Thread: backfire
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Old 03-31-2011, 11:30 AM   #7
GoTeeMan
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Join Date: Jun 2009
Location: Owatonna, Minnesota
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Default Re: backfire

Ah backfiring, I knew you well. Here's the deal, the spring on the accelerator cable should be between the cable stop and the throttle lever and should be FULLY compressed when your foot is OFF the pedal.
Leave the key off, take the seat off, slowly push on the pedal and make sure that for the 1st inch or so of travel of the pedal that the throttle lever doesn't move (stays closed). If the spring is not compressed then the throttle butterfly is not fully closed, air and fuel are still getting in and BANG!!
Are you able to run at VERY low speed (practically crawling)?, if not the spring is not adjusted correctly.

Before you change anything take a picture and post it here for us to see, then we can help more.

Good luck!
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