YZ125S (5XE1) U.S.A.,CANADA,S.AFRICA
YZ125 (5XE2) EUROPE
YZ125 (5XE3) JAPAN
YZ125S (5XE4) AUSTRALIA,NEW ZEALAND
1C5XE-100E1
2C5XE-100E1
()
YZ125S/YZ125
PARTS CATALOGUE
©2003 by Yamaha Motor Co., Ltd.
1st edition, June 2003
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan.
A3
A4
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.
A5
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
FOREWORD
A6
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
5XE1
5XE2
5XE3
5XE4
Colouring
Type Code
A 0583
A 0583
A 0583
A 0583
Colour
Code
Colour Name
DEEP PURPLISH BLUE SOLID E DPBSE
DEEP PURPLISH BLUE SOLID E DPBSE
DEEP PURPLISH BLUE SOLID E DPBSE
DEEP PURPLISH BLUE SOLID E DPBSE
Abbrevia-
tion
(5) Model Code – Production Code Number of Model Listed in This Parts Catalogue
Model
Code
5XE1
5XE2
5XE3 010 JAPAN
5XE4 010
Production
Code No.
010 U.S.A.
020 CANADA
030 SOUTH AFRICA
010 FRANCE
020 GERMANY
030 SPAIN
040
050 ITALY
Country
(destination)
UNITED KINGDOM
AUSTRALIA
NEW ZEALAND
Model
Code
Production
Code No.
Country
(destination)
A7
ENGINE
CYLINDER HEAD .................................................................B2
GOVERNOR .........................................................................B4
CRANKSHAFT & PISTON ....................................................B5
WATER PUMP ......................................................................B6
RADIATOR & HOSE .............................................................B7
INTAKE .................................................................................B8
CARBURETOR .....................................................................B9
EXHAUST .............................................................................B12
CRANKCASE ........................................................................B13
CRANKCASE COVER 1 .......................................................B14
STARTER ..............................................................................B15
CLUTCH ................................................................................C2
TRANSMISSION ...................................................................C3
SHIFT CAM & FORK .............................................................C5
SHIFT SHAFT .......................................................................C6
CHASSIS
FRAME ..................................................................................C7
FENDER ................................................................................C8
SIDE COVER ........................................................................C9
REAR ARM ...........................................................................C10
REAR SUSPENSION ............................................................C12
STEERING ............................................................................C14
FRONT FORK .......................................................................C15
FUEL TANK ...........................................................................D4
SEAT .....................................................................................D5
FRONT WHEEL .................................................................... D6
FRONT BRAKE CALIPER ....................................................D7
REAR WHEEL .......................................................................D8
REAR BRAKE CALIPER .......................................................D10
STEERING HANDLE & CABLE ............................................D11
FRONT MASTER CYLINDER ...............................................D12
STAND & FOOTREST ..........................................................D13
REAR MASTER CYLINDER .................................................D14
GENERATOR ........................................................................D15
HANDLE SWITCH & LEVER ................................................E2
ELECTRICAL 1 .....................................................................E3
ALTERNATE FOR CHASSIS ................................................E4
OPTIONAL PARTS 1 ............................................................E6
CONTENTS
INDEX
NUMERICAL INDEX ............................................................. M1
FIG. 1 CYLINDER HEAD
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
PART NO. DESCRIPTION
5UN–11111–00
90116–08394
90176–08026
90201–080L8
93210–63442
93210–90785
5XE–11311–00
5DH–11351–01
90116–08318
90116–08388
99590–10114
90179–08299
94702–00324
HEAD, CYLINDER 1 1 1 1 1
BOLT, STUD 5 5 5 5
NUT, CROWN 5 5 5 5
WASHER, PLATE 5 5 5 5
O-RING 1 1 1 1
O-RING 1 1 1 1
CYLINDER 1 1 1 1 1
GASKET, CYLINDER 1 1 1 1
BOLT, STUD 2 2 2 2
BOLT, STUD 2 2 2 2
PIN, DOWEL 2 2 2 2
NUT 4444
PLUG, SPARK (NGK BR9EG) 1 1 1
5XE1
5XE2
5XE3
5XE4
REMARKS
B
2
94709–00324
14
5HD–1131D–20
15
5HD–1132D–20
16
91317–05012
17
5HD–1131V–00
18
4SS–11832–00
19
91317–04010
20
5UN–11395–00
21
93104–08040
22
4SS–1131M–00
23
4JY–11166–00
24
90467–13062
25
4JY–11354–10
26
98907–05016
PLUG, SPARK (NGK BR9EG) 1
VALVE ASSY 1111
VALVE ASSY 2 1 1 1 1
BOLT 4444
SHAFT 1 1 1 1 1
LEVER, LINK 1111
BOLT 1111
HOLDER 1111
OIL SEAL 1 1 1 1
COVER 1 1 1 1
PIPE, BREATHER 1 1 1 1 1
CLIP 1111
GASKET 1 1 1 1
SCREW, BIND 4 4 4 4
FIG. 1 CYLINDER HEAD
REF.
