- Loosen the 4 head-cylinder fixing nuts in two or
three stages and in a criss-crossed sequence.
- Remove the head, the two centring dowels, the
gasket and the lower chain guide slider
Removing the valves
- Using the appropriate tool fitted with an adaptor, remove the cotters, caps, springs and valves.
Specific tooling
020382Y Valve cotters equipped with part 012 removal tool
020382Y012 bush (valve removing tool)
CAUTION
ARRANGE THE VALVES SO AS TO RECOG-
NISE THE ORIGINAL POSITION ON THE HEAD
(FLYWHEEL SIDE AND TRANSMISSION SIDE).
GP 800 i.e. Engine
ENG - 51