Yamaha YFM4FAR Service Manual page 144

CYLINDER HEAD
NOTE:
Be sure the "I" mark 5 on the camshaft
sprocket is aligned with the match mark 2 on
the cylinder head.
G
Force the
counterclockwise to remove timing chain slack.
G
Insert a screwdriver into the timing chain
tensioner hole and push the timing chain
guide inward.
G
While pushing the timing chain guide, be sure
that the camshaft sprocket "I" mark 5 is
aligned with the cylinder head match mark 2.
G
If the marks are aligned, tighten the camshaft
sprocket bolt. If the marks are not aligned,
change the meshing position of the camshaft
sprocket and timing chain.
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3.Install:
Timing chain tensioner
G
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Installation steps:
Remove the tensioner cap bolt 1, washer 2
G
and spring 3.
G
Release the timing chain tensioner one-way
cam 4 and push the tensioner rod 5 all the
way in.
Install the tensioner 6 with a new gasket into
G
the cylinder.
Bolts (timing chain tensioner):
11 Nm (1.1 m • kg, 8.0 ft • lb)
WARNING
Always use a new gasket.
G
Install the spring, washer and cap bolt.
Cap bolt (timing chain tensioner):
23 Nm (2.3 m • kg, 17 ft • lb)
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4 - 14
ENG
camshaft clockwise and