Yamaha EH63 - Checking the Valve Lifters; Installing the Valve Lifters and Camshaft; Checking the Crankcase Cover

PISTONS, CAMSHAFT, CRANKCASE, AND CRANKSHAFT
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ENGINE
CHECKING THE VALVE LIFTERS
1. Check:
• Valve lifter
Damage  Replace.
INSTALLING THE VALVE LIFTERS AND
CAMSHAFT
1. Install:
• Intake valve lifters “1”
• Exhaust valve lifters “2”
2. Install:
• Camshaft “1”
CHECKING THE CRANKCASE COVER
1. Check:
• Crankcase cover
Damage  Replace.
• Bearing
Noise/wear/rotational failure  Replace.
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b
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b
• Since there are two types of camshafts, refer to the
illustration and check the camshaft gear mark.
• Be sure to align the camshaft “1” gear mark “a” with
the crankshaft gear mark “b”.
• After installing the intake and exhaust valves, rotate
the crankshaft clockwise and check that there is no
contact with the valves when the piston arrives at
TDC (top-dead-center) on the compression stroke.
NOTICE