NO.
27
28
29
30
31
32
33
PART NO. DESCRIPTION
90508–16134
90387–08785
4JY–11991–01
4JY–11993–01
97007–05016
92907–05600
4JY–11995–00
SPRING, TORSION 2 2 2 2
COLLAR 2222
HOUSING 1 1 1 1 1
.GASKET 1 1 1 1
BOLT 4444
WASHER, PLATE 4 4 4 4
SEAL, HOUSING 1 1 1 1
5XE1
5XE2
5XE3
5XE4
REMARKS
B
3
FIG. 2 GOVERNOR
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PART NO. DESCRIPTION
4JY–11915–01
98507–05012
4SS–11990–00
90387–085E1
90201–057H5
97007–05012
93104–08040
3JE–11922–01
91317–04006
93300–60801
5X4–11921–02
5NY–11953–00
90501–30001
5CU–11952–00
90201–150U6
PLATE, THRUST 1 1 1 1 1
SCREW, PAN HEAD 1 1 1 1
PUSH ROD ASSY 1 1 1 1
COLLAR 1111
WASHER, PLATE 1 1 1 1
BOLT 1111
OIL SEAL 1 1 1 1
FORK, GOVERNOR 1 1 1 1
BOLT 2222
BEARING (B0060) 2 2 2 2 KOYO
SHAFT, GOVERNOR 1 1 1 1
GEAR, GOVERNOR 1 1 1 1
SPRING, COMPRESSION 1 1 1 1
PLATE 1 1 1 1
WASHER, PLATE 3 3 3 3
5XE1
5XE2
5XE3
5XE4
REMARKS
B
4
16
90387–152F2
17
93340–21505
18
5CU–11912–00
19
5CU–11911–00
20
93507–16020
21
93603–14240
22
90387–107T9
COLLAR 1111
BEARING 2 2 2 2
RETAINER, WEIGHT 1 1 1 1
RETAINER 1111
BALL 4444
PIN, DOWEL 1 1 1 1
COLLAR 1111 AP
FIG. 3 CRANKSHAFT & PISTON
REF.
NO.
