VESPA GTS Super 300 ie 2008 Service Station Manual page 174

Engine
Removal
- Undo the two clamping screws in the figure and
remove the cover over the pump control sprocket.
- Block the rotation of the oil pump control pulley
with a screwdriver inserted through one of its two
holes.
- Remove the central screw with Belleville washer,
as shown in the diagram.
- Remove the chain with the crown.
- Remove the control sprocket wheel with relative
O-ring.
- Remove the oil pump by undoing the two screws
in the figure.
- Remove the oil pump seal.
N.B.
IT IS ADVISABLE TO MARK THE CHAIN IN ORDER TO EN-
SURE THAT THE INITIAL DIRECTION OF ROTATION IS
MAINTAINED.
Inspection
- Remove the two screws and the oil pump cover.
- Remove the circlip retaining the innermost rotor.
- Remove and wash the rotors thoroughly with pet-
rol and compressed air.
- Reassemble the rotors in the pump body, keep-
ing the two reference marks visible Replace the
retainer ring.
ENG - 174
Vespa GTS Super 300 ie (2008)