YAMAHA YFM125S, YFM125 PARTS CATALOGUE 08

YFM25RX (4D31) U.S.A.
YFM25RX (4D32) CANADA
YFM25RX (4D33) EUROPE
YFM25RX (4D34) OCEANIA
YFM250R (4D34) JAPAN

1G4D3-100E1

2G4D3-100E1

()

A2

YFM25RX/YFM250R

PARTS CATALOGUE

©2007 by Yamaha Motor Co., Ltd.

1st edition, June 2007

All rights reserved.

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Co., Ltd.

is expressly prohibited.

A3

FOREWORD

This Parts Catalogue is related to the parts for the model(s) on the cover page. When you are
ordering replacement parts, please refer to this Parts Catalogue and quote both part numbers
and part names correctly.

1. Modifications or additions which have been made after the issue of the Parts Catalogue
will be announced in the Parts News.
It is advisable that you make the necessary corrections to the Parts Catalogue according
to the Parts News.

2. Abbreviations
The following abbreviations are used in this Parts Catalogue.

“UR” Use specified parts number.
“UN” Use as many as needed.
“AP” Alternate Parts
“LM” Locally Made (Parts need to be ordered locally)
“F#” Frame No. (Applicable machine No.)
“O/S” Over Size

3. The number of components for assembly

• Parts, which are to be supplied in an assembly, are listed with a dot (.) in front of the
part name as shown below.

• The numeral appearing to the right of each component part indicates the quantity of
parts for each assembly unit.

PART NO. DESCRIPTION Q’TY REMARKS

2F5–83310–60 FRONT FLASHER LIGHT ASSY 2

115–83311–60 .BULB (6V–18W) 1

6. The asterisk (*) before a reference number indicates modified items after the first edition.

4. Applicable colours of graphics are represented in the “REMARKS” as shown below.

PART NO. DESCRIPTION Q’TY REMARKS

2N4–24110–00–X5 FUEL TANK COMP. 2 MXR

3J1–24240–10 .GRAPHIC, FUEL TANK 1 FOR MXR

5. Note that the illustrations for reference in finding parts numbers are not to be used for
assembling. When assembling, please use the applicable service manual.

A4

7. Applicable Serial No.

Engine Serial No. Frame Serial No.

8. Applicable Colour Code (The (*) mark shows Model colour.)

Abbreviation Colour Name Colour Code

DPBSE(*) DEEP PURPLISH BLUE SOLID E 0583

HPB BLACK (FOR ELECTRODEPOSIT) 00R4

PGD(*) PASTEL DARK GRAY 003E

S8 SILVER 8 0895

SL SILVER 0035

VRC7 VIVID RED COCKTAIL 7 0580

WW WHITE 0036

FOREWORD

9. Quantity Column Information

Column No. Name Of Q’ty Column Destination

1 USA U.S.A.

2 CAN CANADA

3 EUR EUROPE

4 OCE OCEANIA

5JPN JAPAN

A5

MODEL LABEL

(1) A label called “Model Label” is affixed in the location as indicated in (3) below.

When using this parts catalogue, please be sure to cross–reference the “model code –
production code No.” in the catalogue with the “model code – production code No.” indi­cated on the Model Label affixed onto the product concerned.

(2) “Model Label” Indication

(3) Model Label Affixing Location

(4) Colouring Information

Model Code

4D31

4D32

4D33

4D34

Colouring

Type Code

A 0583

B 003E

A 0583

B 003E

A 0583

B 003E

A 0583

B 003E

Colour

Code

Colour Name

DEEP PURPLISH BLUE SOLID E DPBSE

PASTEL DARK GRAY PGD

DEEP PURPLISH BLUE SOLID E DPBSE

PASTEL DARK GRAY PGD

DEEP PURPLISH BLUE SOLID E DPBSE

PASTEL DARK GRAY PGD

DEEP PURPLISH BLUE SOLID E DPBSE

PASTEL DARK GRAY PGD

Abbrevia-

tion

(5) Model Code – Production Code Number of Model Listed in This Parts Catalogue

Model

Code

4D31 010 U.S.A.

