Intermediate Gear; Refitting The Free Wheel - PIAGGIO MP3 400 i.e. Service Manual

Engine

Intermediate gear

- Check that the toothing is not worn.
- Check the diameter of the two bearings.
Characteristic
Gear bearing diameter:
12 - 0 0.011 mm
Also check the shaft diameter on the flywheel cov-
er and on the engine crankcase.
Characteristic
Bearing diameter on the flywheel cover
12 + 0.034 -0.016 mm
Bearing diameter on the engine crankcase:
12 + 0.034 -0.016 mm
N.B.
THE TORQUE LIMITER IS PROVIDED WITH 4 GEARS THAT HAVE THE FUNCTION OF CLUTCH
DRIVE PLATES.
Driven plates consist of 4 Belleville springs provi-
ded with grooved profiles; this assembly allows
transmitting torque lower than 10 kgm.
In case of incorrect start-up manoeuvres, the lim-
iter prevents any kicks, with consequent reversal
of direction of the crankshaft which would impair
the engine structure.
The limiter assembly cannot be overhauled. In case of irregularities on the toothed discs, replace the
assembly.

Refitting the free wheel

- Make sure the free wheel contact surfaces are in good condition.
- Thoroughly clean the free wheel to remove LOCTITE residue.
- Degrease the threading of the holes in the free wheel and the clamping screws.
- Apply the recommended product to the end of the screws.
Recommended products
Loctite 243 Medium strength threadlock
ENG - 44
MP3 400 i.e.