTON (STD) . . . . . . . . . . . . . 1 UR RED
4JY-11631-00-B0 PISTON (STD) . . . . . . . . . . . . . 1 UR ORANGE
4JY-11631-00-C0 PISTON (STD) . . . . . . . . . . . . . 1 UR GREEN
4JY-11631-00-D0 PISTON (STD) . . . . . . . . . . . . . 1 UR PURPLE
9 4JY-11611-00-00 RING, PISTON . . . . . . . . . . . . . 1
10 280-11633-00-00 PIN, PISTON . . . . . . . . . . . . . . 1
11 93450-17129-00 CIRCLIP . . . . . . . . . . . . . . . . . . 2
12 93310-216L2-00 BEARING, CYLINDRICAL . . . . 1
13 93306-37204-00 BEARING (63/22SH2-9TC4) . . . 2 KOYO
14 93102-22363-00 OIL SEAL . . . . . . . . . . . . . . . . . 1
15 93103-32171-00 OIL SEAL (93103-32099-00 ) . . 1
16 90280-03017-00 KEY, WOODRUFF . . . . . . . . . . 1
YZ125F1
A5

WATER PUMP

Ref. Part No. Number Description Qty Remarks
1 1LX-12459-00-00 GEAR, IMPELLER SHAFT . . . . 1
2 1LX-12450-00-00 IMPELLER SHAFT ASSEMBLY 1
3 99080-07600-00 CIRCLIP (E) . . . . . . . . . . . . . . . 1
4 90201-08512-00 WASHER, PLATE . . . . . . . . . . . 1
5 93603-22028-00 PIN, DOWEL . . . . . . . . . . . . . . 1
6 90201-08784-00 WASHER, PLATE . . . . . . . . . . . 1
7 93103-10168-00 OIL SEAL . . . . . . . . . . . . . . . . . 1
9 4JY-12428-00-00 GASKET, HOUSING COVER 2 . 1
10 93604-10011-00 PIN, DOWEL . . . . . . . . . . . . . . 2
11 95021-06065-00 BOLT, FLANGE . . . . . . . . . . . . 2
12 95023-06030-00 BOLT, FLANGE (95021-06030) . 2
13 90430-06166-00 GASKET . . . . . . . . . . . . . . . . . 1
14 95023-06010-00 BOLT, FLANGE . . . . . . . . . . . . 1
YZ125F1
A6

RADIATOR - HOSE

Ref. Part No. Number Description Qty Remarks
1 4EW-1240A-01-00 RADIATOR ASSEMBLY . . . . . . 1
2 91A20-05065-00 TUBE, FLEXIBLE VINYL . . . . . 1
3 90467-09006-00 CLIP . . . . . . . . . . . . . . . . . . . . 1
4 4EX-12461-00-00 RADIATOR ASSEMBLY . . . . . . 1
5 22W-12462-00-00 CAP, RADIATOR . . . . . . . . . . . 1
6 4EW-12482-01-00 PIPE 2 . . . . . . . . . . . . . . . . . . . 1
7 4JY-12483-00-00 PIPE 3 . . . . . . . . . . . . . . . . . . . 1
8 3AK-12483-00-00 PIPE 3 . . . . . . . . . . . . . . . . . . . 1
9 4EX-12469-00-00 JOINT 1 . . . . . . . . . . . . . . . . . . 1
10 4EX-12477-01-00 PIPE 7 . . . . . . . . . . . . . . . . . . . 2
11 4DC-1248A-00-00 PIPE 8 . . . . . . . . . . . . . . . . . . . 1
12 90450-28014-00 HOSE CLAMP ASSEMBLY . . . 6 13 90450-22052-00 HOSE CLAMP ASSEMBLY . . . 4 14 90450-15041-00 HOSE CLAMP ASSEMBLY . . . 1 15 90450-17036-00 HOSE CLAMP ASSEMBLY . . . 1
16 90480-15528-00 GROMMET . . . . . . . . . . . . . . . . 6
17 90387-0700G-00 COLLAR . . . . . . . . . . . . . . . . . 6
18 95023-06030-00 BOLT, FLANGE (95021-06030) . 6
19 90201-06765-00 WASHER, PLATE . . . . . . . . . . . 4
YZ125F1
A7

