Gilera Nexus 500 Workshop Manual page 136

Engine
Remove the inside hexagon screw and the coun-
terweight as shown in the figure.
- Remove the timing belt rim from the camshaft.
- Remove the timing belt rim.
- Remove the tone wheel.
- Remove the engine revolution timing sensor and
relevant O-ring by loosening the fastening screw
and removing the mounting band from the special
hole obtained on the head gasket.
N.B.
TO CHECK THIS COMPONENT, SEE THE IN-
JECTION CHAPTER.
ENG - 54
Nexus 500