Question about Yamaha 1,000 Watt Portable Generator #EF1000ISC

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It lobes with or without load. Cleaned airfilter, drained float bowl, checked oil, fresh gas

I have a Yamaha EF1000is generator and it lobes. I cleaned the air filter, checked oil, and plug. I drained the float bowl and put fresh gas in it. It has aprox 8 hours use on it.

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Try the filter in the gas tank.

Posted on Apr 24, 2009

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I have a EF24000is yamaha that stalls when a load is put on it


Hi, Raimo and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
13. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
EF1000is stalling
Honda generator won run under load
http://www.yamahamotorsports.com/assets/service/manuals/0/LIT-19626-01-23_1423.pdf
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turn on device and wait for response inspect every component for malfunction

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Gas runs out of carb drain on miller welder generator 301g trailblazer


if it is the float bowl drain leaking, close the drain. If it is the vent, clean float bowl and needle and check level. Next time, drain the fuel out of float bowl after you run it if not planning to run it for 30+ days. That is why they put drains on generator carbs. Modern ethanol turns to gum real quick. Tell you congressman you think ethanol sucks and the new 15% ethanol the farm lobby is trying foist off on us is going to be a disaster for small engine owners.

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Generator Won't start


Gap the plug at .030 What is most likely the main problem is whatever gas sat in the carb. Even with fresh gas there will be some old gas still in the float bowl. You may be able to drain the bowl and be OK but I have a feeling that the carb will need to come off and be disassembled and cleaned properly. You can try spraying carb cleaner (I dislike starting fluid as it is too volatile and carb cleaner does just as well in this instance) into the carb/intake. Remove the air filter, open the choke, and spray the carb cleaner in through that way if possible. You can actually keep an engine running by spraying with short bursts. Even by just spraying once you should be able to get the engine to start. If it does start but then will not stay running without spraying more into the engine then it is a carb problem.

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1 Answer

Dropped power washer into pool. Is washer fixable and how much. Is it worth getting fixed or buy new one?


This is a relatively easy SELF correction process. Mind you a pool is FRESH water.

1. Drain all gas by remove the hose that connects to carb and completly drain the gas tank. (If there is an in line fuel filter or glass debris bowl, change filter / empty bowl.
2. Remove float bowl nut and bowl and purge water. Spray carb with carb cleaner while float bowl is removed. Paying particular attention to the float bowl nut thread area (throat)
3. Drain Oil. AFTER step 5.
4. Pressure Pump oil should be fine as it is not vented. (depending on pump installed but none of them are vented.
5. Remove spark plug and put about 1 ounce gas directly into the cylinder IGN OFF! Pull recoil and let gas exit spark plug hole. Reinstall a NEW spark plug BPR5ES or similar
6. Service engine oil
7. Fan dry the unit over night. Simple floor fan will do. Leave the gas cap OFF / float bowl open overnight during Fan Air dry.
8. Next morning service gas tank
9. Select fuel on and let a small amout of gas leak before installing the float bowl and nut making sure the float bowl gsket is installed against the top of the float bowl.

Final testing time... Ign. on.. Test spark first. Spark check good. FUEL ON. Start.

Just make sure to change oil again in 10 hours. Water in oil will cause the oil to appear milky.

You can do this. Worst case the electronic ignition module fails. (They are cheap... !) Most of the time the coil will not need to be changed.

That is water de-contamination 101 and you just completed the course. Give it your best shot. It beats buying a new one and yes it is worth repairing.

Thanks for choosing FixYa.

Kelly
P.S. Oil the TIRE / WHEEL bearings.

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Remove & Check Float bowl on carburettor for any foreign matter. If there is any, it could have got into jets causing engine to run lean (only run with choke) and not be able to carry load in this state. A cleanout of the carby would not hurt and check the fuel tank for any sediment as well.

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G'day, sounds a bit like the float valve in the carby might be stuck nearly shut or just some moisture in the carby, a light tap with the handle of a screwdriver on the side of the carby bowl should fix it if it's the needle stuck shut (happens from sitting sometimes), or maybe try loosening the drain screw in the bottom of the carby bowl to drain any water etc out, hope this helps :)

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