Yamaha Ef600 Generator/inverter Repair/service Manual - Answered Questions & Fixed issues


Diesel generator set fault solutions: www.dieselgeneratortech.com

Yamaha Ef600... | Answered on Sep 24, 2019 | 75 views


Try taking out your spark plug and see if it needs cleaned or replaced

Yamaha Ef600... | Answered on Mar 05, 2016 | 135 views


YAMAHA GENERATOR DEALER !!!!

Yamaha Ef600... | Answered on Apr 15, 2017 | 394 views


More supports, please see at www.dieselgeneratortech.com

Yamaha... | Answered on Oct 22, 2019 | 94 views


Here is some reasons for reference:
1.After the diesel generator is stopped, the residual magnetism is often lost, because the material used for the magnetic pole of the exciter is close to the soft steel, and the residual magnetism is small. After the shutdown, when there is no current in the excitation winding, the magnetic field will disappear.
2.The magnetic pole of the diesel generator loses its magnetic properties.
3.Damage of excitation circuit components or circuit breakage, short circuit or grounding phenomena.
4.The exciter brush is not in good contact with the commutator and pressure of brush holder is insufficient.
5.Excitation winding wiring error, opposite polarity.
6.Stator winding and rotor winding of generator set open circuit.
7.Poor contact between diesel generator brush and slip ring, or insufficient brush pressure.
8.Diesel generator lead wire wiring is loose or switch contact is poor.
9.The fuse box is fused.
10.The "auto-manual-de-excitation" switch on the control panel is in the de-excitation position (automatic generator set has "auto-manual-de-excitation" switch).
11.The voltmeter is damaged.
12.Rotary rectifier module is damaged.

Yamaha... | Answered on Oct 22, 2019 | 45 views


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 | 27 views


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

Yamaha... | Answered on Oct 09, 2019 | 78 views


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 | 111 views


Yes, try to bypass oil sensor to evaluate problem. Defective oil sensors cause a lot of problems.

Yamaha... | Answered on Apr 18, 2019 | 89 views


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

Yamaha... | Answered on Mar 24, 2019 | 239 views


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

Yamaha... | Answered on Aug 27, 2018 | 121 views


Remove the cover, and take off the broken cord, replace it with new.

Yamaha... | Answered on May 20, 2018 | 183 views


Check oil level and cooling air flow past the cylinder. Are there foreign material like leaves in the air intake?

Yamaha... | Answered on Mar 17, 2018 | 59 views


It should be stated on the id plate.

Yamaha... | Answered on Feb 21, 2018 | 55 views


Probably find that the carburetor jets are a bit clogged. Remove and soak in carburetor cleaner and then blow out with compressed air. Or alternately get a very fine drill set and clean, but be careful if choosing this method. Also clean the air filter. cheers

Yamaha... | Answered on Feb 19, 2018 | 1,288 views


You may find the following documents helpful for troubleshooting and parts. I use www.arcolawn.com for parts but any reseller can assist you. This model does have an adjustment on the AVR behind the main panel but please review the below manuals before adjusting. Material Number Manual (PDF) 0H4099 EV C/PNL 410 XG PORTABLE 6.5KW 0H5145 WD SD 8.0KW XG ES 0J1587A EV XG8000ES 49ST 0J2873 EV XG8E 410CC 0J4651 MANUAL LOWES XG8000E 0J3335A WARRANTY STATEMENT EMSN E1 P3

Yamaha... | Answered on Feb 13, 2018 | 2,007 views


voltage regulator not producing volts for the exciter windings of the alternator

Yamaha... | Answered on Jan 16, 2018 | 331 views


Check the brush holder for worn brushes. If they seem ok then the voltage regulator has failed.

Yamaha... | Answered on Oct 31, 2017 | 465 views


https://www.manualslib.com/manual/770551/Yamaha-Mz175.html

Yamaha... | Answered on Oct 19, 2017 | 390 views


10W-30 will be OK.
Try not to overfill it.
I use synthetic in all my small engines.

Yamaha... | Answered on Sep 15, 2017 | 61 views

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