162
ST SERIES
CHANGING THE PISTON
Loosen and remove the radiator cap.
Loosen and remove the cooling circuit
draining screw.
Have a receptacle ready to collect the
fl uid.
Empty the cooling fl uid from the
engine.
Replace and close the draining screw.
Open the cover and remove the air
fi lter.
Loosen and remove the fi lter box's
fastening screws as well as those of
the rear mudguard.
Loosen the rear mudguard.
Remove the CDI
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