Question about Yamaha 2500 Watt Industrial Inverter Generator YG2800i

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Yamaha EF1000is, Will no run without choke on

I have a Yamaha EF1000is, that will not stay running unless the choke is pulled out. If I push the choke in, it revs up, then nearly dies, then revs up etc, until it does finally die. Any ideas on what the problem may be?

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  • Yamaha Master
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It is starved for fuel. PROBABLY needs to have carbureator cleaned and adjusted OR the fuel filter may be clogged.

Posted on Nov 02, 2009

Testimonial: "Thanks for the help, it turned out that the intake jet was totally plugged. Cleaned it out and it runs great."

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I have the same thing. picked it up used. I did clean the carb, BUT I think that one needs to do more then just gently **** out the jets with a fine piece of COPPER wire. Try soaking all the carb parts on a carb cleaner for a few hours and blow everything put with compressed air.

Posted on Dec 06, 2009

  • philippenoir Feb 12, 2011

    I have the same problem, after carb cleaner and fuel filter .do you have another solution ?

  • Ed Greene
    Ed Greene Dec 06, 2016

    your idle jet is clogged. get seafoam or carb cleaner spray and spray into tiny hole near choke flutter behind the air filter. start the engine cold and spray it in the tiny hole with he straw provided on can. if this does not work repeat but only spray small amounts so the engine dont stall. also remove end cap on exaust and clean out spark arrester and keep out while spraying into carb. works wonders

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Posted on Jan 02, 2017

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