2002 YAMAHA YZ125LC instrument

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Page 39 of 564

YAMAHA YZ125LC 2002  Owners Manual 1-8
GEN
INFO
SPECIAL TOOLS
Part number Tool name / How to use IIIustration
YU-24460-01, 90890-01325Radiator cap testerYU-24460-01 90890-01325
YU-33984, 90890-01352 AdapterYU-33984 90890-01352
These to

Page 252 of 564

YAMAHA YZ125LC 2002  Owners Manual 4-20
ENGCYLINDER HEAD, CYLINDER AND PISTON
EC474000
INSPECTION
EC474101
Cylinder head
1. Remove:
9Carbon deposits
Use a rounded scraper 1.
NOTE:
Take care to avoid damaging the spark plug
threads. Do

Page 253 of 564

YAMAHA YZ125LC 2002  Owners Manual 4-20
ENG
CULASSE, CYLINDRE ET PISTON
ZYLINDERKOPF, ZYLINDER UND KOLBEN
TESTA CILINDRO, CILINDRO E PISTONE
INSPEKTION
Zylinderkopf
1. Ausbauen:
9Ölkohleablagerungen
Einen abgerundeten Schaber
1verwend

Page 262 of 564

YAMAHA YZ125LC 2002  Owners Manual 4-25
ENGCYLINDER HEAD, CYLINDER AND PISTON
EC474830
Power valve
1. Inspect:
9Power valve 1,2 1
Wear/Damage Replace.
Carbon deposits Remove.
9Link lever 2
9Valve shaft 3
9Collar 4
Wear/Damage Replac

Page 263 of 564

YAMAHA YZ125LC 2002  Owners Manual 4-25
ENG
CULASSE, CYLINDRE ET PISTON
ZYLINDERKOPF, ZYLINDER UND KOLBEN
TESTA CILINDRO, CILINDRO E PISTONE
REMONTAGE ET 
MONTAGE
Clapet de puissance
1. Monter:
9Clapet de puissance 1 1
9Clapet de puiss