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2002 Yamaha 15 hp four stroke carb problems

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  • 2002 Yamaha 15 hp four stroke carb problems

    I have a 2002 15 hp four stroke Yamaha that has carb problems . It seems to be blowing gas out the overflow on the top of the card . I tried adjusting the float but it still does not seem to work . I am stumped . Any help would be great , Thanks

  • #2
    Re: 2002 Yamaha 15 hp four stroke carb problems

    did you clean out the needle valve??? sounds like you may have some trash in there
    Free ignition troubleshooting guide http://www.cdielectronics.com/techni...ort-documents/
    You will need a DVA adapter http://www.usatoolwarehouse.com/usat...e/ESI-640.html First test compression, Second test spark with a spark gap tester set a 7/16 gap, Third check timing, next CLEAN your carbs properly,

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    • #3
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      Re: 2002 Yamaha 15 hp four stroke carb problems

      Originally posted by SparkieBoat View Post
      did you clean out the needle valve??? sounds like you may have some trash in there
      I have cleaned everything possible three times over . I thought that the needle valve was bad but I see nothing wrong with it . Maybe buy a new one tomorrow . Very confused!

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