VESPA ET4 50, Workshop Manual

Page: 107 / 185

Removing the oil sump
- Remove the oil filling cap, the transmission cover,
the complete driving pulley assembly with belt and
pinion.
- Unscrew the oil drainage cap « A » shown in the
figure and drain out all the oil from the sump.
- Remove the 6 screws indicated in the figure.
Refitting the oil sump
- Clean and grease the faying surfaces.
- Apply LOCTITE 510 on the sump surface and
tighten the 6 fixing screws to the specified torque.
- Refit the driving pulley assembly, the belt, the
pinion and the transmission cover.
WHEN TESTING THE LUBRICATION SYSTEM, REFER TO
THE "CRANKCASE AND CRANKSHAFT" CHAPTER, RE-
GARDING LUBRICATION OF THE CRANKSHAFT AND
CONNECTING ROD
Locking torques (N*m)
Oil sump screws
8 ÷ 10 Nm
Fuel supply
- Disconnect the fuel supply and the suction taking
pipe from the carburettor.
- Check that there are no fuel leaks between the
two tubes.
- Close the fuel outlet pipe.
- By means of the MITIVAC pump apply 0.1 bar of
suction to the tap.
- Make sure that the suction is kept stable and that
and that there are no fuel leaks.
- Reconnect the suction pipe to the manifold.
- Position the fuel pipe with the outlet at the point
of the tap.
- Turn the engine by using the starter for five sec-
onds with the carburettor at minimum.
ET4 50
Engine
ENG - 107