Gilera GP 800 i.e. Service Station Manual page 200

Engine
- These operations are described once but apply
to both heads.
- Remove the spark plugs.
- Undo the two fixing nuts and collect the washers.
- Undo the spark plug side screw.
- Undo the two screws inside the timing system
side head.
N.B.
THE HEAD MAY BE REMOVED WITH THE
CAMSHAFT, ROCKING LEVER PINS AND FIT-
TING BRACKET IF NECESSARY.
ENG - 50
GP 800 i.e.