Yamaha YFM450FAR Service Manual page 79

ADJUSTING THE VALVE CLEARANCE
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8.Adjust:
Valve clearance
G
*****************************************************
Adjustment steps:
Loosen the locknut 1.
G
Insert a feeler gauge 2 between the adjuster
G
end and the valve end.
G
Turn the adjuster
counterclockwise with the valve adjusting
tool 4 until the proper clearance is obtained.
Tappet adjusting tool:
P/N. YM-08035, 90890-01311
G
Hold the adjuster to prevent it from moving
and then tighten the locknut.
Locknut:
20 Nm (2.0 m • kg, 14 ft • lb)
G
Measure the valve clearance.
G
If the clearance is incorrect, repeat the above
steps until the proper clearance is obtained.
*****************************************************
9.Install:
All removed parts
G
NOTE:
Install all removed parts in the reverse order of
their disassembly. Note the following points.
10.Install:
Recoil starter
G
Spark plug
G
Tappet covers
G
NOTE:
Install the tappet covers with the ridge facing
up È.
3 - 12
CHK
ADJ
3
clockwise
LT
10 Nm (1.0 m • kg, 7.2 ft • lb)
18 Nm (1.8 m • kg, 13 ft • lb)
10 Nm (1.0 m • kg, 7.2 ft • lb)
or