YZ125P
(5NY1)
USA,CANADA
YZ125
YZ125
YZ125
YZ125P
(5NY1)
(5NY2)
(5NY3)
(5NY4)
SOUTH AFRICA
EUROPE
JAPAN
AUSTRALIA,NEW ZEALAND
1A5NY–100E1
YZ125P/YZ125
PARTS CATALOGUE
E2001 by Yamaha Motor Co., Ltd.
1st Edition, Jun. 2001
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
A
3
A
4
FOREWORD
This Parts Catalogue is related to the parts for the model(s) in the below frame. When you are
orderingreplacementparts, pleasereferto this Parts Catalogue andquote both part numbers and
part names correctly.
YZ125P(5NY1/5NY4),YZ125(5NY2/5NY3)
1. Modifications or additions which have been made after issue of the Parts
Catalogue will be announced in the Yamaha Parts News.
It is advisable that you make necessary corrections to the Parts Catalogue
according to the Yamaha 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” Local Made (Parts need to be ordered locally)
“F#” Frame No. (Applicable machine No.)
3. Parts, which are to be supplied in an assembly, are listed with a dot(.) in
front of the part name as shown below.
EXAMPLE
CARBURETOR ASSY
.JET, PILOT
.NOZZLE, MAIN
4. Number of component for assembly
The numeral appearing to the right of each component part indicates the
quantity of parts for each assembly unit.
EXAMPLE
PART NO. DESCRIPTION Q’TY REMARKS
2F5–83310–60 FRONT FLASHER LIGHT ASSY 2
115–83311–60 .BULB (6V–18W) 1
1M1–83309–60 .REFLECTOR 1
5. Applicable colors of graphics are represented in the “REMARKS” as shown
below.
PART NO. DESCRIPTION Q’TY REMARKS
2N4–24110–00–X5 FUEL TANK COMP. 1 MXR
3J1–24240–10 .GRAPHIC, FUEL TANK 1 FOR MXR
6. Applicable Serial No.
Engine Serial No. Frame Serial No.
7. Note that the illustrations for reference in finding parts numbers, not to be
used for assembling. When assembling, please use the applicable service
manual.
8. The asterisk (*) before a reference number indicates modification items
after the first edition.
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5
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–refer the “model code –
production code No.” in the catalogue to the “model code – production code No.
“indicated on the Model Label affixed onto the product concemed.
(2) “Model Label”Indication
ab
xxxx – xxx
c
x
(3) Model Label Affixing Location
a: Model Type Code
b: Production Code No.
c: Colouring Type
4TW1–010
A
(4) Model Code – Production Code Number of Model Listed in This Parts Catalog
Model
Code
5NY1
5NY2
5NY3 010 JAPAN
5NY4
Production
Code No.
010 USA
020 CANADA
030
010 FRANCE
020 GERMANY
030 SPAIN
040 ENGLAND
050 ITALY
010 AUSTRALIA
020
Country
(destination)
SOUTH AFRICA
NEW ZEALAND
Model
Code
Production
Code No.
(destination)
Country
(5) Colouring Information
Model
Code
5NY1
5NY2
5NY3
5NY4
A
6
Colouring type
code
A 0583
Colour
code
Colour Name
DEEP PURPLISH BLUE
SOLID E
Abbrevi-
ation
DPBSE
ENGINE
CYLINDER HEAD B2...................................
GOVERNOR B4........................................
CRANKSHAFT. PISTON B5.............................
WATER PUMP B6......................................
RADIATOR. HOSE B7..................................
INTAKE B8............................................
CARBURETOR B9.....................................
EXHAUST B13..........................................
CRANKCASE B14.......................................
CRANKCASE COVER 1 B15..............................
STARTER C2..........................................
CLUTCH C3...........................................
TRANSMISSION C4....................................
SHIFT CAM. FORK C6..................................
SHIFT SHAFT C7......................................
CHASSIS
FRAME C8............................................
FENDER C9...........................................
SIDE COVER C10.......................................
