5. FUEL SYSTEM/FUEL PUMP
/FUEL TANK/CARBURETOR
5-4
XCITING 500
TROUBLESHOOTING
Engine does not start Engine idles roughly, stalls or runs poorly
• No fuel in tank • Incorrect idle speed
• Restricted fuel line • Rich mixture
• Too much fuel getting to cylinder • Lean mixture
• Clogged air cleaner • Clogged air cleaner
• Contaminated fuel • Intake air leak
• Faulty fuel pump • Contaminated fuel
• Faulty air-cut off valve
• Damaged vacuum tube and connectors
• Damaged carburetor insulator
Throttle does not open fully, so engine stalls Rich mixture
• Damaged vacuum piston diaphragm • Automatic valve opens excessively
• Clogged diaphragm hole • Faulty float valve
• Float level too high
Lean mixture • Clogged air jets
• Clogged fuel jets • Automatic choke valve set plate installed in
• Clogged fuel tank cap breather hole
the wrong groove
• Clogged fuel filter •Clogged air cleaner
• Bent, kinked or restricted fuel line
• Faulty float valve
• Float level too low
• Faulty fuel pump or insufficient output
Engine is hard to start
• No fuel in tank
• Restricted fuel line
• Clogged fuel strainer
• Faulty fuel pump
• Broken or clogged vacuum tube
• Faulty or clogged charcoal canister
Lean mixture
• Clogged charcoal canister
• Bent, kinked or restricted fuel line
• Clogged fuel strainer
• Float level too low
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