4D32 010 CANADA

4D33 010 EUROPE

4D34

Production

Code No.

010

020 JAPAN

Country

(destination)

AUSTRALIA

NEW ZEALAND

Model

Code

Production

Code No.

Country

(destination)

A6

ENGINE

CYLINDER HEAD .................................................................B2

CYLINDER ............................................................................B4

CRANKSHAFT & PISTON ....................................................B5

VALVE ...................................................................................B7

CAMSHAFT & CHAIN ...........................................................B8

OIL PUMP .............................................................................B9

OIL COOLER ........................................................................B10

INTAKE .................................................................................B11

CARBURETOR .....................................................................B12

EXHAUST .............................................................................B15

CRANKCASE ........................................................................C2

CRANKCASE COVER 1 .......................................................C3

STARTER CLUTCH ..............................................................C5

CLUTCH ................................................................................C6

TRANSMISSION ...................................................................C8

SHIFT CAM & FORK .............................................................C9

CHASSIS

FRAME ..................................................................................C10

FRONT FENDER ..................................................................C12

REAR FENDER .....................................................................C13

REAR ARM ...........................................................................C15

REAR SUSPENSION ............................................................D2

FRONT SUSPENSION & WHEEL ........................................D3

STEERING ............................................................................D5

FUEL TANK ...........................................................................D6

SEAT .....................................................................................D7

FRONT WHEEL .................................................................... D8

FRONT BRAKE CALIPER ....................................................D9

REAR WHEEL .......................................................................D11

REAR BRAKE CALIPER .......................................................D12

STEERING HANDLE & CABLE ............................................D13

FRONT MASTER CYLINDER ...............................................D14

STAND & FOOTREST ..........................................................D15

REAR MASTER CYLINDER .................................................E2

GUARD .................................................................................E3

GENERATOR ........................................................................E4

STARTING MOTOR ..............................................................E5

HEADLIGHT ..........................................................................E6

TAILLIGHT ............................................................................E7

TAILLIGHT 2 .........................................................................E8

CONTENTS

HANDLE SWITCH & LEVER ................................................ E9

