VESPA GT 200, Workshop Manual

Page: 83 / 287

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8.1.11 Excessive Fuel Consumption
Symptom Possible Cause Operation
Air filter clogged or dirty Remove the sponge, wash it in water
and shampoo, and then soak it in a
50% mixture of fuel and oil
(recommended: Selenia Air Filter
Oil). Squeeze the sponge without
twisting, allow it to drip and then
replace it.
Automatic choke device faulty Check electrical connections, circuit
continuity, mechanical sliding, and
power supply
Fuel pump faulty Check vacuum duct seal
Jets loose Check that the main and idling jets
are securely seated
Excessive fuel
consumption
Float level Restore the level in the float chamber
by bending the fuel inlet needle
thrust blade on the float so that the
float is parallel to the chamber
surface when the carburetor is in an
up-side down position
8.2 Transmission and Brakes
8.2.1 Irregular Clutch Operation or Grapping
Symptom Possible Cause Operation
Clutch irregular
operation or
grapping
Faulty clutch Check that the clutch weights are
free from grease
Check that the contact surface of the
clutch weights with the drum housing
is mainly at the centre and equivalent
for the three weights
Check that the drum housing exhibits
no abnormal wear or scratches