20 Most Recent Yamaha Ef600 Generator/inverter Repair/service Manual Questions & Answers


Diesel generator set fault solutions: www.dieselgeneratortech.com

Yamaha Ef600... | Answered on Sep 24, 2019


Start by replacing fuel. Completely drain the tank and carburetor fuel bowl. Do not use what fuel you may have, get 2 gallons of fresh fuel from gas station. If problem clears then likely water in fuel.

If still backfires with fresh fuel then likely an ignition issue. Failing ignition module or possibly a sheared flywheel key. Try reducing spark plug gap to .025" .

Yamaha... | Answered on Oct 13, 2019


Mybe the problem is the frequency.
Visit the website www.dieselgeneratortech.com to get more support.

Yamaha... | Answered on Oct 09, 2019


There are several types of overload to consider:
A. Catastrophic: something has gone very wrong. There may be a phase to phase short or two shorts to ground. This assumes you have an ungrounded system. With luck the main circuit breaker will open without destroying itself;
B. Steady state over current: The load on the generator is greater than the rating on the circuit breaker. Time to parallel in another generatoror shed load;
C. Transient over current: Suppose you were running two generators in parallel and one failed. The remaining machine may experience an over current condition that causes the breaker to trip. You can also have transient breaker trips upon activation of a large motor e.g., fire pump or bow thruster;
D.Thermal: There is a big difference in sea water temperature as you travel the world. It is possible to have an overload caused by the diesel engine's inability to shed heat in the tropics. Continued operation could damage the diesel engine. Again, parallel in another generator or shed load.

Yamaha... | Answered on Sep 30, 2019


Is it overloaded? That's the most common reason!

Yamaha... | Answered on Mar 24, 2019


4 stroke engine?? syn 5w30 or straight 30w

Yamaha... | Answered on Aug 27, 2018

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