ENGINE
19
7
Fig.
7L
Fig.
7M
Fig.
7K
ATTENTION:
Service more frequently when
riding under hard conditions
7 D
VALVES:
The clearances between the valve adjustment
screws and the valve stems have to be checked
after 2 hours of operation if the engine is brand
new or any parts of the valves, valve seats or
rockerarms have been changed.
The interval between the checks of the clearences
is after that every 10 hours (Motocross, Super
Motard Competition and Cross Country models)
or 20 hours (all other models).
Valve adjustment:
Remove the fuel tank (see "FUEL & COOLING
- FUEL").
Put the engine in TDC position on compression
stroke: Remove the ignition cover, install a dial
indicator into the spark plug hole (Fig. 7K-1) and
turn the flywheel (wrench No. 17), clockwise, in
order to find the upper position of the piston.
Remove the two valve inspection covers (Fig.
7L-1, 2, allen key No. 4) including the gaskets.
Check the clearances of the valves; 0.10 mm on
both the intake valves as well as the exhaust
valves. Adjust if necessary by releasing the lock
nut (Fig. 7M-1, wrench No. 10) and then by
adjusting the screw (Fig. 7M-2) into the adequate
clearance.
Refit in the reverse order of disassembly.
Replace the gaskets of the inspection covers if
necessary.
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