APRILIA LEONARDO 250 Workshop Manual page 38

LEONARDO 250 - 300
•
Check the electrode gap with a wire feeler gauge.
•
Electrode gap should be 0.7 – 0.8 mm (0.027 –
0.031 in). If it needs adjusting, bend the earth elec-
trode carefully.
•
Make sure the washer is in good condition. Fit the
washer and screw the spark plug finger-tight to
avoid damaging the thread.
•
Tighten the spark plug with the spanner you will
find in the tool kit, giving it half a turn to compress
the washer.
WARNING
The spark plug must be well tightened, oth-
erwise the engine may overheat and be se-
riously damaged.
Use recommended spark plugs only. A
spark plug of the wrong grade may shorten
engine life and cause loss of performance.
•
Position the spark plug cap (1) properly, so that it
does not come off due to the vibrations of the en-
gine.
DANGER
Ensure the spark plug cap (1) is properly in
place on the spark plug (2).
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