KYMCO MXU 500 - Troubleshooting

5. FUEL SYSTEM
5-3
MXU 500
TROUBLESHOOTING
Engine cranks but won’t start Engine lacks power
xNo fuel in tank x Clogged air cleaner
xNo fuel to carburetor x Faulty carburetor
xCylinder flooded with fuel x Faulty ignition system
xNo spark at plug
xClogged air cleaner Lean mixture
xIntake air leak x Clogged carburetor fuel jets
xImproper throttle operation x Float level too low
x Intake air leak
Engine idles roughly, stalls or runs poorly x Clogged fuel tank cap breather hole
xExcessively used choke x Kinked or restricted fuel line
xIgnition malfunction
xFaulty carburetor Rich mixture
xPoor quality fuel x Float level too high
xLean or rich mixture x Clogged air jets
xIncorrect idle speed x Clogged air cleaner
Misfiring during acceleration
xFaulty ignition system
xFaulty carburetor
Backfiring at deceleration
xFloat level too low
xIncorrectly adjusted carburetor
xFaulty exhaust muffler