REAR ARM C11.........................................
REAR SUSPENSION C13................................
STEERING C15.........................................
FRONT FORK D2......................................
FUEL TANK D5........................................
SEAT D7..............................................
FRONT WHEEL D8.....................................
FRONT BRAKE CALIPER D9............................
REAR WHEEL D10......................................
REAR BRAKE CALIPER D12.............................
CONTENTS
STEERING HANDLE. CABLE D13.........................
FRONT MASTER CYLINDER D14.........................
STAND. FOOTREST D15.................................
REAR MASTER CYLINDER E2..........................
GENERATOR E3.......................................
HANDLE SWITCH. LEVER E4...........................
ELECTRICAL 1 E5.....................................
ALTERNATE (CHASSIS) E6.............................
OPTIONAL PARTS 1 E7................................
INDEX
NUMERICAL INDEX M1.................................
FIG. 1 CYLINDER HEAD
REF.
NO.
10 90116–08388 BOLT, STUD 2 2 2 2
11 99590–10114 PIN, DOWEL 2 2 2 2
12 90179–08299 NUT 4 4 4 4
13 94702–00324 PLUG, SPARK (NGK BR9EG) 1 1 1
14 5HD–1131D–10 VALVE ASSY 1 1 1 1
PART NO. DESCRIPTION REMARKS
1 5MV–11111–00 HEAD, CYLINDER 1 1 1 1 1
2 90116–08394 BOLT, STUD 5 5 5 5
3 90176–08026 NUT, CROWN 5 5 5 5
4 90201–080L8 WASHER, PLATE 5 5 5 5
5 93210–63442 O–RING 1 1 1 1
6 93210–90785 O–RING 1 1 1 1
7 5NY–11311–00 CYLINDER 1 1 1 1 1
8 5DH–11351–01 GASKET, CYLINDER 1 1 1 1
9 90116–08318 BOLT, STUD 2 2 2 2
94709–00324 PLUG, SPARK (NGK BR9EG) 1
5NY1
5NY2
5NY3
5NY4
B
15 5HD–1132D–10 VALVE ASSY 2 1 1 1 1
16 91317–05012 BOLT 4 4 4 4
17 5HD–1131V–00 SHAFT 1 1 1 1 1
18 4SS–11832–00 LEVER, LINK 1 1 1 1
19 91317–04008 BOLT 1 1 1 1
20 93104–08040 OIL SEAL 1 1 1 1
21 4SS–1131M–00 COVER 1 1 1 1
22 4JY–11166–00 PIPE, BREATHER 1 1 1 1 1
23 90467–13062 CLIP 1 1 1 1
24 4JY–11354–02 GASKET 1 1 1 1
25 98907–05016 SCREW, BIND 4 4 4 4
26 90508–16134 SPRING, TORSION 2 2 2 2
2
FIG. 1 CYLINDER HEAD
REF.
NO.
27 90387–08785 COLLAR 2 2 2 2
28 4JY–11991–01 HOUSING 1 1 1 1 1
29 4JY–11993–01 .GASKET 1 1 1 1
30 97007–05016 BOLT 4 4 4 4
31 92907–05600 WASHER, PLATE 4 4 4 4
32 4JY–11995–00 SEAL, HOUSING 1 1 1 1
PART NO. DESCRIPTION REMARKS
5NY1
5NY2
5NY3
5NY4
B
3
FIG. 2 GOVERNOR
REF.
NO.