INTAKE

Ref. Part No. Number Description Qty Remarks
1 4JY-13610-00-00 REED VALVE ASSEMBLY . . . . 1
2 4JY-13613-00-00 . REED, VALVE . . . . . . . . . . . . 2
3 4JY-13616-00-00 . STOPPER, REED VALVE . . . . 2
5 92990-03100-00 . WASHER, SPRING
(92901-03100) . . . . . . . . . . . . 4
6 4JY-13565-00-00 JOINT, CARBURETOR . . . . . . . 1
7 95023-06020-00 BOLT, FLANGE . . . . . . . . . . . . 4
8 90450-51070-00 HOSE CLAMP ASSEMBLY . . . 1 9 90450-70072-00 HOSE CLAMP ASSEMBLY . . . 1
10 4EX-14453-02-00 JOINT, AIR CLEANER 1 . . . . . . 1
11 3JD-14459-00-00 HOLDER, GUIDE . . . . . . . . . . . 1
12 3JD-14462-00-00 SEAL . . . . . . . . . . . . . . . . . . . . 1
13 4EW-14411-02-00 CASE, AIR CLEANER 1 . . . . . . 1
14 3JD-14477-00-00 PLATE . . . . . . . . . . . . . . . . . . . 1
15 95601-05100-00 NUT, U . . . . . . . . . . . . . . . . . . . 5
16 4EW-14451-00-00 ELEMENT, AIR CLEANER . . . . 1
17 3JD-14458-00-00 GUIDE . . . . . . . . . . . . . . . . . . . 1
18 90209-06096-00 WASHER . . . . . . . . . . . . . . . . . 1
19 90122-06035-00 BOLT, WING . . . . . . . . . . . . . . 1
20 90201-06571-00 WASHER, PLATE . . . . . . . . . . . 2
21 90105-06553-00 BOLT, WASHER BASED . . . . . 2
YZ125F1
A8

CARBURETOR

Ref. Part No. Number Description Qty Remarks
1 4JY-14101-00-00 CARBURETOR ASSEMBLY 1 . 1 UR
2 3X3-14197-00-00 . PIPE . . . . . . . . . . . . . . . . . . . 1
3 3JD-14147-00-00 . O-RING . . . . . . . . . . . . . . . . . 1
4 256-14919-00-00 . CLIP . . . . . . . . . . . . . . . . . . . 1
5 3JD-14194-00-00 . RING . . . . . . . . . . . . . . . . . . . 1
6 2HH-14197-00-00 . PIPE . . . . . . . . . . . . . . . . . . . 2
7 3JE-14171-00-00 . PLUNGER, STARTER . . . . . . 1
8 363-14187-00-00 . ARM, FLOAT . . . . . . . . . . . . . 1
9 353-14186-00-00 . PIN, FLOAT . . . . . . . . . . . . . . 1
10 214-14118-00-00 . CAP . . . . . . . . . . . . . . . . . . . . 2
11 98517-04012-00 . SCREW, PAN HEAD . . . . . . . 2
12 92990-04100-00 . WASHER, SPRING . . . . . . . . . 2
13 3JD-14131-00-00 . SPRING, THROTTLE VALVE . 1 14 98580-03010-00 . SCREW, PAN HEAD
(98502-03010) . . . . . . . . . . . . 1
15 92990-03100-00 . WASHER, SPRING
(92901-03100) . . . . . . . . . . . . 1
16 3XV-14185-10-00 . FLOAT . . . . . . . . . . . . . . . . . . 1
17 3JE-14561-00-00 . O-RING . . . . . . . . . . . . . . . . . 1
18 4DB-14115-00-00 . PLUG, SCREW . . . . . . . . . . . . 1
19 3XV-14185-00-00 . FLOAT . . . . . . . . . . . . . . . . . . 1
20 3JE-14147-00-00 . O-RING . . . . . . . . . . . . . . . . . 1
21 3JD-14116-G0-00 . NEEDLE (J8-6EJ35-59) . . . . . 1 STD
3JD-14116-G1-00 . NEEDLE (J8-6EJ35-57) . . . . . 1 AP
3JD-14116-G2-00 . NEEDLE (J8-6EJ35-58) . . . . . 1 AP
3JD-14116-G3-00 . NEEDLE (J8-6EJ35-60) . . . . . 1 AP
3JD-14116-G4-00 . NEEDLE (J8-6EJ35-61) . . . . . 1 AP
22 3H1-14142-12-00 . JET, PILOT (#12.5) . . . . . . . . . 1 AP
3H1-14142-15-00 . JET, PILOT (#15) . . . . . . . . . . 1 STD
YZ125F1
A9
CONTINUED ON NEXT FRAME
CARBURETOR
Ref. Part No. Number Description Qty Remarks
22 3H1-14142-17-00 . JET, PILOT (#17.5) . . . . . . . . . 1 AP
3H1-14142-20-00 . JET, PILOT # 0 . . . . . . . . . . . 1 AP
23 137-14143-60-A0 . JET, MAIN (# 300) . . . . . . . . . 1 AP
137-14143-62-A1 . JET, MAIN (#310) . . . . . . . . . . 1 AP
137-14143-64-00 . JET, MAIN (#320) . . . . . . . . . . 1 AP
137-14143-66-A1 . JET MAIN, (# 330) . . . . . . . . . 1 STD
137-14143-68-00 . JET, MAIN (#340) . . . . . . . . . . 1 AP
137-14143-70-00 . JET, MAIN (#350) . . . . . . . . . . 1 AP
137-14143-72-00 . JET, MAIN (#360) . . . . . . . . . . 1 AP
24 3JD-14107-35-00 . NEEDLE VALVE SET . . . . . . . 1
25 3JD-14112-40-00 . VALVE, THROTTLE (C.A 4.0) . 1 AP
3JD-14112-45-00 . VALVE, THROTTLE (C.A 4.5) . 1 AP
3JD-14112-50-00 . VALVE, THROTTLE (C.A 5.0) . 1 STD
3JD-14112-55-00 . VALVE, THROTTLE (C.A 5.5) . 1 AP
3JD-14112-60-00 . VALVE, THROTTLE (C.A 6.0) . 1 AP
26 3JD-14103-00-00 . THROTTLE SCREW SET . . . . 1
27 3JD-14104-00-00 . AIR SCREW SET . . . . . . . . . . 1
YZ125F1
A10

