CF MOTO CF125T-19 2003, Service Manual

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5-2
CFMOTO
Failure diagnosis
Engine can
’ t be started
l Too much fuel in the engine
— air filter blockage
— carburetor overflow
Air leakage between carburetor and joint plate
l Deteriorated fuel
l No fuel in carburetor
— fuel cleaner blockage
— fuel pipe blockage
— fuel tap is closed
— fuel level is not well adjusted
— hole of fuel tank cap is blocked
Poor mixture
l Fuel jet blocked
l Float valve is not functioning
l Fuel level too low
l Fuel system blocked
l Carburetor air duct blocked
l Air leakage between carburetor and joint plate
l Air valve is not working normally
Over concentrated mixture
l
Float valve is functioning
l
Air nozzle is not functioning
l
Filter element is not functioning
l
Carburetor overflow
l
Difficult to start or engine stops after starting ¡¢ unsteady idle speed
l
Fuel system blocked
l
Ignition system is not functioning
l
Poor or over concentrated mixture
l
Deteriorated fuel
l
Air leakage between carburetor and joint plate
l
Idle speed not well adjusted
l
Screw for mixture ratio is not well adjusted
l
Low-speed system blocked
l
Fuel level is not well adjusted
l Hole of fuel tank cap is blocked
Delayed burning when braked
l Poor mixture in the low speed system
Backfiring, no firing when accelerating
l Ignition system is not functioning
l Poor mixture