PERIODIC MAINTENANCE
2-5
VALVE CLEARANCE
Inspect initially at
1
month and every
6
months there-
after.
Excessive valve clearance results in valve noise and insufficient
valve clearance results in valve damage and reduced power.
Check the intake and exhaust valve clearances at the distances
indicated above and adjust the valve clearances to specification.
if necessary.
Remove the seat.
(U7-6)
Remove the side covers, fuel tank cover and front fender.
(-7-6)
I
Remove the fuel tank and fuel tank lower cover.
(W5-4)
.L--
,''<
,
./
'
-;
\,
*
Remove the spark plug cap and spark plug.
(D2-10)
*
Disconnect the breather hose
rtl
and oil tank over-flow hose
(3,
Remove the cylinder head cover
0).
The valve clearance specification is different for intake and
exhaust valves.
Valve clearance must be checked and adjusted,
I)
at the time of
.
,
.,
periodic inspection.
2)
when the valve mechanism is serviced,
,
and
3)
when the camshafts are removed for servicing.
Remove the valve timing inspection plug
(41
and generator
cover cap
(3.
NOTE:
The piston must be at top dead center
(TDC)
on the cornpres-
sion stroke
in
order to check or adjust the tappet clearance.
*
The tappet clearance should only be checked when the engine
is cold.
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