JTG JT250 2012, User Manual

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41
ENG
LIS
H
Engine makes strange noises - Ignition problems.
- Overheated engine. - Take motorcycle to an authorised
workshop.
- Stop the engine and check the state of
the cooling and exhaust systems.
Engine lacks power - Admission problems.
- Exhaust system problems.
- Carburettor jets dirty.
- Damaged crankshaft bearings.
- Clutch slipping. - Clean the fuel admission system and
air filter.
- Check for leaks in the system and
clean or replace the silencer fibre.
- Remove the carburettor and clean
them.
- Replace the bearings.
- Check its adjustments. Take bike to a
specialised workshop.
Exhaust gives off white smoke - Water in the cylinder.
- Accelerator cable incorrectly adjusted. - Change the cylinder head O-ring.
- Check accelerator adjustment.
Exhaust gives off brown smoke - Lack of air in the mixture.
- Main jet too high. - Clean or change the air filter.
- Check the main jet.
Explosions in the exhaust - Carbon deposits in the combustion
chamber.
- Incorrect type of fuel.
- Spark plug in bad condition or wrong
type.
- Exhaust system gaskets damaged. - Clean the combustion chamber.
- Empty fuel tank and refill with correct
type of fuel.
- Replace spark plug with correct type.
- Check state of gaskets and replace if
necessary .
Clutch not working correctly - No play in the clutch lever. - Take bike to a specialised workshop.