YAMAHA YZ80LW, YZ80N, YZ80 PARTS CATALOGUE 00-1

YZ80N

(4ESA)

U.S.A.,CANADA,EUROPE,SOUTH AFRICA

YZ80
YZ80LW
YZ80LW

(4ESC)
(4LC8)
(4LCA)

JAPAN

EUROPE

JAPAN

A

214ES–100E1

2

A

3

FOREWORD

This Parts Catalogue is relatedtotheparts forthemodel(s)inthebelowframe. When you are
orderingreplacementparts,pleaserefertothisParts Catalogueandquotebothpartnumbersand
part names correctly.

YZ80N(4ESA),YZ80(4ESC),YZ80LW(4LC8/4LCA)

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. 2 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.

A

4

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

4ESA

4ESC 010 JAPAN

4LC8

Production

Code No.

010 U.S.A. 4LC8 070 SWEDEN
020 CANADA 4LCA 010 JAPAN
030 GERMANY
040 SPAIN
050 FRANCE
060 ENGLAND
070 ITALY
090 SWEDEN
100

020 GERMANY
030 SPAIN
040 FRANCE
050 ENGLAND

Country

(destination)

SOUTH AFRICA

Model

Code

Production

Code No.

(destination)

Country

(5) Colouring Information

Model

Code

4ESA

4ESC

4LC8

4LCA

A

5

060 ITALY

Colouring type

code

A 0583

Colour

code

Colour Name Abbreviation

DEEP PURPLISH BLUE

DEEP PURPLISH BLUE

SOLID E

DPBSE

FIG. 1 CYLINDER

REF.
NO.

10 90116–08318 BOLT, STUD 2 2 2 2
11 90116–08388 BOLT, STUD 2 2 2 2
12 99530–10114 PIN, DOWEL 2 2 2 2
13 90179–08299 NUT 4 4 4 4

PARTNO. DESCRIPTION REMARKS

1 4LC–11111–00 HEAD, CYLINDER 1 1 1 1 1
2 94702–00368 PLUG, SPARK (NGK BR10EG) 1 1

90793–20136 PLUG, SPARK (NGK BR10EG) 1 1
3 93210–56459 O–RING 1 1 1 1
4 93210–84724 O–RING 1 1 1 1
5 90116–08394 BOLT, STUD 4 4 4 4
6 90176–08026 NUT, CROWN 4 4 4 4
7 90201–08087 WASHER, PLATE 4 4 4 4
8 4ES–11311–10 CYLINDER 1 1 1 1 1
9 4ES–11351–00 GASKET, CYLINDER 1 1 1 1

4ESA

4ESC

4LC8

4LCA

B

2

FIG. 2 CRANKSHAFT. PISTON

REF.
NO.

10 43K–11611–00 RING, PISTON 1 1 1 1
11 93450–16115 CIRCLIP 2 2 2 2
12 93310–214F8 BEARING 1 1 1 1 KOYO

PARTNO. DESCRIPTION REMARKS

1 4ES–11400–02 CRANKSHAFT ASSY 1 1 1 1
2 4ES–11412–00 .CRANK 1 1 1 1 1
3 4ES–11422–00 .CRANK 2 1 1 1 1
4 4ES–11651–01 .ROD, CONNECTING 1 1 1 1
5 93310–320T3 .BEARING 1 1 1 1
6 2RA–11681–00 .PIN, CRANK 1 1 1 1 1
7 90209–20159 .WASHER 2 2 2 2
8 4ES–11631–01–A0 PISTON (STD) 1 1 1 1 UR RED

4ES–11631–01–B0 PISTON (STD) 1 1 1 1 UR ORANGE

4ES–11631–01–C0 PISTON (STD) 1 1 1 1 UR GREEN

4ES–11631–01–D0 PISTON (STD) 1 1 1 1 UR PURPLE
9 4ES–11633–00 PIN, PISTON 1 1 1 1

4ESA

4ESC

4LC8

4LCA

B

13 90280–03017 KEY, WOODRUFF 1 1 1 1
14 93306–20438 BEARING 1 1 1 1
15 93306–30421 BEARING (B6304C3) 1 1 1 1
16 93103–28126 OIL SEAL 1 1 1 1
17 93102–20447 OIL SEAL 1 1 1 1

3

FIG. 3 WATER PUMP

REF.
NO.

