Yamaha YP20G, Owner'S Manual

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Troubleshooting
Engine won’t start
1. Fuel systems
No fuel supplied to combustion chamber.
2
No fuel in tank .... Supply fuel.
2
Fuel in tank .... Fuel cock lever to ON.
1
ON
2
Clogged fuel line .... Clean fuel line.
2
Foreign matter in fuel cock .... Clean fuel cock.
2
Clogged carburetor .... Clean carburetor.
2. Engine oil system
Insufficient
2
Oil level is low .... Add engine oil.
3. Electrical systems
2
Engine switch to “ON” (ON) and pull the recoil
starter.
2
“ON” (ON)
Poor spark
2
Spark plug dirty with carbon or wet .... Remove
carbon or wipe spark plug dry.
2
Faulty ignition system .... Consult a Yamaha deal-
er.
707-041
705-037
1
700-006
1 2
760-009
704-010
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