10 93300–60801 BEARING (B0060) 2 2 2 2 KOYO
11 5X4–11921–02 SHAFT, GOVERNOR 1 1 1 1
12 5NY–11953–00 GEAR, GOVERNOR 1 1 1 1
13 90501–26001 SPRING, COMPRESSION 1 1 1 1
14 5CU–11952–00 PLATE 1 1 1 1
15 90201–150U6 WASHER, PLATE 3 3 3 3
PART NO. DESCRIPTION REMARKS
1 4JY–11915–01 PLATE, THRUST 1 1 1 1 1
2 98507–05012 SCREW, PAN HEAD 1 1 1 1
3 4SS–11990–00 PUSH ROD ASSY 1 1 1 1
4 90387–085E1 COLLAR 1 1 1 1
5 90201–057H5 WASHER, PLATE 1 1 1 1
6 97007–05012 BOLT 1 1 1 1
7 93104–08040 OIL SEAL 1 1 1 1
8 3JE–11922–01 FORK, GOVERNOR 1 1 1 1
9 91317–04006 BOLT 2 2 2 2
5NY1
5NY2
5NY3
5NY4
B
16 90387–152F2 COLLAR 1 1 1 1
17 93340–21505 BEARING 2 2 2 2
18 5CU–11912–00 RETAINER, WEIGHT 1 1 1 1
19 5CU–11911–00 RETAINER 1 1 1 1
20 93507–16020 BALL 4 4 4 4
21 93603–14240 PIN, DOWEL 1 1 1 1
22 90387–107T9 COLLAR 1 1 1 1 AP
4
FIG. 3 CRANKSHAFT. PISTON
REF.
NO.
10 4XM–11633–10 PIN, PISTON 1 1 1 1
11 93450–16068 CIRCLIP 2 2 2 2
12 93310–21510 BEARING 1 1 1 1
PART NO. DESCRIPTION REMARKS
1 5MV–11400–00 CRANKSHAFT ASSY 1 1 1 1
2 5MV–11410–00 .CRANKSHAFT 1 1 1 1
3 5MV–11420–00 .CRANKSHAFT 1 1 1 1
4 5MV–11651–00 .ROD, CONNECTING 1 1 1 1
5 3JD–11681–10 .PIN, CRANK 1 1 1 1 1
6 90209–22071 .WASHER 2 2 2 2
7 93310–522P7 .BEARING 1 1 1 1
8 5NY–11631–00–A0 PISTON (STD) 1 1 1 1 UR
5NY–11631–00–B0 PISTON (STD) 1 1 1 1 UR
5NY–11631–00–C0 PISTON (STD) 1 1 1 1 UR
5NY–11631–00–D0 PISTON (STD) 1 1 1 1 UR
9 5NY–11611–00 RING, PISTON 1 1 1 1
5NY1
5NY2
5NY3
5NY4
B
13 93306–37204 BEARING (63/22SH2–9TC4) 2 2 2 2 KOYO
14 93102–20485 OIL SEAL 1 1 1 1
15 93102–30008 OIL SEAL 1 1 1 1
16 90280–03017 KEY, WOODRUFF 1 1 1 1
5
FIG. 4 WATER PUMP
REF.
NO.
10 4JY–12428–00 GASKET, HOUSING COVER 2 1 1 1 1
11 93604–10011 PIN, DOWEL 2 2 2 2
12 95027–06065 BOLT, FLANGE 2 2 2 2
13 95027–06030 BOLT, FLANGE 2 2 2 2
14 90430–06014 GASKET 1 1 1 1
15 95027–06010 BOLT, FLANGE 1 1 1 1
PART NO. DESCRIPTION REMARKS
1 5DH–12459–01 GEAR, IMPELLER SHAFT 1 1 1 1
2 5DH–12451–00 IMPELLER, WATER PUMP 1 1 1 1
3 99001–06600 CIRCLIP 1 1 1 1
4 90201–083P5 WASHER, PLATE 1 1 1 1
5 90201–08784 WASHER, PLATE 1 1 1 1
6 93109–11073 OIL SEAL 1 1 1 1
7 93102–12106 OIL SEAL (SD 12–22–5 HS) 1 1 1 1
8 93306–00105 BEARING (B6001) 1 1 1 1
9 4JY–12422–01 COVER, HOUSING 1 1 1 1
5NY1
5NY2
5NY3
5NY4
B
6
FIG. 5 RADIATOR. HOSE
REF.
NO.