10 95827–06060 BOLT, FLANGE 1 1 1 1
11 95027–06025 BOLT, FLANGE 2 2 2 2

PARTNO. DESCRIPTION REMARKS

1 4ES–12459–00 GEAR, IMPELLER SHAFT 1 1 1 1
2 36F–12450–00 IMPELLER SHAFT ASSY 1 1 1 1
3 93103–10147 OIL SEAL 1 1 1 1
4 90201–08512 WASHER, PLATE 2 2 2 2
5 93603–22028 PIN, DOWEL 1 1 1 1
6 99001–07600 CIRCLIP 1 1 1 1
7 4BA–12422–00 COVER, HOUSING 1 1 1 1
8 4BA–12428–00 GASKET, HOUSING COVER 2 1 1 1 1
9 90430–06166 GASKET 1 1 1 1

4ESA

4ESC

4LC8

4LCA

B

4

FIG. 4 RADIATOR. HOSE

REF.
NO.

10 90480–15528 GROMMET 3 3 3 3
11 90387–0614M COLLAR 3 3 3 3
12 437–83936–01 BAND, SWITCH CORD 1 1 1 1

PARTNO. DESCRIPTION REMARKS

1 4ES–12461–10 RADIATOR ASSY 1 1 1 1
2 5HD–12462–00 CAP, RADIATOR 1 1 1 1
3 22W–12463–00 PIPE, BREATHER 1 1 1 1
4 90467–08002 CLIP 1 1 1 1
5 4ES–12481–00 PIPE 1 1 1 1 1
6 4ES–12482–00 PIPE 2 1 1 1 1
7 90450–28014 HOSE CLAMP ASSY 4 4 4 4
8 90201–06071 WASHER, PLATE 3 3 3 3
9 95027–06030 BOLT, FLANGE 3 3 3 3

4ESA

4ESC

4LC8

4LCA

B

5

FIG. 5 INTAKE

REF.
NO.

10 4ES–14453–00 JOINT, AIR CLEANER 1 1 1 1 1
11 4ES–14459–00 HOLDER, GUIDE 1 1 1 1
12 4ES–14462–00 .SEAL 1 1 1 1
13 97707–50014 SCREW, TAPPING 5 5 5 5
14 90450–99064 HOSE CLAMP ASSY 1 1 1 1
15 4ES–14411–01 CASE, AIR CLEANER 1 1 1 1 1

PARTNO. DESCRIPTION REMARKS

1 4ES–13610–00 REED VALVE ASSY 1 1 1 1
2 4ES–13613–00 .REED, VALVE 2 2 2 2
3 4ES–13616–00 .STOPPER, REED VALVE 2 2 2 2
4 98507–03008 .SCREW, PAN HEAD 4 4 4 4
5 92907–03100 .WASHER 4 4 4 4
6 4ES–13565–00 JOINT, CARBURETOR 1 1 1 1
7 95027–06020 BOLT, FLANGE 4 4 4 4
8 90450–45075 HOSE CLAMP ASSY 1 1 1 1
9 90460–51059 CLAMP, HOSE 1 1 1 1

4ESA

4ESC

4LC8

4LCA

B

16 4ES–14417–00 .COVER 1 1 1 1 1
17 90267–40077 .RIVET, BLIND 2 2 2 2
18 90201–047A2 .WASHER,PLATE 2 2 2 2
19 92907–04600 .WASHER 2 2 2 2
20 4ES–14451–00 ELEMENT, AIR CLEANER 1 1 1 1
21 4ES–14458–00 GUIDE 1 1 1 1
22 90209–06096 WASHER 1 1 1 1
23 90122–06038 BOLT, WING 1 1 1 1
24 90464–16039 CLAMP 1 1 1 1

6

FIG. 6 CARBURETOR

REF.
NO.