1
2
3
4
5
6
7
8
PART NO. DESCRIPTION
5MV–11400–00
5MV–11410–00
5MV–11420–00
5MV–11651–00
3JD–11681–10
90209–22071
93310–522P7
5NY–11631–01–A0
CRANKSHAFT ASSY 1 1 1 1
.CRANKSHAFT 1 1 1 1
.CRANKSHAFT 1 1 1 1
.ROD, CONNECTING 1 1 1 1
.PIN, CRANK 1 1 1 1 1
.WASHER 2 2 2 2
.BEARING 1111
PISTON (STD) 1 1 1 1 UR RED
5XE1
5XE2
5XE3
5XE4
REMARKS
5NY–11631–01–B0
5NY–11631–01–C0
5NY–11631–01–D0
9
5NY–11611–00
10
5UN–11633–00
11
93450–16068
12
93310–21510
13
93306–37204
14
93102–20485
15
93102–30008
16
90280–03017
PISTON (STD) 1 1 1 1 UR ORANGE
PISTON (STD) 1 1 1 1 UR GREEN
PISTON (STD) 1 1 1 1 UR PURPLE
RING, PISTON 1 1 1 1
PIN, PISTON 1 1 1 1
CIRCLIP 2 2 2 2
BEARING 1 1 1 1
BEARING (63/22SH2-9TC4) 2 2 2 2 KOYO
OIL SEAL 1 1 1 1
OIL SEAL 1 1 1 1
KEY, WOODRUFF 1111
B
5
FIG. 4 WATER PUMP
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PART NO. DESCRIPTION
5DH–12459–01
5DH–12451–00
99001–06600
90201–083P5
90201–08784
93109–11073
93102–12106
93306–00105
4JY–12422–01
4JY–12428–10
93604–10011
95027–06065
95027–06030
90430–06014
95027–06010
GEAR, IMPELLER SHAFT 1 1 1 1
IMPELLER, WATER PUMP 1 1 1 1
CIRCLIP 1 1 1 1
WASHER, PLATE 1 1 1 1
WASHER, PLATE 1 1 1 1
OIL SEAL 1 1 1 1
OIL SEAL (SD 12-22-5 HS) 1 1 1 1
BEARING (B6001) 1 1 1 1
COVER, HOUSING 1 1 1 1
GASKET, HOUSING COVER 2 1 1 1 1
PIN, DOWEL 2 2 2 2
BOLT, FLANGE 2 2 2 2
BOLT, FLANGE 2 2 2 2
GASKET 1 1 1 1
BOLT, FLANGE 1 1 1 1
5XE1
5XE2
5XE3
5XE4
REMARKS
B
6
FIG. 5 RADIATOR & HOSE
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PART NO. DESCRIPTION
5NY–1240A–00
91A20–05065
90467–09006
5NY–12461–00
5HD–12462–00
5NY–12481–00
5NY–12482–00
5NY–12483–01
5NY–12484–00
90450–28014
90450–22017
90450–25037
90480–15528
90387–06065
95027–06025
RADIATOR ASSY 1 1 1 1
TUBE, FLEXIBLE VINYL 1 1 1 1
CLIP 1111
RADIATOR ASSY 1 1 1 1
CAP, RADIATOR 1 1 1 1
PIPE 1 1 1 1 1
PIPE 2 1 1 1 1
PIPE 3 1 1 1 1
PIPE 4 1 1 1 1
HOSE CLAMP ASSY 2 2 2 2
HOSE CLAMP ASSY 2 2 2 2
HOSE CLAMP ASSY 4 4 4 4
GROMMET 6 6 6 6
COLLAR 6666
BOLT, FLANGE 6 6 6 6
5XE1
5XE2
5XE3
5XE4
REMARKS
B
7
16
90201–06571
17
95827–06010
WASHER, PLATE 6 6 6 6
BOLT, FLANGE 2 2 2 2
FIG. 6 INTAKE
REF.
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PART NO. DESCRIPTION
5UN–13610–00
5UN–13613–00
5MV–13616–00
98507–03006
92907–03100
5MV–13625–00
5UN–13565–00
95027–06020
90450–54003
90450–70072
5NY–14401–01
5NX–14453–00
5NY–14459–00
5NY–14455–10
5NY–14442–00
REED VALVE ASSY 1 1 1 1
.REED, VALVE 2 2 2 2
.STOPPER, REED VALVE 2 2 2 2
.SCREW, PAN HEAD 6 6 6 6
.WASHER, SPRING 6 6 6 6
.SPACER, REED VALVE 1 1 1 1
JOINT, CARBURETOR 1 1 1 1
BOLT, FLANGE 4 4 4 4
HOSE CLAMP ASSY 1 1 1 1
HOSE CLAMP ASSY 1 1 1 1
AIR CLEANER CASE ASSY 1 1 1 1
JOINT, AIR CLEANER 1 1 1 1 1
HOLDER, GUIDE 1 1 1 1
BAND 1111
SPACER 1111
5XE1
5XE2
5XE3
5XE4
REMARKS
B
8
16
5NY–14417–00
17
90267–32070
18
90201–03313
19
4XM–14451–00
20
90209–06096
21
90122–06035
22
3JD–14458–01
23
90183–06023
24
90109–067F4
COVER 1 1 1 1 1
RIVET, BLIND 3 3 3 3
WASHER, PLATE 6 6 6 6
ELEMENT, AIR CLEANER 1 1 1 1
WASHER 1 1 1 1
BOLT, WING 1111
GUIDE 1 1 1 1
NUT, SPRING 4 4 4 4
BOLT 4444
FIG. 7 CARBURETOR
REF.
