KYMCO Dink 50, Service Manual

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13
. FUEL SYSTEM/CARBURETOR/
FUEL PUMP/ FUEL TANK
13-6
DINK 50/125
TROUBLESHOOTING
Engine does not start Engine idles roughly, stalls or runs poorly
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No fuel in tank
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Incorrect idle speed
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Restricted fuel line
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Rich mixture
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Too much fuel getting to cylinder
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Lean mixture
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Clogged air cleaner
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Clogged air cleaner
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Contaminated fuel
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Intake air leak
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Faulty fuel pump
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Contaminated fuel
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Faulty air-cut off valve
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Damaged vacuum tube and connectors
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Damaged carburetor insulator
Throttle does not open fully, so engine stalls Rich mixture
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Damaged vacuum piston diaphragm
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Auto bystarter valve opens excessively
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Clogged diaphragm hole
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Faulty float valve
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Float level too high
Lean mixture
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Clogged air jets
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Clogged fuel jets
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Auto bystarter valve set plate installed in
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Clogged fuel tank cap breather hole
the wrong groove
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Clogged fuel filter
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Clogged air cleaner
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Bent, kinked or restricted fuel line
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Faulty float valve
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Float level too low
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Faulty fuel pump or insufficient output
Engine is hard to start
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No fuel in tank
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Restricted fuel line
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Clogged fuel strainer
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Faulty fuel pump
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Broken or clogged vacuum tube
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Faulty or clogged charcoal canister
Lean mixture
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Clogged charcoal canister
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Bent, kinked or restricted fuel line
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Clogged fuel strainer
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Float level too low