Yamaha EF1000iS Owner's Manual - page 33
– 28 –
707-091
AE01097
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 tank cap air vent knob to
“OPEN” (turn it 1 turn counterclockwise).
• Fuel cock knob to “ON”.
2 Clogged fuel line .... Clean fuel line.
2 Clogged carburetor .... Clean carburetor.
705-072
ON
OFF
700-006
763-223b
760-009
AE00785
Generator won’t produce power
2 Safety device (AC) to “OFF” .... Stop the engine,
then restart.
2 Safety device (DC protector) to “OFF” .... Press to
reset the DC protector.
2. Engine oil system
Insufficient
2 Oil level is low .... Add engine oil.
3. Electrical systems
2 Engine switch (Red) to “ON”.
Poor spark
2 Spark plug dirty with carbon or wet .... Remove
carbon or wipe spark plug dry.
2 Faulty ignition system .... Consult dealer.
4. Compression
Insufficient
2 Worn out piston and cylinder .... Consult dealer.
7CG-28199-10 4/1/04 3:13 PM Page 28