- Loosen the tool clamp and insert the belt accord-
ing to its direction of rotation.
- Lock the driven pulley again using the appropri-
ate tool.
- Preload the clutch contrast spring with a traction/
rotation combined action until it reaches the pul-
leys maximum opening and place the belt on the
minimum rolling diameter.
- Remove the driven pulley /belt assembly from the
tool.
N.B.
FOR DESIGN REASONS, THE NUT IS SLIGHTLY ASYM-
METRIC; THE FLATTEST SURFACE SHOULD BE MOUN-
TED IN CONTACT WITH THE CLUTCH.
N.B.
DURING THE SPRING PRELOADING PHASE, BE CARE-
FUL NOT TO DAMAGE THE PLASTIC SPRING STOP AND
THE BUSHING THREADING.
N.B.
AN EXCESSIVE QUANTITY CAN DAMAGE THE CLUTCH
OPERATION.
Specific tooling
020444Y011 adapter ring
020444Y009 46x55 Wrench
Locking torques (N*m)
Clutch unit nut on driven pulley 55 ÷ 60
Refitting the driven pulley
- Place the driven pulley with clutch bell on the
work table.
- With your hands compress the mobile pulley
while introducing the driving belt fully between the
pulleys.
This operation is necessary so that the belt
does not interfere with the correct assembly of
the moving driving pulley and loosen the nut
on the crankshaft.
- Refit the whole driven pulley on its shaft.
Runner 125 - 200 Engine
ENG - 135
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