Before removing the front forks, it is first necessary to remove the
following parts: 
Loosen the clamp screws (1) holding the fork legs to the steering head (3).
Loosen the clamp screws (2) and (26) securing the fork legs to the bottom yoke (4).
Withdraw the fork legs (5) and (6) downwards in order to carry out to all the necessary overhaul operations.

Steering head: front fork
Overhauling the front forksCylinder/piston assemblies
Piston
Gudgeon pin circlip
Gudgeon pin
Set of piston rings
Cylinder-crankcase gasket
Water pump outlet union
Hose clip
Horizontal cylinder coolant inlet hose
Vertical cylinder coolant inlet hose
Cylinder barrel
Cylinder head gasket
Bush
Spare parts catalogue
Diavel a ...
Vehicle pre-delivery
Transport packaging integrity check (if required);
Removal from the transport packaging (if required);
Motorcycle integrity check;
Check of the supplied kit completeness (refer to the parts list supplied
together with the bike packaging);
Only if the bike is supplied in a crate: handle ...
Storing the bike away
If the motorcycle is to be left unridden over long periods, it is
advisable to carry out the following operations before storing
it away:
clean the motorcycle;
empty the fuel tank;
pour a few drops of engine oil into the cylinders through the
spark plug bores, then turn the engine over by hand ...