Excessive Exhaust Noise; High Fuel Consumption; Sas Malfunctions; Clutch Grabbing Or Performing Inadequately - PIAGGIO MSS Fly 50 4T Workshop Manual

MSS Fly 50 4T
Possible Cause
Incorrect idle adjustment
Pressure too low at the end of compression
Faulty spark plug or incorrect ignition advance
The starter remains on
Minimum nozzle dirty

Excessive exhaust noise

Possible Cause
Depression intake pipe of the secondary air device disconnec-
ted or dented
Reed valve of the secondary air device does not close correctly
and wears out the rubber coupling between the device and the
head pipe

High fuel consumption

Possible Cause
Float level
Loose nozzles
Starter inefficient
Air filter blocked or dirty.

SAS malfunctions

Possible Cause
Depression intake pipe of the secondary air device disconnec-
ted or dented
Reed valve of the secondary air device does not close correctly
and wears out the rubber coupling between the device and the
head pipe
Transmission and brakes

Clutch grabbing or performing inadequately

IRREGULAR CLUTCH PERFORMANCE OR SLIPPAGE
Possible Cause
Faulty clutch
Check the thermal group seals and replace worn components
Replace the spark plug or check the ignition circuit components
Check: electric wiring, circuit not interrupted, mechanical
Wash the nozzle with solvent and dry with compressed air
EXCESSIVE EXHAUST NOISE
HIGH FUEL CONSUMPTION
Restore the level in the tank by bending on the float the thrust-
ing reed of the petrol inlet rod so as to have the float parallel to
Check the maximum and minimum nozzles are adequately
Check: electric wiring, circuit continuity, mechanical sliding and
Dismantle the sponge, wash with water and shampoo, then
soak it in a mixture of 50% petrol and 50% of specific oil (Se-
lenia Air Filter Oil), then hand dry without squeezing, allow to
A
NOMALIES IN THE SECONDARY AIR DEVICE
Check that there is no grease on the masses. Check that the
clutch mass contact surface with the casing is mainly in the
centre with equivalent characteristics on the three masses.
Check that the clutch casing is not scored or worn in an anom-
Operation
Adjust using the rpm indicator
movement and power supply; replace if necessary
Operation
Replace the pipe
Replace the device and the coupling
Operation
the tank level with the carburettor inverted.
fixed in their fittings
power supply
drip dry and then reassemble.
Operation
Replace the pipe
Replace the device and the coupling
Operation
alous way
Troubleshooting
TROUBL - 43