10 90450–28014 HOSE CLAMP ASSY 2 2 2 2
11 90450–22017 HOSE CLAMP ASSY 2 2 2 2
12 90450–25037 HOSE CLAMP ASSY 4 4 4 4
13 90480–15528 GROMMET 6 6 6 6
14 90387–0614M COLLAR 6 6 6 6
15 90119–06038 BOLT, WITH WASHER 6 6 6 6
PART NO. DESCRIPTION REMARKS
1 5NY–1240A–00 RADIATOR ASSY 1 1 1 1
2 91A20–05065 TUBE, FLEXIBLE VINYL 1 1 1 1
3 90467–09006 CLIP 1 1 1 1
4 5NY–12461–00 RADIATOR ASSY 1 1 1 1
5 5HD–12462–00 CAP, RADIATOR 1 1 1 1
6 5NY–12481–00 PIPE 1 1 1 1 1
7 5NY–12482–00 PIPE 2 1 1 1 1
8 5NY–12483–00 PIPE 3 1 1 1 1
9 5NY–12484–00 PIPE 4 1 1 1 1
5NY1
5NY2
5NY3
5NY4
B
16 95827–06010 BOLT, FLANGE 2 2 2 2
7
FIG. 6 INTAKE
REF.
NO.
10 90450–70072 HOSE CLAMP ASSY 1 1 1 1
11 5NY–14401–00 AIR CLEANER CASE ASSY 1 1 1 1
12 5NY–14453–00 JOINT, AIR CLEANER 1 1 1 1 1
13 5NY–14459–00 HOLDER, GUIDE 1 1 1 1
14 5NY–14455–00 BAND 1 1 1 1
15 5NY–14442–00 SPACER 1 1 1 1
PART NO. DESCRIPTION REMARKS
1 5MV–13610–00 REED VALVE ASSY 1 1 1 1
2 5MV–13613–00 .REED, VALVE 2 2 2 2
3 5MV–13616–00 .STOPPER, REED VALVE 2 2 2 2
4 98507–03006 .SCREW, PAN HEAD 6 6 6 6
5 92907–03100 .WASHER 6 6 6 6
6 5MV–13625–00 .SPACER, REED VALVE 1 1 1 1
7 5MV–13565–10 JOINT, CARBURETOR 1 1 1 1
8 95027–06020 BOLT, FLANGE 4 4 4 4
9 90450–51070 HOSE CLAMP ASSY 1 1 1 1
5NY1
5NY2
5NY3
5NY4
B
16 5NY–14417–00 COVER 1 1 1 1 1
17 90267–32070 RIVET, BLIND 3 3 3 3
18 90201–03313 WASHER, PLATE 6 6 6 6
19 4XM–14451–00 ELEMENT, AIR CLEANER 1 1 1 1
20 90209–06096 WASHER 1 1 1 1
21 90122–06035 BOLT, WING 1 1 1 1
22 3JD–14458–01 GUIDE 1 1 1 1
23 90183–06023 NUT, SPRING 4 4 4 4
24 90109–067F4 BOLT 4 4 4 4
8
FIG. 7 CARBURETOR
REF.
NO.
