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
2009 Yamaha EF2000IS EF2000IS OEM Parts

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1 Answer

21" Troy Built Self Propelled lawnmower engine won't start.


Remove spark plug, clean or replace. Remove air cleaner, clean or replace. Ensure oil is full. 30w. Drain old gas out of tank. Fill with fresh gas with Stabile added. Remove bowl from bottom of carb. clean. Observe bowl screw, see if hole goes thru screw. Clean out. Bread wrapper works nice. Observe float. Float down gas flow, float up no gas flow. Re-assemble, prime 3 times, pull rope 10 times to start. No start replace carb.

Jul 30, 2013 | Garden

1 Answer

Husqvarna riding mower, (Model: YTH2448) won't turn over


turn on device and wait for response inspect every component for malfunction

May 13, 2013 | Husqvarna Garden

1 Answer

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.

Apr 10, 2013 | Miller Trailblazer 301g Cc/cv, Ac/dc...

1 Answer

Troy-bilt 34322 343220110815 mower will not start


Dump out old gas. Fill with fresh gas. Always use Stabile in gas. Clean or replace park plug and air filter. Check oil level. All mowers have a low oil start cutoff. 30w oil. If any grey in oil moisture contaminated, dump out old oil and refill. Check fuel line for cracks or leaking. Check primer bulb for cracks, replace if required. Clean outside of carb with carb cleaner to ensure easy choke operation. Remove carb bowl from carb, ensure float hangs down freely. float down fuel flow, float up fuel flow stops. Check bowl screw for hole thru bolt, if so clean out hole.

Sep 11, 2012 | Troy Garden

1 Answer

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.

Aug 24, 2012 | Coleman Powermate 6250 10hp Generator

1 Answer

Yamaha 2000 run poorly at higher altitude


What elevation are you at? Start with simple things such as clean the air filter, fresh gas, clean/replace spark plug. Also check oil level most generators have a low oil shut off yours may be attempting to shut down

Jul 26, 2012 | Yamaha Sidewinder Twin Tech Generator...

1 Answer

Engine will not run, but will start with a starting fluid. I have changed the spark plug, air filter, oil, and fresh gas.


Sound`s like your not gettimg fuel. 1 take fuel line loose from carb. (have a bolt handy to plug gas line unless the gas is old then drain gas into a suitable container for disposal.)2nd take fuel bowl off of carb. should be 1 bolt thru the bottom holding the bowl on. Be carefull not to tear gaskett. Float assy. should drop down,but should not fall out. 3rd take aresole can of carb. cleaner with the straw attached and clean the float bowl, the float area. watch for over spray onto painted area,wear glasses to protect eyes. wipe off overspray as soon as possible.4th clean jet,place straw i,nto small metal tube that looks like a part of a metal inkpin located in the center of the float comming up from the bottom. 5th,open the choke/throttel plate inside the large opening in the carb and spray that area if you can see any metal trubes in that area place the straw into that and spray.Re assemble in reverse ordear that you took it apart. Be sure to pay attention to the gaskett or you will have leak`s. rre fill with fresh gas should start and run. If you do not use equipment every week then you may want to put a gas additive into the gas tank to help prevent this from reacureing. I use a product called Sea Foam Good Luck

Sep 14, 2011 | Briggs Stratton H7159 & Stratton® 5500,...

1 Answer

Used once and it ran fine shut it off and wont start even with ether. Changed the plug checked the spark which is fine. Drained gas put all fresh gas in Generator was slightly tipped up and found oil on...


If this unit was tipped over and you found oil in the air filter, there is a chance the oil entered the top of the piston as well. Never lean a engine over. If you have to make sure the spark plug is facing up, that way the oil stays in the cranckcase. If the plug has oil on it then the oil has entered in. Do not use ether. This will do nothing but damage your piston and rings. If you do not have any oil on the plug, are you getting any fuel on the plug? If it is dry it sounds like you have a jet stopped up in the carburator which is not letting fuel to go through. Or it could be the needle on the float is stuck. If so, turn the fuel off, drop the bowl and inspect for these problems. This is a common problem with small engines that are not used very much. They sit up and the old fuel causes the problems. If it is old fuel, drain it out and add fresh fuel before trying to restart. But get that carburator checked and it may need a good cleaning. Good luck.

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