Yamaha T135S, Service Manual

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4-14
ENG
CYLINDER HEAD
4
1
2
3
5
6
1
2
a
b
c
d
3. Tighten:
9
cylinder head bolts
9
cylinder head bolts
9
engine mount nut
NOTE:
9
Lubricate the cylinder head bolts with engine
oil.
9
Tighten the cylinder head bolts in the proper
tightening sequence as shown and torque
them in two stages.
4. Install:
9
camshaft sprocket
1
9
timing chain
2
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
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:
9
When installing the camshaft sprocket, be sure
to keep the timing chain as tight as possible on
the exhaust side.
9
Align the projection
c
on the camshaft sprock-
et with the slot in the camshaft.
c C
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.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
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)
5YP-F8197-E0_4_1 05.6.27 19:32 Page 14
Yamaha T135 Service Manual
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