ELECTRICAL 1 ..................................................................... E10

ELECTRICAL 2 ..................................................................... E12

GRAPHICS ........................................................................... E13

EMBLEM & LABEL 1 ............................................................ E14

EMBLEM & LABEL 2 ............................................................ E15

EMBLEM & LABEL 3 ............................................................ F2

EMBLEM & LABEL 4 ............................................................ F3

EMBLEM & LABEL 5 ............................................................ F4

INDEX

NUMERICAL INDEX ............................................................. M1

FIG. 1 CYLINDER HEAD

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

PART NO. DESCRIPTION

3C5–11102–00

5H0–11133–11

93440–10085

90153–06002

90430–06014

5XT–11181–00

4D3–1112F–00

91312–06016

5XT–14815–00

99530–14016

90105–08160

90201–08609

91312–08045

4D3–11190–00

5XT–11165–00

CYLINDER HEAD ASSY 1 1 1 1 1

.GUIDE, VALVE 1 22222

.CIRCLIP 2 2 2 2 2

.SCREW, HEXAGON 1 1 1 1 1

.GASKET 1 1 1 1 1

GASKET, CYLINDER HEAD 1 1 1 1 1 1

PLATE 2 1 1 1 1 1

BOLT 22222

GASKET 11111

PIN, DOWEL 2 2 2 2 2

BOLT, FLANGE 4 4 4 4 4

WASHER, PLATE 4 4 4 4 4

BOLT 22222

COVER, CYLINDER HEAD 1 1 1 1 1 1

.PLATE, BREATHER 1 1 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

B

2

16

4D3–11196–00

17

90105–06126

18

4D3–11166–00

19

90467–12053

20

93211–05471

21

95022–06020

22

4D3–11186–00

23

93210–54001

24

5XT–1111F–00

25

90105–06078

26

94701–00345

94703–00345

.GASKET, CYLINDER HEAD SIDE 1 1 1 1 1

.BOLT, FLANGE 2 2 2 2 2

PIPE, BREATHER 1 1 1 1 1 1

CLIP 11111

O-RING 1 1 1 1 1

BOLT, FLANGE 2 2 2 2 2

COVER, CYLINDER HEAD SIDE 2 2 2 2 2 2

O-RING 2 2 2 2 2

PLATE 11111

BOLT, FLANGE 2 2 2 2 2

PLUG, SPARK (NGK DR7EA) 1 1 1 1 WITH RESISTER

PLUG, SPARK (NGK DR7EA) 1

FIG. 1 CYLINDER HEAD

REF.
NO.

27

PART NO. DESCRIPTION

90116–08023

BOLT, STUD 2 2 2 2 2

USA

CAN

EUR

OCE

REMARKS

JPN

B

3

FIG. 2 CYLINDER

REF.
NO.

1

2

3

PART NO. DESCRIPTION

4D3–11311–00

4D3–11351–00

91312–06065

CYLINDER 1 1 1 1 1 1

GASKET, CYLINDER 1 1 1 1 1

BOLT 22222

USA

CAN

EUR

OCE

REMARKS

JPN

B

4

FIG. 3 CRANKSHAFT & PISTON

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

PART NO. DESCRIPTION

4D3–11400–00

4D3–11412–00

4D3–11422–00

1S4–11681–00

93310–63239

1S4–11651–00

90240–07105

90501–07629

93602–13177

93306–37804

1S4–11631–10–A0

4XV–11603–00

4XV–11633–00

90468–12069

5BP–11549–00

CRANKSHAFT ASSY 1 1 1 1 1

.CRANK 1 11111

.CRANK 2 11111

.PIN, CRANK 1 1 1 1 1 1

.BEARING 11111

.ROD, CONNECTING 1 1 1 1 1

PIN, CLEVIS 1 1 1 1 1

SPRING, COMPRESSION 1 1 1 1 1

PIN, DOWEL 1 1 1 1 1

BEARING 2 2 2 2 2

PISTON (STD) 1 1 1 1 1

PISTON RING SET (STD) 1 1 1 1 1

PIN, PISTON 1 1 1 1 1

CLIP 22222

SPROCKET, CAM CHAIN 1 1 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

B

5

16

90105–10430

17

90201–102R1

18

90280–05048

19

1S4–11536–00

20

5XT–11454–00

21

93306–30214

22

5XT–11478–00

23

1S4–11531–00

24

5XT–11496–00

25

5XT–11533–00

26

90501–22721

27

93605–10090

BOLT, FLANGE 1 1 1 1 1

WASHER, PLATE 1 1 1 1 1

KEY, WOODRUFF 11111

GEAR, DRIVE 1 1 1 1 1

WEIGHT 1 11111

BEARING 2 2 2 2 2

COLLAR 11111

GEAR, BALANCE WEIGHT 1 1 1 1 1

BOSS, BUFFER 1 1 1 1 1

PLATE, ABSORBER 1 1 1 1 1

SPRING, COMPRESSION 6 6 6 6 6

PIN, DOWEL 3 3 3 3 3

FIG. 3 CRANKSHAFT & PISTON

REF.
NO.