NO.
1
PART NO. DESCRIPTION
5XE–14101–00
CARBURETOR ASSY 1 1 1 1
5XE1
5XE2
5XE3
5XE4
REMARKS
5XE–14101–10
2
5HD–14261–00
3
4PE–14194–00
4
3MA–14159–00
5
3JE–14171–00
6
3JD–14104–00
7
1FN–14565–00
8
5ET–14261–01
9
98507–04008
10
353–14186–00
11
4PE–14107–38
12
98507–04014
13
4PE–14131–00
14
4PE–14103–00
15
5ET–14197–00
16
10V–14196–00
17
5ET–14185–00
CARBURETOR ASSY 1 1
.HOLDER 1 1 1 1
.RING 1 1 1 1
.CLIP 1 1 1 1
.PLUNGER, STARTER 1 1 1 1
.AIR SCREW SET 1 1 1 1
.SCREW 1 1 1 1
.HOLDER 1 1 1 1
.SCREW, PAN HEAD 1 1 1 1
.PIN, FLOAT 1 1 1 1
.NEEDLE VALVE SET 1 1 1 1
.SCREW, PAN HEAD 2 2 2 2
.SPRING, THROTTLE VALVE 1 1 1 1
.THROTTLE SCREW SET 1 1 1 1
.PIPE 2 2 2 2
.PIPE 1 1 1 1
.FLOAT 1111
B
9
18
2K6–14147–00
19
5ET–14115–00
20
284–14116–F6
284–14116–F5
284–14116–E3
284–14116–E4
284–14116–E5
284–14116–E6
284–14116–E7
.O-RING 1 1 1 1
.PLUG, SCREW 1 1 1 1
.NEEDLE (6CHY6-81) 1 1 1 STD
.NEEDLE (6CHY6-80) 1 STD
.NEEDLE (6CHY5-78) 1 1 1 1 AP
.NEEDLE (6CHY5-79) 1 1 1 1 AP
.NEEDLE (6CHY5-80) 1 1 1 1 AP
.NEEDLE (6CHY5-81) 1 1 1 1 AP
.NEEDLE (6CHY5-82) 1 1 1 1 AP
FIG. 7 CARBURETOR
REF.
NO.
20
PART NO. DESCRIPTION
284–14116–E8
.NEEDLE (6CHY5-83) 1 1 1 1 AP
5XE1
5XE2
5XE3
5XE4
REMARKS
284–14116–E9
284–14116–F5
284–14116–F3
284–14116–F4
284–14116–F6
284–14116–F7
284–14116–F8
284–14116–F9
21
4KM–14142–40
4KM–14142–37
4KM–14142–30
4KM–14142–32
4KM–14142–35
4KM–14142–37
4KM–14142–40
4KM–14142–42
4KM–14142–45
.NEEDLE (6CHY5-84) 1 1 1 1 AP
.NEEDLE (6CHY6-80) 1 1 1 AP
.NEEDLE (6CHY6-78) 1 1 1 1 AP
.NEEDLE (6CHY6-79) 1 1 1 1 AP
.NEEDLE (6CHY6-81) 1 AP
.NEEDLE (6CHY6-82) 1 1 1 1 AP
.NEEDLE (6CHY6-83) 1 1 1 1 AP
.NEEDLE (6CHY6-84) 1 1 1 1 AP
.JET, PILOT (# 40) 1 1 1 STD
.JET, PILOT (# 37.5) 1 STD
.JET, PILOT (# 30) 1 1 1 1 AP
.JET, PILOT (# 32.5) 1 1 1 1 AP
.JET, PILOT (# 35) 1 1 1 1 AP
.JET, PILOT (# 37.5) 1 1 1 AP
.JET, PILOT (# 40) 1 AP
.JET, PILOT (# 42.5) 1 1 1 1 AP
.JET, PILOT (# 45) 1 1 1 1 AP
B
10
4KM–14142–47
4KM–14142–50
22
137–14143–82
137–14143–78
137–14143–80
137–14143–84
137–14143–86
137–14143–88
137–14143–90
.JET, PILOT (# 47.5) 1 1 1 1 AP
.JET, PILOT (# 50) 1 1 1 1 AP
.JET, MAIN (#410) 1 1 1 1 STD
.JET, MAIN (#390) 1 1 1 1 AP
.JET, MAIN (#400) 1 1 1 1 AP
.JET, MAIN (#420) 1 1 1 1 AP
.JET, MAIN (#430) 1 1 1 1 AP
.JET, MAIN (#440) 1 1 1 1 AP
.JET, MAIN (#450) 1 1 1 1 AP
FIG. 7 CARBURETOR
REF.
