APRILIA SHIVER 900 Service Station Manual page 238

Engine
Removing the overhead camshaft
•
Remove the clutch side crankcase.
•
Turn the crankshaft of the head for
which the camshafts need to be re-
moved to TDC.
In order to remove the head camshafts, it is nec-
essary to remove the head covers.
Mark the camshafts, le relative cogwheels, and the
cam towers in order to avoid mixing them up during
the reassembly phase.
•
Unscrew and remove the cam tower's
eight screws, proceeding in a diagonal
fashion and by stages.
•
Carefully remove the cam tower in or-
der to avoid damaging the calibrated
grub screws' lodgings.
•
Remove the camshafts complete with
the gears.
Removing the valves
•
When removing the valve, mark the components according to the position and the cylinder
they belong to, in order to refit the components to their correct positions.
ENG - 238
SHIVER 900