10 137–14143–60 .JET, MAIN (#300) 1 1 1 1 STD

PARTNO. DESCRIPTION REMARKS

1 4ES–14101–10 CARBURETORASSY 1 1 1 1 1
2 304–14184–00 .GASKET, FLOAT CHAMBER 1 1 1 1
3 260–14142–32 .JET, PILOT (# 32.5) 1 1 1 1 STD

260–14142–30 .JET, PILOT (# 30) 1 1 1 1 AP

260–14142–35 .JET, PILOT (# 35) 1 1 1 1 AP
4 23L–14107–25 .NEEDLE VALVE SET 1 1 1 1
5 127–14186–00 .PIN, FLOAT 1 1 1 1
6 58T–1490J–00 .NEEDLE SET 1 1 1 1
7 93210–18288 .O–RING 1 1 1 1
8 3R1–14115–00 .PLUG, SCREW 1 1 1 1
9 3R1–14141–52 .NOZZLE, MAIN 1 1 1 1 STD

3R1–14141–50 .NOZZLE, MAIN 1 1 1 1 AP

3R1–14141–54 .NOZZLE, MAIN 1 1 1 1 AP

137–14143–58 .JET, MAIN (#290) 1 1 1 1 AP

4ESA

4ESC

4LC8

4LCA

B

137–14143–62 .JET, MAIN (#310) 1 1 1 1 AP

11 314–14185–00 .FLOAT 1 1 1 1
12 31J–14103–00 .THROTTLE SCREW SET 1 1 1 1
13 10V–14196–00 .PIPE 1 1 1 1
14 98507–04018 .SCREW, PAN HEAD 4 4 4 4
15 92907–04100 .WASHER, SPRING 4 4 4 4
16 22W–14106–00 .CABLE ADJUST SCREW SET 1 1 1 1
17 3X3–14169–00 .CAP 1 1 1 1
18 39K–14153–00 .WASHER, MAIN JET 1 1 1 1
19 2X6–14112–30 .VALVE, THROTTLE 1 1 1 1 1 STD

2X6–14112–25 .VALVE, THROTTLE 1 1 1 1 1 AP

2X6–14112–35 .VALVE, THROTTLE 1 1 1 1 1 AP

7

FIG. 6 CARBURETOR

REF.
NO.

20 248–14131–00 .SPRING, THROTTLE VALVE 1 1 1 1
21 2A6–14126–00 .GASKET 1 1 1 1
22 2A6–14158–00 .TOP, MIXING CHAMBER 1 1 1 1
23 3SB–14171–00 .PLUNGER, STARTER 1 1 1 1
24 10W–14104–00 .AIR SCREW SET 1 1 1 1
25 25G–14937–00 .CLIP 2 2 2 2
26 3JN–14196–00 .PIPE 1 1 1 1
27 3Y1–14197–00 .PIPE 1 1 1 1

PARTNO. DESCRIPTION REMARKS

4ESA

4ESC

4LC8

4LCA

B

8

FIG. 7 EXHAUST

REF.
NO.