10 353–14186–00 .PIN, FLOAT 1 1 1 1
11 4PE–14107–38 .NEEDLE VALVE SET 1 1 1 1
12 98507–04014 .SCREW, PAN HEAD 2 2 2 2
13 4PE–14131–00 .SPRING, THROTTLE VALVE 1 1 1 1
PART NO. DESCRIPTION REMARKS
1 5NY–14101–00 CARBURETOR ASSY 1 1 1
5NY–14101–10 CARBURETOR ASSY 1 1
5NY–14101–20 CARBURETOR ASSY 1 1
2 5HD–14261–00 .HOLDER 1 1 1 1
3 4PE–14194–00 .RING 1 1 1 1
4 3MA–14159–00 .CLIP 1 1 1 1
5 3JE–14171–00 .PLUNGER, STARTER 1 1 1 1
6 3JD–14104–00 .AIR SCREW SET 1 1 1 1
7 1FN–14565–00 .SCREW 1 1 1 1
8 5ET–14261–01 .HOLDER 1 1 1 1
9 98507–04008 .SCREW, PAN HEAD 1 1 1 1
5NY1
5NY2
5NY3
5NY4
B
14 4PE–14103–00 .THROTTLE SCREW SET 1 1 1 1
15 5ET–14197–00 .PIPE 2 2 2 2
16 10V–14196–00 .PIPE 1 1 1 1
17 5ET–14185–00 .FLOAT 1 1 1 1
18 2K6–14147–00 .O–RING 1 1 1 1
19 5ET–14115–00 .PLUG, SCREW 1 1 1 1
20 284–14116–E4 .NEEDLE (6CHY5–79) 1 1 STD
284–14116–E2 .NEEDLE (6CHY5–77) 1 STD
284–14116–E5 .NEEDLE (6CHY5–80) 1 STD
284–14116–E2 .NEEDLE (6CHY5–77) 1 1 AP
284–14116–E3 .NEEDLE (6CHY5–78) 1 1 AP
284–14116–E5 .NEEDLE (6CHY5–80) 1 1 AP
9
FIG. 7 CARBURETOR
REF.
NO.
20 284–14116–E6 .NEEDLE (6CHY5–81) 1 1 AP
PART NO. DESCRIPTION REMARKS
284–14116–F2 .NEEDLE (6CHY6–77) 1 1 AP
284–14116–F3 .NEEDLE (6CHY6–78) 1 1 AP
284–14116–F4 .NEEDLE (6CHY6–79) 1 1 AP
284–14116–F5 .NEEDLE (6CHY6–80) 1 1 AP
284–14116–F6 .NEEDLE (6CHY6–81) 1 1 AP
284–14116–E0 .NEEDLE (6CHY5–75) 1 AP
284–14116–E1 .NEEDLE (6CHY5–76) 1 AP
284–14116–E3 .NEEDLE (6CHY5–78) 1 AP
284–14116–E4 .NEEDLE (6CHY5–79) 1 AP
284–14116–F0 .NEEDLE (6CHY6–75) 1 AP
284–14116–F1 .NEEDLE (6CHY6–76) 1 AP
284–14116–F2 .NEEDLE (6CHY6–77) 1 AP
284–14116–F3 .NEEDLE (6CHY6–78) 1 AP
284–14116–F4 .NEEDLE (6CHY6–79) 1 AP
5NY1
5NY2
5NY3
5NY4
B
284–14116–E3 .NEEDLE (6CHY5–78) 1 AP
284–14116–E4 .NEEDLE (6CHY5–79) 1 AP
284–14116–E6 .NEEDLE (6CHY5–81) 1 AP
284–14116–E7 .NEEDLE (6CHY5–82) 1 AP
284–14116–F3 .NEEDLE (6CHY6–78) 1 AP
248–14116–F4 .NEEDLE (6CHY6–79) 1 AP
248–14116–F5 .NEEDLE (6CHY6–80) 1 AP
284–14116–F6 .NEEDLE (6CHY6–81) 1 AP
284–14116–F7 .NEEDLE (6CHY6–82) 1 AP
21 4KM–14142–30 .JET, PILOT (#30) 1 1 1 1 STD
4KM–14142–20 .JET, PILOT (#20) 1 1 1 1 AP
4KM–14142–22 .JET, PILOT (#22.5) 1 1 1 1 AP
10
FIG. 7 CARBURETOR
REF.
NO.
