Gilera Nexus 500 Workshop Manual page 99

Nexus 500
Engine
- Remove the flat washer and the spring washer
as shown in the figure.
- Insert the nut in the original position (nut side in
contact with the belleville washer).
- Turn the central pulley nut to horizontally align
the holes and install the special tool.
N.B.
CHECK THAT THE STOP WRENCH TOOL IS
EASILY INSERTED INTO THE PULLEY AND IN
THE ENGINE CRANKCASE.
Specific tooling
020474Y Driving pulley lock wrench
- Install the lock ring from the rear so that the
splines are completely engaged.
- Finally install the tool by siding the nuts by hand
and ensuring the tool is resting flatly.
- Tighten the driving pulley fastening nut to the
prescribed torque
- Remove the special tool.
Locking torques (N*m)
Drive pulley nut 160 - 175
ENG - 17