Yamaha T135SE Service Manual page 120

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Yamaha T135 Service Manual
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CYLINDER HEAD
3. Tighten:
9cylinder head bolts
9cylinder head bolts
9engine mount nut
NOTE:
9Lubricate the cylinder head bolts with engine
oil.
9Tighten the cylinder head bolts in the proper
tightening sequence as shown and torque
them in two stages.
4. Install:
9camshaft sprocket 1
9timing chain 2
MMMMMMMMMMMMMMMMMMMMMMMM
a. Turn the crankshaft clockwise.
b. Align the "I" mark a on the generator rotor
with the stationary pointer b on the
crankcase.
c. Align the "I" mark c on the camshaft
sprocket with the stationary pointer d on
the cylinder head.
d. Install the timing chain onto the camshaft
sprocket, and then install the camshaft
sprocket onto the camshaft.
NOTE:
9When installing the camshaft sprocket, be sure
to keep the timing chain as tight as possible on
the exhaust side.
9Align the projection c on the camshaft sprock-
et with the slot in the camshaft.
cC
Do not turn the crankshaft when installing
the camshaft to avoid damage or improper
valve timing.
e. While holding the camshaft, temporarily
tighten the camshaft sprocket bolt.
f. Remove the wire from the timing chain.
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4-14
ENG
22 Nm (2.2 m·kg, 16 ft•lb)
10 Nm (1.0 m•kg, 7.2 ft•lb)
72 Nm (7.2 m•kg, 52 ft•lb)