Yamaha MM600D Service Manual page 126

CYLINDER HEAD AND CYLINDER
12. Measure:
•
SEJ5200
13. Measure:
•
Piston pin-to-piston clearance =
Bore size (piston pin) b –
Outside diameter (piston pin) a
SEJ5210
14. Inspect:
•
SEJ5220
15. Measure:
•
SEJ5230
16. Measure:
•
SEJ5240
5-11
ENG
Outside diameter (piston pin) a
Out of specification → Replace the piston
pin.
Outside diameter (piston pin) a:
19.995 ~ 20.000 mm
(0.7872 ~ 0.7874 in)
Piston pin-to-piston clearance
Out of specification → Replace the piston.
Piston pin-to-piston clearance =
0.009 ~ 0.015 mm
(0.000354 ~ 0.000591 in)
Reed valves 1
Bends/cracks/damage → Replace.
Valve stopper height a
Out of specification → Replace the valve
stopper.
Valve stopper height a:
10.4 ~ 10.8 mm (0.41 ~ 0.43 in)
Reed valve bending limit a
Out of specification → Replace the reed
valve.
Reed valve bending limit a:
less than 0.3 mm (0.012 in)