APRILIA SCARABEO 500 - 2008, Service Station Manual

Page: 45 / 324

•
Disconnect the caps «3» of the high
voltage cables from the spark plug.
•
Clean off any trace of dirt from the
spark plug base by blowing com-
pressed air. Unscrew the spark plugs
and remove them from their seat, being
careful not to let dust or any other sub-
stance come into the cylinder.
•
Check that the spark plug electrode
and the centre porcelain are free of
carbon deposits or signs of corrosion.
If necessary, clean using suitable
spark plug cleaners, a wire and/or met-
al brush.
•
Blow with a strong air blast to avoid re-
moved dirt getting into the engine. Re-
place the spark plug if there are cracks
on its insulating material, corroded
electrodes or large deposits.
•
Check electrode gap with a thickness
gauge and adjust if necessary by care-
fully bending the earth electrode.
•
Make sure the washer is in good con-
ditions. Once the washer is fitted, fin-
ger tight the spark plug to avoid
damaging the thread.
•
Tighten to the specified torque.
•
Insert the spark plug tube correctly so
that it does not get detached due to en-
gine vibrations.
•
Refit the inspection cover.
CAUTION
TIGHTEN THE SPARK PLUG CORRECTLY,
OTHERWISE THE ENGINE MAY OVERHEAT
AND GET IRRETRIEVABLE DAMAGED. USE
SPARK PLUGS OF THE RECOMMENDED
TYPE ONLY. OTHERWISE, ENGINE LIFE AND
PERFORMANCE COULD BE COMPROMISED.
SCARABEO 500
Maintenance
MAIN - 45