NO.
23
PART NO. DESCRIPTION
5NY–14112–40
.VALVE, THROTTLE 1 1 1 1 1 STD
5XE1
5XE2
5XE3
5XE4
REMARKS
5NY–14112–37
5NY–14112–42
24
5ET–1416A–00
25
5ET–14147–00
26
51R–14146–00
27
98502–05014
28
2HH–14197–00
29
87M–14137–00
30
5MV–14194–00
31
5MV–24514–00
32
5MV–14146–00
33
5MV–14216–00
34
5MV–14261–00
35
5NY–14181–00
.VALVE, THROTTLE 1 1 1 1 1 AP
.VALVE, THROTTLE 1 1 1 1 1 AP
.O-RING 1 1 1 1
.O-RING 1 1 1 1
.PLATE 1111
.SCREW, PAN HEAD 3 3 3 3
.PIPE 2 2 2 2
.CLIP 3 3 3 3
.RING 1 1 1 1
.NET, FILTER 1 1 1 1 1
.PLATE 1111
.SCREW 1 1 1 1
.HOLDER 1 1 1 1
.BODY, FLOAT CHAMBER 1 1 1 1 1
B
11
FIG. 8 EXHAUST
REF.
NO.
1
PART NO. DESCRIPTION
5NY–14610–20
EXHAUST PIPE ASSY 1 1 1 1
5XE1
5XE2
5XE3
5XE4
REMARKS
5NY–14610–00
2
5MV–14642–00
3
90507–20052
4
565–14771–00
5
5CU–14771–00
6
90480–16561
7
90387–063G3
8
90387–062W7
9
95027–06045
10
90201–06060
11
90201–06071
12
95027–06012
13
90119–06192
14
95027–06025
15
4JY–14615–00
16
5XE–14753–00
17
5NY–1469A–00
EXHAUST PIPE ASSY 1 1
SEAL, EXHAUST 2 2 2 2
SPRING, TENSION 2 2 2 2
STAY, MUFFLER 1 1 1 1 1
STAY, MUFFLER 1 1 1 1 1
GROMMET 1 1 1 1
COLLAR 1111
COLLAR 1111
BOLT, FLANGE 1 1 1 1
WASHER, PLATE 1 1 1 1
WASHER, PLATE 1 1 1 1
BOLT, FLANGE 1 1 1 1
BOLT, WITH WASHER 1 1 1 1
BOLT, FLANGE 1 1 1 1
JOINT, EXHAUST 1 1 1 1 1
SILENCER, EXHAUST 1 1 1 1
.FIBER 1 1 1 1
B
12
18
92017–06010
19
95027–06025
20
90201–06071
21
90387–063G3
22
90480–16561
23
90387–06039
24
90480–16404
.BOLT, BUTTON HEAD 2 2 2 2
BOLT, FLANGE 1 1 1 1
WASHER, PLATE 1 1 1 1
COLLAR 1111
GROMMET 1 1 1 1
COLLAR 1111
GROMMET 1 1 1 1
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