Installing The Cylinder Head - Yamaha XC50V Service Manual

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CYLINDER HEAD
EAS00231

INSTALLING THE CYLINDER HEAD

1. Install:
8 gasket
New
8 dowel pins
2. Install:
8 cylinder head
3. Tighten:
8 cylinder head nuts
10 Nm (1.0 m • kg, 7.2 ft • lb)
8 cylinder head bolts
10 Nm (1.0 m • kg, 7.2 ft • lb)
NOTE:
8 Lubricate the cylinder head nuts with en-
gine oil.
8 Tighten the cylinder head nuts in the proper
tightening sequence as shown and torque
them in two stages.
4. Install:
8 camshaft sprocket 1
8 timing chain 2
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a. Turn the primary pulley counterclockwise.
Align the "I" mark a on the AC magneto
b.
rotor with the stationary pointer b on the
crankcase cover.
Align the "I" mark c on the camshaft
c.
sprocket with the stationary pointer d on
the plate.
d. Install the timing chain onto the camshaft
sprocket, and then install the camshaft
sprocket onto the camshaft.
NOTE:
8 When installing the camshaft sprocket, be
sure to keep the timing chain as tight as
possible on the exhaust side.
8 Align the slot on the camshaft with the tab
in the camshaft sprocket.
5-9
ENG