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My sthil ms 200t runs at full throttle only but dies when finger is off trigger new carb and fuel filter

Posted by david paul warner on

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5 Related Answers

Anonymous

  • 14 Answers

SOURCE: only runs on full throttle

Are you saying full throttle, or full choke? if full throttle, you should be able to set the idle up. the idle screw will be the one when you give it gas, it will be the screw on you'r throttle linkage. If full choke, maybe the spark arrestor is plugged. You can remove it by removing the muffler.It would be between the muffler and cylinder head. You don't need this to run.I hope any thing I posted will help.

Posted on Jun 19, 2009

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Kerry Degrand

  • 112 Answers

SOURCE: Engine starts but dies when I pull throttle trigger

you need to adjust the high speed needle turn it out in 1/4 increments as you throttle it, low speed may have to come out alittle but do high speed first. I had to answer this as I use to have a pastor john in sturgeon bay, miss him alot.

Posted on Jul 24, 2009

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Brian Anderson

  • 389 Answers

SOURCE: Stihl MS290 only runs if the gas tank vent valve

sounds like you have a plugged vent either in the gas cap or the vent valve of which you speak. Without the vent working properly, the engine running and drawing gas from the fuel tank causes a vaccum inside the tank making it harder for the fuel to draw to the carburator. this would cause the symptoms that you are talking about.

Replace the gas cap if it is vented or check to see if the vent valve you mention is working properly.

Good Luck

Posted on Dec 21, 2009

iain kelly

  • 311 Answers

SOURCE: ltz 250 wont idle needs full choke to run.cleaned

hi,sounds to me like the air fuel ratio is all up the ***,locate the air/fuel screw on the carb(normally on the side)screw the screw right in untill it stops,then back the screw out 1.5 turns,this should get the bike to run without the choke,once you have the bike running simply turn the screw in or out untill the bike settles into a nice steady idle,should be good to go,hope this helps...cheers

Posted on Mar 27, 2010

Anonymous

  • 7 Answers

SOURCE: Craftsman model 358.791042, gasoline weedwacker wont stay running

let it warm up first and then pull the trigger. if that doesnt work, it might be the diaphram . they are cheap.

Posted on May 12, 2010

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Since you don't indicate the make and model, I can't give you specifics, but when I had this problem it turned out to be a dirty carb. This can cause uneven fuel flow and loss of power. At full throttle, you may not be getting sufficient fuel to work properly. Try cleaning the carb a nd update this with the results.

Dan

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