Yamaha YBR125ED 2005 Service Manual page 189

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CYLINDER HEAD
5. Install:
• camshaft sprocket 1
• timing chain 2
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a. Check and adjust the "I" mark a on the
A.C. magneto rotor with the stationary
pointer b on the A.C. magneto rotor cover.
b. Align the "I" mark c on the camshaft
sprocket with the stationary pointer d on
the cylinder head.
c. Install the timing chain onto the camshaft
sprocket, and then install the camshaft
sprocket onto the camshaft.
NOTE:
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• When installing the camshaft sprocket, be
sure to keep the timing chain as tight as pos-
sible on the exhaust side.
• Align the projection e on the camshaft
sprocket with the slot in the camshaft.
CAUTION:
_
Do not turn the crankshaft when installing
the camshaft sprocket to avoid damage or
improper valve timing.
d. While holding the camshaft, temporarily
tighten the camshaft sprocket bolt.
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5 - 13
ENG
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