28

29

30

PART NO. DESCRIPTION

90215–12272

90170–12370

90282–05013

WASHER, LOCK 1 1 1 1 1

NUT 11111

KEY, STRAIGHT 1 1 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

B

6

FIG. 4 VALVE

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

PART NO. DESCRIPTION

5H0–12111–02

5XT–12121–00

4G0–12116–01

11H–12113–00

11H–12114–00

5H0–12119–00

4G0–12117–00

4G0–12118–00

36X–12151–00

5H0–12156–00

5H0–12146–00

93210–09165

5XT–12159–00

90170–06128

VALVE, INTAKE 1 1 1 1 1

VALVE, EXHAUST 1 1 1 1 1

SEAT, VALVE SPRING 2 2 2 2 2

SPRING, VALVE INNER 2 2 2 2 2

SPRING, VALVE OUTER 2 2 2 2 2

SEAL, VALVE STEM 2 2 2 2 2

RETAINER, VALVE SPRING 2 2 2 2 2

COTTER, VALVE 4 4 4 4 4

ARM, VALVE ROCKER 2 2 2 2 2

SHAFT, ROCKER 2 1 1 1 1 1

SHAFT, ROCKER 1 1 1 1 1

O-RING 1 1 1 1 1

SCREW, VALVE ADJUSTING 2 2 2 2 2

NUT 22222

USA

CAN

EUR

OCE

REMARKS

JPN

B

7

FIG. 5 CAMSHAFT & CHAIN

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

PART NO. DESCRIPTION

1S4–12171–00

93306–00518

93306–20204

93210–11453

5XT–12176–00

4KB–11145–00

93604–10011

90101–10016

90201–10591

94582–19104

5BP–12231–00

5XT–12241–00

5XT–12210–00

4FM–12213–00

91312–06025

CAMSHAFT 1 11111

BEARING 1 1 1 1 1

BEARING 1 1 1 1 1 KOYO

O-RING 1 1 1 1 1

SPROCKET, CAM CHAIN 1 1 1 1 1

PLATE, BREATHER 2 1 1 1 1 1

PIN, DOWEL 1 1 1 1 1

BOLT 11111

WASHER, PLATE 1 1 1 1 1

CHAIN (DID SCR-0404 SV 104LE) 1 1 1 1 1

GUIDE, STOPPER 1 1 1 1 1 1

GUIDE, STOPPER 2 1 1 1 1 1

TENSIONER ASSY, CAM CHAIN 1 1 1 1 1

GASKET, TENSIONER CASE 1 1 1 1 1

BOLT 22222

USA

CAN

EUR

OCE

REMARKS

JPN

B

8

16

90101–06043

BOLT 22222

FIG. 6 OIL PUMP

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

PART NO. DESCRIPTION

4D3–13300–00

4D3–13326–00

99009–11400

4D3–13329–00

90149–06093

90430–06156

22F–13411–01

5TA–13440–00

4D3–13447–00

93210–54175

90109–06169

93210–07135

91312–06070

91312–06020

5XT–13161–00

OIL PUMP ASSY 1 1 1 1 1

GEAR, PUMP DRIVEN 2 1 1 1 1 1

CIRCLIP 11111

GASKET, PUMP COVER 1 1 1 1 1

SCREW 33333

GASKET 11111

STRAINER, OIL 1 1 1 1 1

ELEMENT ASSY, OIL CLEANER 1 1 1 1 1

COVER, OIL ELEMENT 1 1 1 1 1

O-RING 1 1 1 1 1

BOLT 11111

O-RING 2 2 2 2 2

BOLT 11111

BOLT 11111

PIPE, DELIVERY 1 1 1 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

B

9

16

90401–10061

17

90430–10171

18

90401–08009

19

90430–08119

BOLT, UNION 11111

GASKET 22222

BOLT, UNION 11111

GASKET 22222

FIG. 7 OIL COOLER

REF.
NO.