EXHAUST

Ref. Part No. Number Description Qty Remarks
1 4JY-14610-00-00 EXHAUST PIPE ASSEMBLY 1 . 1
2 93210-42728-00 O-RING . . . . . . . . . . . . . . . . . . 2
4 565-14771-00-00 STAY, MUFFLER 1 . . . . . . . . . . 2
5 95023-06012-00 BOLT, FLANGE . . . . . . . . . . . . 2
8 4JY-14753-00-00 SILENCER, EXHAUST . . . . . . . 1
9 4JY-1469A-00-00 . FIBER . . . . . . . . . . . . . . . . . . 1
10 97011-06010-00 . BOLT . . . . . . . . . . . . . . . . . . . 2
11 92995-06100-00 . WASHER, SPRING . . . . . . . . . 2
12 92901-06600-00 . WASHER . . . . . . . . . . . . . . . . 2
13 95023-06025-00 BOLT, FLANGE . . . . . . . . . . . . 1
14 90387-063G3-00 COLLAR . . . . . . . . . . . . . . . . . 1
15 90480-16561-00 GROMMET . . . . . . . . . . . . . . . . 1
16 90480-10289-00 GROMMET . . . . . . . . . . . . . . . . 1
17 90387-107R6-00 COLLAR . . . . . . . . . . . . . . . . . 1
18 95024-06016-00 BOLT, FLANGE . . . . . . . . . . . . 1
YZ125F1
A11

CRANKCASE

Ref. Part No. Number Description Qty Remarks
1 4JY-15111-00-00 CRANKCASE 1 . . . . . . . . . . . . 1
2 353-13115-01-00 CONNECTOR, SUCTION PIPE . 1
3 90445-08605-00 HOSE . . . . . . . . . . . . . . . . . . . . 1
4 99510-12016-00 PIN, DOWEL . . . . . . . . . . . . . . 2
5 4JY-15121-00-00 CRANKCASE 2 . . . . . . . . . . . . 1
6 90387-160H4-00 COLLAR . . . . . . . . . . . . . . . . . 2
7 90340-12097-00 PLUG, STRAIGHT SCREW . . . . 1
8 90430-12207-00 GASKET . . . . . . . . . . . . . . . . . 1
10 91316-06055-00 BOLT, SOCKET HEAD . . . . . . . 6
11 91316-06070-00 BOLT, SOCKET HEAD . . . . . . . 2
12 90465-08336-00 CLAMP . . . . . . . . . . . . . . . . . . 1
YZ125F1
A12

