High Fuel Consumption - PIAGGIO Runner 125 Service Station Manual

Runner 125 - 200
Possible Cause
Minimum nozzle dirty
Excessive exhaust noise
Possible Cause
Secondary air device cut-off valve not working
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
Fuel pump failure
Starter inefficient
Air filter blocked or dirty.
SAS malfunctions
Possible Cause
Secondary air device cut-off valve not working
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
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
Remove the sponge, wash with water and car shampoo, then
soak it in a mixture of 50% petrol and 50% specific oil. Press
with your hand without squeezing, allow it to drip dry and refit.
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
Operation
Replace the secondary air device
Replace the pipe
Replace the device and the coupling
Operation
the tank level with the carburettor inverted.
fixed in their fittings
Check that there is no fuel in the low-pressure duct
power supply
Operation
Replace the secondary air device
Replace the pipe
Replace the device and the coupling
Operation
alous way
Troubleshooting
TROUBL - 57