2005 YAMAHA YZ125LC Notices Demploi (in French)

Page 257 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 4-22
ENG
CULASSE, CYLINDRE ET PISTON
ZYLINDERKOPF, ZYLINDER UND KOLBEN
TESTA CILINDRO, CILINDRO E PISTONE
2. Misurare:
9Diametro esterno dello spinotto
Usare un micrometro 1
Fuori limiteSostituirlo.

Page 258 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 4-23
ENGCYLINDER HEAD, CYLINDER AND PISTON
EC474502
Piston ring
1. Install:
9Piston ring
Into the cylinder.
Push the ring with the piston crown.
2. Measure:
9End gap
Use a thickness gauge 1.
Out of li

Page 259 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 4-23
ENG
CULASSE, CYLINDRE ET PISTON
ZYLINDERKOPF, ZYLINDER UND KOLBEN
TESTA CILINDRO, CILINDRO E PISTONE
3. Misurare:
9Gioco laterale
Usare uno spessimetro 1
Fuori limiteSostituire il pisto-
ne e/o

Page 260 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 4-24
ENGCYLINDER HEAD, CYLINDER AND PISTON
EC474700
Combination of piston and cylinder
1. Check:
9Cylinder mark a
2. Check:
9Piston mark a
3. Combination:
Combine the piston and cylinder by the fol-
l

Page 261 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 4-24
ENG
CULASSE, CYLINDRE ET PISTON
ZYLINDERKOPF, ZYLINDER UND KOLBEN
TESTA CILINDRO, CILINDRO E PISTONE
Kombination von Kolben und 
Zylinder
1. Kontrollieren:
9Zylindermarkierung a
2. Kontrollieren:

Page 262 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 4-25
ENGCYLINDER HEAD, CYLINDER AND PISTON
EC474831
Power valve
1. Inspect:
9Power valve 1,2 1
Wear/Damage Replace.
Carbon deposits Remove.
9Valve holder 2
9Link lever 3
9Valve shaft 4
9Collar 5
Wea

Page 263 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 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

Page 264 of 568

YAMAHA YZ125LC 2005  Notices Demploi (in French) 4-26
ENGCYLINDER HEAD, CYLINDER AND PISTON
2. Install:
9Spring 1
9Link lever 2
9Collar 3
9Valve shaft 4
9Valve holder 5
9Bolt (link lever) 6
NOTE:
9Install the spring to the link lever, and then to
th