10 95027–06012 BOLT, FLANGE 2 2 2 2
11 4ES–14753–10 SILENCER, EXHAUST 1 1 1 1
12 4ES–1469A–00 .FIBER 1 1 1 1
13 90480–16561 GROMMET 1 1 1 1
14 90387–063G3 COLLAR 1 1 1 1
15 95027–06025 BOLT, FLANGE 1 1 1 1

PARTNO. DESCRIPTION REMARKS

1 4ES–14610–10 EXHAUST PIPE ASSY 1 1 1 1 1
2 90201–33299 WASHER, PLATE 1 1 1 1
3 90480–18411 GROMMET 1 1 1 1
4 90387–105L0 COLLAR 1 1 1 1
5 90201–060A3 W ASHER,PLATE 1 1 1 1
6 95027–06025 BOLT, FLANGE 1 1 1 1
7 93210–371A9 O–RING 1 1 1 1
8 90507–20030 SPRING, TENSION 1 1 1 1
9 565–14771–00 STAY, MUFFLER 1 1 1 1 1

4ESA

4ESC

4LC8

4LCA

B

16 17W–14615–00 JOINT, EXHAUST 1 1 1 1 1

9

FIG. 8 CRANKCASE

REF.
NO.

PARTNO. DESCRIPTION REMARKS

1 4ES–15111–00 CRANKCASE 1 1 1 1 1
2 4ES–15121–02 CRANKCASE 2 1 1 1 1
3 99530–10014 PIN, DOWEL 2 2 2 2
4 98507–06040 SCREW, PAN HEAD 3 3 3 3
5 98507–06050 SCREW, PAN HEAD 5 5 5 5
6 98507–06060 SCREW, PAN HEAD 3 3 3 3
7 120–15371–00 BREATHER 1 1 1 1
8 90446–07349 HOSE 1 1 1 1

4ESA

4ESC

4LC8

4LCA

B

10

FIG. 9 CRANKCASE COVER 1

REF.
NO.

10 90430–08119 GASKET 1 1 1 1
11 3Y1–15363–00 PLUG, OIL 1 1 1 1
12 93210–19123 O–RING 1 1 1 1

PARTNO. DESCRIPTION REMARKS

1 4ES–15411–00 COVER, CRANKCASE 1 1 1 1 1
2 98507–06030 SCREW, PAN HEAD 4 4 4 4
3 4ES–15451–00 GASKET, CRANKCASE COVER 1 1 1 1 1
4 4ES–15421–01 COVER, CRANKCASE 2 1 1 1 1
5 4ES–15461–00 GASKET, CRANKCASE COVER 2 1 1 1 1
6 99530–10014 PIN, DOWEL 2 2 2 2
7 95027–06030 BOLT, FLANGE 4 4 4 4
8 95027–06040 BOLT, FLANGE 1 1 1 1
9 95027–08080 BOLT, FLANGE 1 1 1 1

4ESA

4ESC

4LC8

4LCA

B

11

FIG. 10 STARTER

REF.
NO.

10 99009–12400 CIRCLIP 1 1 1 1
11 4ES–15620–00 KICK CRANK ASSY 1 1 1 1
12 4ES–15621–00 .BOSS, KICK CRANK 1 1 1 1
13 93507–32009 .BALL 1 1 1 1
14 90501–12081 .SPRING, COMPRESSION 1 1 1 1
15 90201–12631 .WASHER, PLATE 1 1 1 1

PARTNO. DESCRIPTION REMARKS

1 4ES–15660–00 KICK AXLE ASSY 1 1 1 1
2 4ES–15641–00 GEAR, KICK 1 1 1 1
3 90468–23194 CLIP 1 1 1 1
4 90201–176L4 WASHER, PLATE 1 1 1 1
5 90508–26750 SPRING, TORSION 1 1 1 1
6 4ES–15664–00 GUIDE, SPRING 1 1 1 1
7 93102–17263 OIL SEAL 1 1 1 1
8 4ES–15651–00 GEAR, KICK IDLE 1 1 1 1
9 90201–124F8 WASHER, PLATE 2 2 2 2

4ESA

4ESC

4LC8

4LCA

B

16 93430–08007 .CIRCLIP 1 1 1 1
17 95027–06012 BOLT, FLANGE 1 1 1 1
18 90201–06060 WASHER, PLATE 1 1 1 1

12