Piston. Piston Ring. And Piston Pin - Yamaha VMX12H Supplementary Service Manual

I NSPECTI O N AND REPAI R
m m
C am C hai n Tensi oner
1. Check:
cam oper at i on
Unsm oot h oper at i on
2. I nspect :
* Al l par t s
Dam age/ W ear Repl ace.
End Pl ug
W asher
Spri ng
C YLI N D ER
1. I nspect :
* Cyl i nder wal l
W ear / Scr at ches Rebor e or r epl ace.
2. Measur e:
bor e "C"
Use t he Cyl i nder Bor e Gauge
Out of speci f i cat i on
C M axi m um D
T M axi m um or
M i ni m um or
PI STO N , PI STO N R I N G , A N D PI STO N PI N
P iston
1. I nspect :
* Pi st on wal l
W ear / Scr at ches/ Dam age
2. Measur e:
• Pi st on out si de di am et er " P"
Use a Mi cr om et er ,
Out of speci f i cat i on
Repl ace.
Tensi oner body
O ne w ay cam
Tensioner rod
Rebor e.
Repl ace.
Repl ace.