VESPA 664787 Service Station Manual page 77

Vespa S 50 2T
- Refit the particular components of the assembly
(roller container assembly with bushing, limiting
washer, stationery half-pulley, cooling fan belt with
drive, washer and nut).
- With the specific tool tighten the lock-nut to the
prescribed torque and then perform a final 90° lock
in order to prevent the rotation of the drive pulley.
N.B.
REPLACE THE NUT WITH A NEW ONE AT EVERY REFIT
CAUTION
UPON FITTING THE DRIVING PULLEY UNIT IT IS OF UT-
MOST IMPORTANCE THAT THE BELT IS FREE INSIDE IN
ORDER TO AVOID WRONG TIGHTENING AND CONSE-
QUENTLY DAMAGING THE CRANKSHAFT KNURLING.
Specific tooling
020451Y Starting ring gear lock
Locking torques (N*m)
Crankshaft pulley nut
For 25 km/h engine type versions, the limit washer is 5.5 mm thick
End gear
Removing the hub cover
• Remove the transmission cover
• Remove the clutch assembly
• Discharge the rear hub oil.
• Remove the 5 screws indicated in the figure.
• Remove the hub cover with driven pulley shaft.
See also
Refitting the clutch
18 to 20 + 90° Nm
Engine
ENG - 77