1

2

3

4

5

6

7

8

PART NO. DESCRIPTION

91312–06016

93210–10197

4KB–13470–00

4D3–13464–00

4D3–13465–00

90480–15235

93210–12152

93612–16254

BOLT 22222

O-RING 2 2 2 2 2

OIL COOLER ASSY 1 1 1 1 1

HOSE, OIL 1 1 1 1 1 1

HOSE, OIL 2 1 1 1 1 1

GROMMET 22222

O-RING 2 2 2 2 2

PIN, DOWEL 2 2 2 2 2

USA

CAN

EUR

OCE

REMARKS

JPN

B

10

FIG. 8 INTAKE

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

PART NO. DESCRIPTION

4D3–13586–00

93210–35537

91312–06020

4D3–13596–00

90450–47002

24W–14193–00

91A20–07010

90450–58003

4D3–14411–00

4D3–14453–00

31A–14419–00

2XJ–14477–00

4D3–14459–00

95602–05100

2XJ–14451–00

JOINT, CARBURETOR 1 1 1 1 1 1

O-RING 1 1 1 1 1

BOLT 22222

JOINT, CARBURETOR 2 1 1 1 1 1

HOSE CLAMP ASSY 2 2 2 2 2

PIPE 1 1 1 1 1

TUBE, FLEXIBLE VINYL 1 1 1 1 1

HOSE CLAMP ASSY 1 1 1 1 1

CASE, AIR CLEANER 1 1 1 1 1 1

JOINT, AIR CLEANER 1 1 1 1 1 1

PIPE 1 1 1 1 1

PLATE 11111

HOLDER, GUIDE 1 1 1 1 1

NUT, U 66666

ELEMENT, AIR CLEANER 1 1 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

B

11

16

2XJ–14458–00

17

90209–06014

18

90122–06035

19

4D3–14412–00

20

4D3–14452–00

21

5GH–14436–00

22

59V–14457–00

23

90467–220A1

24

4D3–2177C–00

GUIDE 11111

WASHER 1 1 1 1 1

BOLT, WING 11111

CAP, CLEANER CASE 1 1 1 1 1 1

SEAL 1 1 1 1 1

HOOK 44444

SEAL 1 1 1 1 1

CLIP 11111

PLATE, EPA OFFROAD ATV 1 1

FIG. 9 CARBURETOR

REF.
NO.

1

PART NO. DESCRIPTION

4D3–14901–00

CARBURETOR ASSY 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

4D3–14901–10

2

4D3–1490J–00

4D3–1490J–10

3

4D3–14933–00

4

4D3–14841–00

5

4D3–14112–00

6

5GH–14918–10

7

4D3–14958–00

8

98507–04010

9

4KM–14142–25

10

4D3–1490A–00

11

1AE–14147–00

12

4D3–14105–00

13

3H1–14962–00

14

3H1–14147–00

15

620–1423E–53

16

4D3–14261–00

CARBURETOR ASSY 1 1 1 1

.NEEDLE SET 1 1

.NEEDLE SET 1 1 1

.SPRING, DIAPHRAGM 1 1 1 1 1

.DIAPHRAGM 1 1 1 1 1

.VALVE, THROTTLE 1 1 1 1 1 1

.RING 11111

.COVER, DIAPHRAGM 1 1 1 1 1

.SCREW, PAN HEAD 4 4 4 4 4

.JET, PILOT (# 25) 11111

.DIAPHRAGM SET 1 1 1 1 1 1

..O-RING 1 1 1 1 1

.PILOT SCREW SET 1 1 1 1 1

..WASHER 11111

..O-RING 1 1 1 1 1

.JET, MAIN (#133.8) 1 1 1 1 1

.HOLDER 11111

B

12

17

4D3–14937–00

18

127–14186–00

19

5YT–14107–20

20

5DM–14561–00

21

5DM–1414M–40

22

4KM–14216–00

23

3G2–14231–11

24

12R–14191–00

25

98507–04006

.CLIP 11111

.PIN, FLOAT 1 1 1 1 1

.NEEDLE VALVE SET 1 1 1 1 1

.O-RING 1 1 1 1 1

.NOZZLE, MAIN 1 1 1 1 1

.SCREW 22222

.JET, POWER (# 55) 1 1 1 1 1

.PLUG, DRAIN 1 1 1 1 1

.SCREW, PAN HEAD 3 3 3 3 3

FIG. 9 CARBURETOR

REF.
NO.

