Question about Yamaha 4500 Watt Electric Start Generator - EF5200DE

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3000 watt yamaha generator is really hard to start and when started it stalls under load.

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Sounds like the carberator needs cleaning and the linkage that makes it open up under load. it works off the flywheel. a lot of generator problems are gas related. water, trash and varnish build up in the carb.

Posted on Aug 30, 2010

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MY HONDA 3000 IS GENERATOR KEEPS STALLING OUT, BUT IT ALWAYS STARTS UP IMMEDIATELY FOR ME, COULD IT BE OVERHEATING?


No, as with most small equipment engines, the culprit is the carburetor. You'll need to soak it in carb cleaner overnight in a sea;ed container and install the rebuilt kit for it.

Jun 16, 2015 | Honda 3000 Watt Portable Generator

1 Answer

How do you stop generator from stalling under load


As you have not provided me with the information I requested I'm going to have to take a few guesses here Bob. You could be overloading the generator. You can't run a 10,000 BTU air conditioner off of a 1000 watt generator. You need to look at your load, (what you are trying to power), and determine how much power it needs. Almost everything has a tag somewhere on the device. Most don't give watt requirements. But they do tell you, how many amps the device pulls, as well as the voltage the device needs. So you need to do some math here. Volts X Amps = Watts. So if we have a 120 volt device, that pulls 15 amps, we need 1800 watts to power it. But it gets a little more tricky than that. Motors are often rated at what they pull while they are running! But it can take two or three times more power to get them started. Example... A motor rated at 10 amps, using 120 volts will be 120 X 10 = 1200 watts. But it could take 2400-3600 watts to get it running. So in theory a 3000 watt generator may die before it can start that load. Heating elements are also power hungry! Let's say you have a small 800 watt generator, and your just trying to run a simple coffee pot! Well the heating element in a typical coffee pot pulls 1000-1500 watts. A hair dryer or microwave oven rated at 1000 watts, is the power they produce, not the power they consume! So a 1000 watt microwave may pull 1600 watts of power to run. Most non US generators are highly over rated as well. I certainly would not trust a Harbor Freight 3000 watt generator to actually put out 3000 watts of power. Not that they are bad units, I would expect their numbers to be under PERFECT conditions. Temperature, humidity and altitude also play a part! Your 3000 watt generator is going to put out more power at 50 degrees, at sea level, than it is at 7000 ft in the mountains at 100 degrees. So my "guess" Bob, is that your just asking more from the generator than it can produce. Picking out a generator is not as easy as it looks. "Hey that one is $1000 and this one is $300! They both make power! What's the difference". The difference is what do you need to run! "Heck I'll just get that 50,000 watt unit"! Yeah you can do that too, but you will never use that much power, and you will burn way more fuel than you need to. My other "guess" is that you have a governor issue on the engine. As load increases the gov will throw more throttle to the motor. My generator has an option to run full speed or on the gov. So it will idle and burn less fuel while I am hammering in a nail, then go to full power when I trigger a saw connected to it. Lot's of factors involved here Bob.

May 30, 2014 | Generac Electrical Supplies

1 Answer

I have an EM3500S


Make sure that the spark arrester screen on the exhaust isn't plugged with carbon. It takes just thirty seconds to pull it out. If it is clean, then the fuel filters are the next step. Hope that helps. Rod

Mar 21, 2014 | Honda 3000 Watt Portable Generator

1 Answer

I have an Ef3000iseb runs great here at or about 5000 ft. go up in the mountains it starts loading up and wont run. is there a higher altitude kit?


Yes thats true
there is high altitude re jetting in the carburator your carb has to be re jetted for the normal operation of the generator at high altitudes by the authorised personel but when you will bring it back again at the orignal altitude it will get heated quickly and may not function properly so you will have to bring the carb settings to its orignal position so be careful

Aug 12, 2012 | Yamaha Ef3000iseb Generator Portable 3000...

1 Answer

I am interested in a generator that can light a 3-bedroom hse and a chauff cutter


Your cutter machine may use more power than your whole house depending on the size of motor. A one horsepower motor 115v will use about 3000 watts to start and about 1000watts to run. To estimate how much power you need, add up all the watts that you will use at home and add to that estimated wattage of the cutter motor (motor will use 3x rated wattage to start plus loss of power thru the extension cord). Buy a generator that will give you needed power and still have a 25 percent reserve. If you need 2000 watts on a continued basis, the 2800 watt may be good, however I would be more comfortable with a 3500 watt if the price was right because of the cutter machine. I would consider converting the cutter to gas power and buy a smaller generator to save on gas since you will be most likely running the generator far longer to power the house. Good luck

Aug 11, 2011 | Yamaha 2500 Watt Industrial Inverter...

1 Answer

Had to tickle the throttle on my yamaha 3500 watt


You should have automatic or manual choke control. Try to find it and open it during start. After that you can close it if stable work is achieved.

May 30, 2010 | Yamaha 4500 Watt Electric Start Generator...

3 Answers

My 3000 watt yamaha inverter when under load, and gets hot outside, or in direct sunlite, above about 75 degrees, starts chugging and barely runs, and will not make power. After I turn it off,,,let it cool...


Yep. I have a few ideas.

1) Fuel system is vapor locking. Make sure that the fuel lines are routed as they were from the factory. Remove any aftermarket filters that you may have installed.

2) Fuel system is being pressurized. Most common when the vent on the fuel tank is clogged for whatever reason. Pressure builds up, and fuel is forced through the carburetor, flooding engine. Easiest way to check for this one is to crack the cap on the fuel tank after the engine has started having troubles running. If starts running better (may take a moment), time for new vent.

3) Engine oil is low. Friction is increasing, engine damage is occuring.

4) Engine oil is not circulating. Oil pump (if equipped), clogged filter, etc. Engine damage is occuring.

5) Air intake for cooling on engine is blocked / clogged from debris. Very common, actually, you would be amazed how much debris accumulates here on all engines even if they are operated in environments where it normally wouldn't be suspect. Remove the cover and clean it out. You may not see debris, but it could be coated with dirt / mud / etc.

Nov 23, 2009 | Yamaha 2500 Watt Industrial Inverter...

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