Installing The Valves And Valve Springs - Yamaha EH63 Service Manual

VALVES
1
2
6
3
4
5
6
7
6
8
9
10

INSTALLING THE VALVES AND VALVE SPRINGS

The following procedure applies to all of the valves, valve
springs and related components.
1.
5
4
3
2
1
2.
5
4
3
2
1
NOTICE
Do not compress the valve spring more than neces-
sary.
TIP
When installing the valve stem seal, do so in such a way
a that the outer spring "a" does not come off.
NOTICE
After installing the valves, rotate the crankshaft clock-
wise and check that there is no contact with the valves
when the piston arrives at TDC (top-dead-center) on
the compression stroke.
Install the parts below on the intake side.
• Intake valve "1"
• Valve stem seal "2"
• Valve spring "3"
• Valve spring retainer "4"
• Valve cotter "5"
Install the parts using the valve spring compressor
"6".
Valve spring compressor:
90890-01253
Install the parts below on the exhaust side.
• Exhaust valve "1"
• Valve spring seat "2"
• Valve spring "3"
• Valve spring retainer "4"
• Valve cotter "5"
Install the parts using the valve spring compressor
"6".
Valve spring compressor:
90890-01253
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