VESPA ET4 50, Руководство по ремонту

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Possible Cause Operation
lenia Air Filter Oil), then hand dry without squeezing, allow to
drip dry and then reassemble.
The starter remains on Check that the starter runs correctly and it is properly powered
Loose nozzles Check the maximum and minimum nozzles are adequately
fixed in their fittings
Incorrect float level Check and restore the correct fuel level in the tank
Transmission and brakes
Clutch grabbing or performing inadequately
IRREGULAR CLUTCH PERFORMANCE OR SLIPPAGE
Possible Cause Operation
Faulty clutch 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-
alous way
Insufficient braking
INEFFICIENT BRAKING
Possible Cause Operation
Worn brake pads or shoes Replace the brake pads or shoes and check for brake disk or
drum wear conditions.
Air bubbles inside the hydraulic braking system Carefully bleed the hydraulic braking system, (there must be
no flexible movement of the brake lever).
Brake disc or drum deformed Use a dial gauge to check the levelness of the disk with the
wheel correctly fitted and the concentricity of the rear drum;
check the brake disc screws are locked
Fluid leakage in hydraulic braking system Elastic fittings, piston seals or brake pump breakdown, replace
Excessive backlash in rear brake control cable Adjust backlash with the appropriate adjuster on the shoe con-
trol lever
The brake fluid has lost its properties Replace the front brake fluid and top up to the correct level in
the pump
Return spring broken Replace spring.
Shoe control bolt not lubricated Lubricate with Z2 grease.
Brakes overheating
BRAKES OVERHEATING
Possible Cause Operation
Defective sliding of pistons Check calliper and replace any damaged part.
Brake disc or drum deformed Use a dial gauge to check the levelness of the disk with the
wheel correctly fitted and the concentricity of the rear drum;
check the brake disc screws are locked
Electrical system
ET4 50
Troubleshooting
TROUBL - 37