21 4KM–14142–25 .JET, PILOT (#25) 1 1 1 1 AP
22 137–14143–84 .JET, MAIN (#420) 1 1 1 STD
PART NO. DESCRIPTION REMARKS
4KM–14142–27 .JET, PILOT (#27.5) 1 1 1 1 AP
4KM–14142–32 .JET, PILOT (#32.5) 1 1 1 1 AP
4KM–14142–35 .JET, PILOT (#35) 1 1 1 1 AP
4KM–14142–37 .JET, PILOT (#37.5) 1 1 1 1 AP
4KM–14142–40 .JET, PILOT (#40) 1 1 1 1 AP
137–14143–86 .JET, MAIN (#430) 1 STD
137–14143–78 .JET, MAIN (#390) 1 1 1 1 AP
137–14143–80 .JET, MAIN (#400) 1 1 1 1 AP
137–14143–82 .JET, MAIN (#410) 1 1 1 1 AP
137–14143–88 .JET, MAIN (#440) 1 1 1 1 AP
137–14143–90 .JET, MAIN (#450) 1 1 1 1 AP
137–14143–92 .JET, MAIN (#460) 1 1 1 1 AP
137–14143–86 .JET, MAIN (#430) 1 1 1 AP
5NY1
5NY2
5NY3
5NY4
B
137–14143–84 .JET, MAIN (#420) 1 AP
23 5NY–14112–57 .VALVE, THROTTLE 1 1 1 1 1 STD
5NY–14112–55 .VALVE, THROTTLE 1 1 1 1 1 AP
5NY–14112–60 .VALVE, THROTTLE 1 1 1 1 1 AP
24 5ET–1416A–00 .O–RING 1 1 1 1
25 5ET–14147–00 .O–RING 1 1 1 1
26 51R–14146–00 .PLATE 1 1 1 1
27 98502–05014 .SCREW, PAN HEAD 3 3 3 3
28 2HH–14197–00 .PIPE 2 2 2 2
29 87M–14137–00 .CLIP 3 3 3 3
30 5MV–14194–00 .RING 1 1 1 1
31 5MV–24514–00 .NET, FILTER 1 1 1 1 1
11
FIG. 7 CARBURETOR
REF.
NO.
32 5MV–14146–00 .PLATE 1 1 1 1
33 5MV–14216–00 .SCREW 1 1 1 1
34 5MV–14261–00 .HOLDER 1 1 1 1
35 5NY–14181–00 .BODY, FLOAT CHAMBER 1 1 1 1
PART NO. DESCRIPTION REMARKS
5ET–14181–10 .BODY, FLOAT CHAMBER 1 1
5NY1
5NY2
5NY3
5NY4
B
12
FIG. 8 EXHAUST
REF.
NO.
10 90201–06060 WASHER, PLATE 1 1 1 1
11 90201–06071 WASHER, PLATE 1 1 1 1
12 95027–06012 BOLT, FLANGE 1 1 1 1
13 90119–06192 BOLT, WITH WASHER 1 1 1 1
14 95027–06025 BOLT, FLANGE 1 1 1 1
15 4JY–14615–00 JOINT, EXHAUST 1 1 1 1 1
PART NO. DESCRIPTION REMARKS
1 5NY–14610–00 EXHAUST PIPE ASSY 1 1 1 1 1
2 5MV–14642–00 SEAL, EXHAUST 2 2 2 2
3 90507–20052 SPRING, TENSION 2 2 2 2
4 565–14771–00 STAY, MUFFLER 1 1 1 1 1
5 5CU–14771–00 STAY, MUFFLER 1 1 1 1 1
6 90480–16561 GROMMET 1 1 1 1
7 90387–063G3 COLLAR 1 1 1 1
8 90387–062W7 COLLAR 1 1 1 1
9 95027–06045 BOLT, FLANGE 1 1 1 1
5NY1
5NY2
5NY3
5NY4
B
16 5NY–14753–00 SILENCER, EXHAUST 1 1 1 1
17 5NY–1469A–00 .FIBER 1 1 1 1
18 92017–06010 .BOLT, BUTTON HEAD 2 2 2 2
19 95027–06025 BOLT, FLANGE 1 1 1 1
20 90201–06071 WASHER, PLATE 1 1 1 1
21 90387–063G3 COLLAR 1 1 1 1
22 90480–16561 GROMMET 1 1 1 1
23 90387–06039 COLLAR 1 1 1 1
24 90480–16404 GROMMET 1 1 1 1
13
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