VESPA LX 50 Spécifications télécharger pdf (Page 49)

High fuel consumption

EXCESSIVE FUEL CONSUMPTION

Possible Cause Operation

Air filter blocked or dirty. 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

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 chamber

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 faying surface with the bell is mainly in the centre

with equivalent characteristics on the three masses. Check that

the clutch casing is not scored or worn in an anomalous 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 the 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 plunger sliding 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

Vespa LX 50 4valvole Troubleshooting

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