GAS GAS 125 TXT GP 2019, Owner'S Manual

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Owner's Manual
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Troubleshooting
FAULT CAUSE SOLUTION
1 Engine does not run - Seized crankshaft.
- Seized cylinder / piston / crank pin
bearing.
- Seized transmission assembly.
- Motorcycle inactive for long time
- Dirty or wet spark plug.
- Flooded engine.
- Incorrect air / petrol mixture.
- Open exhaust valve
- Go to a specialized workshop.
- Go to a specialized workshop.
- Go to a specialized workshop.
- Drain old fuel from tank. When fuel tank full of new fuel, it
will start immediately.
- Dry spark plug or change it.
- To vent engine, accelerate to maximum and operate kick-
start pedal 5 to 10 times. Then start engine as described
above. If engine does not start, unscrew spark plug and
dry.
- Clean fuel tank ventilation. Adjust air filter duct.
- Check exhaust valve and correct.
2 Engine starts but then stops - Incorrect air supply.
- Lack of fuel.
- Close choke. Clean fuel tank ventilation. Adjust air filter
duct.
- Fill fuel tank.
3 Engine overheats - Insufficient coolant in circuit.
- Radiator dirty or partially clogged. - Add coolant and check watertightness of cooling system.
- Clean radiator fins or replace it.
4 Engine functions unevenly - Dirty, broken or incorrectly tightened
spark plug.
- Problem with spark plug cap or cable
has insufficient contact with cap.
- Damaged ignition rotor.
- Water in fuel.
- Check condition of spark plug and clean, tighten or
replace.
- Check condition of spark plug cap. If deteriorated, change
it.
- Change rotor.
- Drain fuel from tank and add new.
5 Engine lacks power or
accelerates badly
- Fuel supply faulty.
- Dirty air filter.
- Damaged or leaking exhaust.
- Dirty carburettor jets.
- Worn or damaged crankshaft
bearings.
- Clutch slips.
- Clean and check fuel system.
- Clean or replace air filter. Check.
- Check exhaust system for damage, renew fibreglass thread
in muffler if necessary.
- Remove carburettor and clean jets.
- Change crankshaft bearings.
- Check clutch. - Go to a specialized workshop.
TROUBLESHOOTING
NOTE
This is not an exhaustive list of faults, just some of the most common.