CF MOTO CF500-5, Service Manual, Page: 64 / 254

3-17
3.Checks & Adjustment
3 3
3 3
3
VALVE CLEARANCE
Inspect initially at 20-hour break-in and every 100 hours
or every 1000km thereafter. Inspect the clearance af-
ter removing cylinder head.
Excessive valve clearance results in valve noise and
insufficient valve clearance results in valve damage and
reduced power.
Check the valve clearance at the period indicated above
and adjust the valve clearance to specification, if
necessary.
-Remove cover plate1, recoil starter2
-Remove inspection cap 3on left crankcase.
-Remove 2 valve adjusting cover 4
-Turn the crankshaft until the line5 of T.D.C. on rotor
is aligned with mark6of inspection hole on left
crankcase.
-Insert feeler gauge to check the clearance between
the valve stem end and the adjust bolt on the rocker
arm.
Valve Clearance (When cold)
IN: 0.05-0.10mm EX: 0.17-0.22mm
Note:
-The valve clearance must be adjusted when the en-
gine is cold.
-Adjust the valve clearance when the piston is at the
Top Dead Center (T.D.C.) on the compression stroke.
If the clearance is incorrect, bring it into the specified
range using the special tool.
Loosen valve adjust bolt and nut, insert a feeler gauge
(IN: 0.1mm, EX:0.2mm
)
between the valve stem end
and valve adjusting bolt, tighten valve adjust bolt, make
sure it slightly contacts the feeler gauge, tighten bolt
and nut.