Yamaha ef1000 will start then push choke in and generator stops

The OHV engine requires periodic valve adjustment.

If it's been setting for a couple of years it might be best to get rid of the old fuel and put in a new spark plug. Check the air filter and even run cleaner through the carburetor if you can get the fuel jet out its possible to have a piece of dirt in it as well. That alone will keep the engine from not running properly..

Coleman engine starts runs short time quits Power ... - Fixya

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Coleman Powermate 6250 only runs with choke closed/air restricted ...starts and runswith full choke, but dies with choke off. ... some gas in the cilinder through the plug hole)and start the engine until it runs constantly. bestregards ... Ad ... I use a fuel stabilizer ... ...engine runs fine but produces no power at all to the breaker.

Coleman car starts but will not stay running Power ... - Fixya

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Question about Powermate Premium Plus 6250W Portable Generator ... squirt a little gas in the carb it will run until gas is gone doesnt seem to get gas from . ... ...starts and runs fine for about a minute, then dies as though starved for fuel. ... load up on fullchoke and stay running around 3/4 choke HI, Turn off the gas and take ...

Generator runs then shuts off - YouTube

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How to make Generac generator run bypassing the low oil sensor and ... Remove all; Disconnect .... My ...

This generator is equipped with an auto choke. What is likely occurring is as the engine warms up the choke is returning to the normal choke off run position leaning the mixture two lean to maintain operation of the motor.

This is occurring because the residual fuel that was left in the carburetor has evaporated and the gum residue is reducing the fuel flow through the carburetor. When the choke is applied the mixture is rich enough to support running and as the choke returns on its own to the run position the mixture leans out and the generator stalls..

Override the choke when the engine is starting to falter to confirm the problem. Continuing to attempt to run the engine possibly adding a carburetor cleaner additive to the gas will likely return the unit to normal operation.

If attempting to enrich the mixture by applying choke when the engine begins to falter does not work then a fuel flow problem to the carburetor may be the root cause. I would look for a plugged fuel filter or restricted fuel flow from the tank to the carburetor. What is happening is when the unit is at rest the carburetor is filling with gas and as it is running because of a restricted fuel flow the level lowers in the carburetor bowl resulting in a mixture to lean to run.

A consumer guide to Yahama's Premium EF1000 with specs, pictures, reviews, and manuals to download. www.poweredgenerators.com www.poweredgenerators.com/yamaha/premium-ef1000.html
hope this will help you

Hi Joe, I had asked for a little clarification and have not received any information. I will answer this question based on the generator is in good working order and it is a recoil start. Open the petcock, (this is the fuel valve) and give it about a minute to fill the fuel bowl on the carburetor. If your generator has an engine an on/off kill switch, set to on. If the generator has an auto idle switch set it to off. If the engine has a throttle lever located under the carburetor, push it all the way down (full throttle). Pull the choke knob out completely, there is a detent on the choke for half choke, pull it past this for full choke. pull the recoil starter rapidly. As soon as the engine starts running push the choke knob to half choke, this will allow the engine to run smooth while it's warming up. Depending on the climate that you are in, warm up time will vary. After a minute or two in cold climates start pushing the choke knob in, if it starts to run poorly pull it back out too the half position and let it warm up some more. When you can posh the choke in without the engine faltering it is ready to go. In warmer climates you might be able to start the engine without the choke or in the halfway position. Robin Subaru makes some of the finest small engines available. I would choose a Robin over a Honda every time. I hope this gets your generator going, and once again this is based on the generator being in good working order. Good luck, Michael Burke.

can be dirt in carburator take of and clean well. blow with airgun on fuel restrictors. also check choke mechanisme.

Only a suggestion. Sounds like the carberator has trash in it. You need to try to clean out the carb and check out the gas tank to make sure that that there is no trash in the tank. When opening the choke lever that allows another way for the fuel to get to the engine in order for it to run.

Where can i obtain a manual for the 5500 gas generator

Hi, I have the same generator and I pull the load and it is fine. The engine RPM is controlled by the 
governor. The voltage will not come up until the RPM is at full. First see what the RPM problem is and then check the voltage. Open the cover and look to see if the carb linkage is hooked up , if it is you mite have carb problem and address that first. Hope that helps.