VESPA GTV 250 i.e. 2008 Service Station Manual page 118

Engine
Removing the rocker-arms cover
- Remove the 5 screws indicated in the figure
Removing the timing system drive
- First remove the parts listed below: transmission
cover, drive pulley with belt, oil sump with spring
and by-pass piston, oil pump pulley cover, O-ring
on the crankshaft and the sprocket wheel separa-
tion washer.
- Remove the tappet cover.
- Remove the central screw fastener and the au-
tomatic valve lifter retaining cover, as shown in the
figure.
- Remove the return spring of the automatic valve
lifter unit and the automatic valve lifter unit and its
end of stroke washer.
ENG - 118
Vespa GTV 250 i.e.