Yamaha ttr230 Service Manual page 169

ENGINE MOUNTING AND ADJUSTMENTS
CYLINDER AND PISTON
1 Cylinder
2 Cylinder bolt
3 O-ring
4 Cylinder gasket
5 Dowel pins
6 O-ring
7 Piston rings
8 Piston pin locks
9 Piston
0 Piston pin
Cylinder diameter:
A 69.925~69.975 mm
Cylinder – piston clearance:
B 0.035~0.055 mm
<limit: 0,10 mm>
10N.m (1.0 Kg.m ; 7.2 ft.lb)
4-75
ENGINE
2
C USE A NEW ONE