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

PART NO. DESCRIPTION

5DM–14952–00

5LP–14147–00

4WV–14293–00

98507–04008

1FN–14565–00

5DM–14985–00

5V7–14153–00

4D3–14988–00

1S3–14161–00

3GD–14155–00

137–14133–00

5FU–14962–00

4D3–14123–00

4D3–14193–00

5AP–14280–00

.WASHER 1 1 1 1 1

.O-RING 1 1 1 1 1

.COVER 1 11111

.SCREW, PAN HEAD 1 1 1 1 1

.SCREW 11111

.FLOAT 11111

.WASHER, MAIN JET 1 1 1 1 1

.PIPE, STARTER CONNECTING 1 1 1 1 1

.NUT, CABLE ADJUSTING 1 1 1 1 1

.GUIDE, CABLE 1 1 1 1 1

.SPRING, THROTTLE STOP 1 1 1 1 1

.WASHER 1 1 1 1 1

.SCREW, AIR ADJUSTING 1 1 1 1 1

.PIPE 1 1 1 1 1

.COVER, CARBURETOR 1 1 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

B

13

41

4D3–1490H–00

42

3HT–14934–00

43

97607–04114

44

1HX–14231–34

45

98507–05010

46

90467–09026

47

5CY–14951–00

48

5FU–83790–00

49

3F9–14118–00

50

90461–06087

51

4D3–82509–00

52

4D3–14196–00

.DIAPHRAGM SET 5 1 1 1 1 1

..SPRING, THROTTLE STOP 1 1 1 1 1

.SCREW,WITH WASHER 2 2 2 2 2

.JET, MAIN (#170) 1 1 1 1 1

.SCREW, PAN HEAD 1 1 1 1 1

.CLIP 11111

.WASHER 1 1 1 1 1

.HEATER ASSY (15W) 1 1 1 1 1

.CAP 1 1

.CLAMP 11111

.WIRE, SUB LEAD 1 1 1 1 1

.PIPE 1 1 1 1 1

FIG. 9 CARBURETOR

REF.
NO.

53

54

PART NO. DESCRIPTION

1UM–14197–00

5JJ–14987–00

.PIPE 1 1 1 1 1

.HOSE 11111

USA

CAN

EUR

OCE

REMARKS

JPN

B

14

FIG. 10 EXHAUST

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

PART NO. DESCRIPTION

4D3–14611–00

4D3–14628–00

98902–06008

90201–05017

4D3–14710–00

3YF–14714–00

4D3–14718–00

95024–08025

3GD–14613–00

95702–08500

95812–08016

PIPE, EXHAUST 1 1 1 1 1 1

PROTECTOR, EXHAUST PIPE 1 1 1 1 1

SCREW, BIND 2 2 2 2 2

WASHER, PLATE 4 4 4 4 4

MUFFLER ASSY 1 1 1 1 1 1

.GASKET, MUFFLER 1 1 1 1 1

.PROTECTOR, MUFFLER 1 1 1 1 1 1

.BOLT, FLANGE 1 1 1 1 1

GASKET, EXHAUST PIPE 1 1 1 1 1

NUT, WITH WASHER 22222

BOLT, FLANGE 2 2 2 2 2

USA

CAN

EUR

OCE

REMARKS

JPN

B

15

FIG. 11 CRANKCASE

REF.
NO.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

PART NO. DESCRIPTION

5XT–15100–07

99530–10114

95022–06045

95022–06060

95022–06070

95022–06055

4D3–15327–00

90430–06014

90462–08045

90461–08001

4D3–15441–00

95812–06016

90462–10215

95022–06010

90340–12059

CRANKCASE ASSY 1 1 1 1 1

.PIN, DOWEL 2 2 2 2 2

BOLT, FLANGE 4 4 4 4 4

BOLT, FLANGE 2 2 2 2 2

BOLT, FLANGE 3 3 3 3 3

BOLT, FLANGE 3 3 3 3 3

SPACER, ENGINE MOUNT 1 1 1 1 1

GASKET 33333

CLAMP 11111

CLAMP 11111

HOLDER, CLUTCH CABLE 1 1 1 1 1

BOLT, FLANGE 1 1 1 1 1

CLAMP 11111

BOLT, FLANGE 1 1 1 1 1

PLUG, STRAIGHT SCREW 1 1 1 1 1

USA

CAN

EUR

OCE

REMARKS

JPN

C

2

16

90430–12213

17

99530–14016

18

95812–10170

19

95602–10200

GASKET 11111

PIN, DOWEL 2 2 2 2 2

BOLT, FLANGE 1 1 1 1 1

NUT, U FLANGE 1 1 1 1 1