- Insert the driving belt into the pulley unit accord-
ing to their direction of rotation.
- Insert the pulley unit with the belt into the tool.
- Slightly preload the spring.
- Make sure that the clutch is perfectly inserted into
the adapter ring before proceeding to tighten the
clutch nut.
- Place the tool in the clamp with the control screw
on the horizontal axis.
- Fully preload the spring.
- Apply the clutch fixing nut and tighten it to the
prescribed torque using the special 46x55 wrench.
- Loosen the tool clamp and insert the belt accord-
ing to its direction of rotation.
- Lock the driven pulley again using the specific
tool.
- Preload the clutch return spring with a traction/
rotation combined action and place the belt in the
smaller diameter rolling position.
- Remove the driven pulley /belt unit from the tool.
N.B.
DURING THE SPRING PRELOADING PHASE, BE CARE-
FUL NOT TO DAMAGE THE PLASTIC SPRING STOP AND
THE BUSHING THREADING.
N.B.
FOR DESIGN REASONS, THE NUT IS SLIGHTLY ASYM-
METRIC; THE FLATTEST SURFACE SHOULD BE MOUN-
TED IN CONTACT WITH THE CLUTCH.
Specific tooling
020444Y Tool for fitting/ removing the driven
pulley clutch
020444Y011 adapter ring
020444Y009 wrench 46 x 55
Locking torques (N*m)
Nut locking clutch unit on pulley 55 ÷ 60 Nm
Version 125
Engine Liberty 125 - 200 4tempi
ENG - 74
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