Drive Sprocket - Yamaha JT1 Series Service Manual

3) When the valve collar is installed. care should be
taken not to nick the crankshaft 0-ring.
If
it
is found nicked, replace
it.
It is advisable to
grease. the surface of the inner collar and the outer
surface of the 0-rmg.
4)When 1nstalltng the valve cover. applygood quality
grease to the lip so 1t will slip easily over the shaft.
3-14 Drive Sprocket
A. Removal
1)
$tra1ghten the bent edge of the lock washer with a
blunt-ended metal punch.
(Flat chisel)
F,g. 3-13-6
F,g 3-13-7
Fig. 3-14-1
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ENGINE·
Rotary Valve, Drive Sprocket