Camshaft Chain Guide; Cylinder And Piston - Yamaha TT600R Service Manual

C
Y
X
INSPECTION AND REPAIR

CAMSHAFT CHAIN GUIDE

1. Inspect:
•
Side chain guide (exhaust) (1)
•
Side chain guide (intake) (2)
Wear/Damage

CYLINDER AND PISTON

1. Inspect:
•
Piston and cylinder walls
Vertical scratches
liner and piston.
2. Measure:
•
Piston-cylinder clearance
Measurement steps:
First step
•
Measure cylinder bore "C" with a cylinder
gauge.
(1) 50 mm from top of cylinder
NOTE:
Measure bore parallel and at right angles to the
driving shaft. Then calculate average measure-
ment.
Cylinder
bore "C"
•
If the measurements are out of tolerance,
replace the cylinder liner, piston and circlips
all together.
Second step
•
Measure diameter "P" of the piston skirt with a
micrometer.
(1) 5 mm from the lower edge of the piston
Piston "P" size:
Standard
5-30
ENG
Replace.
Replace cylinder
Standard
94.97 ~ 95.02 mm 95.1 mm
C = X + Y
2
94.915 ~ 94.965 mm
Wear
limit