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  1. Yamaha YFM660R Raptor (2001-2005)
    i have a 660 raptor.Has sat for 2 years. Drained the gas and carbs and got it running. When it idles it is alright but touch throittle and it back fires and sputters and when reved up pipe gets real red as soon as you crack it wide open it is just sputtering some back firing through the carb and...