CRANKCASE COVER 1

Ref. Part No. Number Description Qty Remarks
1 4JY-15411-00-00 COVER, CRANKCASE 1 . . . . . 1
2 4JY-15451-00-00 GASKET, CRANKCASE
COVER 1 . . . . . . . . . . . . . . . . . 1
4 92901-06600-00 WASHER . . . . . . . . . . . . . . . . . 5
5 4EX-15421-00-00 COVER, CRANKCASE 2 . . . . . 1
7 4JY-15431-00-00 COVER, CRANKCASE 3 . . . . . 1
8 4JY-15462-00-00 GASKET, CRANKCASE
COVER 3 . . . . . . . . . . . . . . . . . 1
9 99530-10014-00 PIN, DOWEL . . . . . . . . . . . . . . 2
10 1RG-15363-00-00 PLUG, OIL . . . . . . . . . . . . . . . . 1
11 93210-19123-00 O-RING . . . . . . . . . . . . . . . . . . 1
12 95023-06010-00 BOLT, FLANGE . . . . . . . . . . . . 1
13 90430-06014-00 GASKET . . . . . . . . . . . . . . . . . 1
14 95023-06030-00 BOLT, FLANGE (95021-06030) . 6
15 95023-06040-00 BOLT, FLANGE (1YW) . . . . . . . 2
16 4JY-15415-00-00 COVER, GENERATOR . . . . . . . 1
17 4JY-15463-00-00 GASKET, CARBURETOR
COVER 2 . . . . . . . . . . . . . . . . . 1
18 93604-10011-00 PIN, DOWEL . . . . . . . . . . . . . . 2
19 95023-06025-00 BOLT, FLANGE . . . . . . . . . . . . 6
YZ125F1
B1

STARTER

Ref. Part No. Number Description Qty Remarks
2 137-17417-00-05 SHIM 1 (0.5T) . . . . . . . . . . . . . . 1
3 93440-15012-00 CIRCLIP . . . . . . . . . . . . . . . . . . 2
4 1LX-15660-02-00 KICK AXLE ASSEMBLY . . . . . . 1
5 1LX-15641-00-00 GEAR, KICK . . . . . . . . . . . . . . 1
6 90468-26048-00 CLIP . . . . . . . . . . . . . . . . . . . . 1
8 90201-171G4-00 WASHER, PLATE . . . . . . . . . . . 1
9 90560-17279-00 SPACER . . . . . . . . . . . . . . . . . 1
10 93102-17263-00 OIL SEAL . . . . . . . . . . . . . . . . . 1
11 4DB-15620-03-00 KICK CRANK ASSEMBLY . . . . 1
12 4DB-15621-03-00 . BOSS, KICK CRANK . . . . . . . 1
13 90501-12081-00 . SPRING, COMPRESSION . . . . 1
14 93507-32031-00 . BALL . . . . . . . . . . . . . . . . . . . 1
15 93210-15171-00 . O-RING . . . . . . . . . . . . . . . . . 1
16 90152-06010-00 . SCREW, COUNTERSUNK . . . 1
17 97021-06012-00 BOLT . . . . . . . . . . . . . . . . . . . . 1
18 90201-065F3-00 WASHER, PLATE . . . . . . . . . . . 1
YZ125F1
B2

CLUTCH

Ref. Part No. Number Description Qty Remarks
1 3XJ-16111-00-00 GEAR, PRIMARY DRIVE . . . . . 1
2 90387-202T9-00 COLLAR . . . . . . . . . . . . . . . . . 1
3 90105-10445-00 BOLT, WASHER BASED . . . . . 1
4 4JY-16150-00-00 PRIMARY DRIVEN GEAR
COMP. . . . . . . . . . . . . . . . . . . . 1
5 4EX-16371-00-00 BOSS, CLUTCH . . . . . . . . . . . . 1
9 90501-23598-00 SPRING, COMPRESSION . . . . . 5
10 90159-06016-00 SCREW, WITH WASHER . . . . . 5
11 3SB-16356-00-00 ROD, PUSH 1 . . . . . . . . . . . . . . 1
12 93342-21013-00 BEARING, THRUST . . . . . . . . . 1
13 90201-204K8-00 WASHER, PLATE . . . . . . . . . . . 1
14 3XJ-16181-00-00 SPACER 1 . . . . . . . . . . . . . . . . 1
15 93310-225N0-00 BEARING . . . . . . . . . . . . . . . . . 1
16 3XJ-16164-00-00 PLATE, THRUST 2 . . . . . . . . . . 1
17 90215-16320-00 WASHER, LOCK . . . . . . . . . . . 1
18 90170-16326-00 NUT . . . . . . . . . . . . . . . . . . . . . 1
19 4EX-16382-00-00 AXLE, PUSH LEVER . . . . . . . . 1
20 90109-06418-00 BOLT . . . . . . . . . . . . . . . . . . . . 1
21 90430-06014-00 GASKET . . . . . . . . . . . . . . . . . 1
22 93102-12224-00 OIL SEAL . . . . . . . . . . . . . . . . . 1
23 3JD-16340-00-00 PUSH LEVER ASSEMBLY . . . . 1
24 90201-10119-00 WASHER, PLATE . . . . . . . . . . . 1
25 99009-10400-00 CIRCLIP . . . . . . . . . . . . . . . . . . 1
26 93315-11206-00 BEARING . . . . . . . . . . . . . . . . . 1
YZ125F1
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