Possible Cause Operation
Failing automatic starter on the carburettor Check the electrical wiring and mechanical movement, replace
if necessary.
Start-up enabling buttons failure Check continuity using an Ohm meter, with the switch pressed;
replace if necessary
Carburettor nozzles clogged or dirty Dismantle, wash with solvent and dry with compressed air
Air filter obstructed 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.
Excessive oil consumption/Exhaust smoke
EXCESSIVE OIL CONSUMPTION/SMOKEY EXHAUST
Possible Cause Operation
Worn valve guides Check and replace the head unit if required
Worn valve oil guard Replace the valve oil guard
Oil leaks from the couplings or from the gaskets Check and replace the gaskets or restore the coupling seal
Worn or broken piston rings or piston rings that have not been
fitted properly
Replace the piston cylinder unit or just the piston rings
Insufficient lubrication pressure
POOR LUBRICATION PRESSURE
Possible Cause
Operation
By-Pass remains open Check the By-Pass and replace if required. Carefully clean the
By-Pass area.
Oil pump with excessive clearance Perform the dimensional checks on the oil pump components
Oil filter too dirty Replace the cartridge filter
Oil level too low Restore the level using the recommended oil type (Selenia HI
Scooter 4 Tech)
Engine tends to cut-off at full throttle
THE MOTOR TENDS TO STOP AT MAXIMUM THROTTLE
Possible Cause
Operation
Maximum jet clogged Remove the carburettor, wash with solvent and dry with com-
pressed air
Water or condensate in the carburettor tank Remove the tank, wash with solvent and dry with compressed
air
Level in tank too low Restore the level in the tank by bending on the float the thrust-
ing reed of the petrol inlet rod so as to have the float parallel to
the tank level with the carburettor inverted.
Engine tends to cut-off at idle
THE ENGINE TENDS TO STOP AT IDLE SPEED
Possible Cause
Operation
Incorrect idle adjustment Adjust using the rpm indicator
Incorrect timing Time the system and check the timing system components
The starter remains on Check: electric wiring, circuit not interrupted, mechanical
movement and power supply; replace if necessary
Faulty spark plug or incorrect ignition advance Replace the spark plug or check the ignition circuit components
Pressure too low at the end of compression Check the thermal group seals and replace worn components
Minimum nozzle dirty Wash the nozzle with solvent and dry with compressed air
Troubleshooting Liberty 125 - 200 4tempi
TROUBL - 36
To Next Page
Loading...
Need help?
General
