2-5 PERIODIC MAINTENANCE AND TUNE-UP PROCEDURES
VALVE CLEARANCE
inspect every
6000
km (4000 miles or 12 months).
Valve clearance also must be checked and adjusted when:
(1)
the valve mechanism is serviced, and
(2) the camshaft are disturbed by removing them for servicing.
Excessive valve clearance results in valve noise and insufficient
valve clearance results in valve damage and reduced power.
Check and adjust the clearance to the specification.
Valve clearance (when cold)
:
IN. & EX. 0.08 - 0.13 mm
(0.003 - 0.005 in)
NOTE:
* The clearance specification is for COLD state.
* Both intake and exhaust valves must be checked and adjust-
ed when the piston is at Top Dead Center (TDCI of the
compression stroke.
l
Remove the seat and the fuel tank.
l
Remove the following parts.
@ Front side air cleaner, carburetor and outlet tube
@Valve inspection caps
@ Generator cover plug
@Timing inspection plug
@Spark plugs
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