Excessive Fuel Consumption; Brakes Overheating - VESPA LX 150 4T Euro 3 Service Station Manual

Vespa LX 125 - 150 4T Euro 3
High fuel consumption
Possible Cause
Air filter blocked or dirty
Inefficient Starter
Loose nozzles
Incorrect float level
Transmission and brakes
Clutch grabbing or performing inadequately
IRREGULAR CLUTCH PERFORMANCE OR SLIPPAGE
Possible Cause
Slippage or irregular functioning
Insufficient braking
Possible Cause
Worn brake pads or shoes
Front brake disk loose or deformed
Air bubbles inside the hydraulic braking system
Fluid leakage in hydraulic braking system
Excessive clearance in the rear brake control cable

Brakes overheating

Possible Cause
Rubber gaskets swollen or stuck
Compensation holes on the pump clogged
Brake disc slack or distorted
Defective piston sliding

EXCESSIVE FUEL CONSUMPTION

Check: electric wiring, circuit continuity, mechanical sliding and
Check the maximum and minimum nozzles are adequately
Restore the level in the chamber by bending on the float the
thrusting reed of the petrol intake rod so as to have the float
parallel to the chamber level with the carburettor inverted.
Check that the faying surface between the clutch masses and
the clutch housing is mainly in the middle and with equivalent
Check that the clutch housing is not scored or worn abnormally
INEFFICIENT OR NOISY BRAKING
Replace the brake pads or shoes and check for brake disk or
Check the brake disc screws are locked; use a dial gauge and
a wheel mounted on the vehicle to measure the axial shift of
Carefully bleed the hydraulic braking system, (there must be
Failing elastic fittings, plunger or brake pump seals, replace
Adjust the clearance with the appropriate adjuster located on
BRAKES OVERHEATING
Check the brake disc screws are locked; use a dial gauge and
a wheel mounted on the vehicle to measure the axial shift of
Operation
Clean according to the procedure
power supply
fixed in their fittings
Operation
Check that there is no grease on the masses.
specifications on the three masses.
Never run the engine without the clutch housing
Operation
drum wear conditions.
the disc.
no flexible movement of the brake lever).
the back part of the crankcase.
Operation
Replace gaskets.
Clean carefully and blast with compressed air
the disc.
Check calliper and replace any damaged part.
Troubleshooting
TROUBL - 37