Question about 2003 Yamaha WR 450 F

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No top end

Runs ok till about 1/2 throttle then just boggs idles great starts right up
has slight hesitation on cruise at lower rpm think it's lack of fuel checked and cleaned carb no difference problem started suddenly

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  • smeagal May 11, 2010

    try a new plugs or plug caps, could be breaking down and short out under load. hope this helps

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Does it have diaphram in carb if so check for slack

Posted on Jun 22, 2009

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Posted on Jan 02, 2017

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You set at the smoothest idle
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How do I adjust needle valves on a 25cc Homelite UT08111A Backpack leaf blower?


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http://tech.flygsw.org/walbro_tuneup.htm

hope this helps :)
if it does please vote

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