Yamaha TT-R125EY Service Manual page 110

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CYLINDER HEAD
3. Install:
• Timing chain
• Camshaft sprocket
Installation steps:
• Turn the crankshaft counterclockwise with
a wrench.
• Align the I mark a on the rotor with the
stationary pointer b on the crankcase
cover.
• Align the match mark c on the camshaft
sprocket with the stationary pointer d on
the cylinder head.
• Fit the timing chain 1 onto camshaft
sprocket 2 and install the camshaft
sprocket on the camshaft.
TIP
When installing the camshaft sprocket, keep
the timing chain as tense as possible on the
exhaust side.
NOTICE
Do not turn the crankshaft during
installation of the camshaft. Damage or
improper valve timing will result.
• Remove the safety wire from the timing
chain.
4. Install:
• Washer
• Bolt (camshaft sprocket)
TIP
Temporarily tighten the bolt (camshaft sprocket)
at this point.
4-17
ENG

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