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backfire sputtering

  1. Need help with my 04 Raptor 660

    General 660 Discussion
    so i can ride and stuff for about an hour but then it starts to bog and sputter and backfire. does anyone know how to clear it up. i cleaned the carb and changed the spark plug but it still does it. does have a hmf pipe if that has to do anything with it
  2. 2005 raptor 660 sputtering and backfiring at 1/4 throttle

    Raptor 660 Maintenance
    Hey guys new to the forum, i apologize in advance for punctuation. The raptor was taken to different shops and was taken apart when i got the raptor it wouldnt turn on the harness was cracked and broken so was the ignition it was missing an oil line and motor mount. I ordered the parta and got...
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