I have had NO problems with my but except for, since i bought the bike 2 months ago it has been backfiring when i let out the throttle after accelerating. it doesn't back fire loud, or like a lot, more like a sputter. what would i do to get rid of that?
Hey i have several solutions for you.
The first is have you checked valvue clearence lately, because if the valvue clearence is either to high or to low then it could cause it to back fire. The next solution is repacking your silencer. The next solution is there is two main gaskets in most dirtbikes, one, which is located where the pipe mets the motor. Also the other gasket it where the mid pipe meets the head pipe. The bike fire is usually being caused by extra air. By the way checkin valvue clearence is extremley easy it may sound hard but I do after every ride.
I don't know if what you're hearing is the cackle you get when you get off the throttle at high rpm or just a general backfire. If it's getting off the throttle at high rpm then it could just be that your muffler has broken in and it's just rumbling or cackling down. Try a new muffler or enjoy the sound. Other than that, maybe you are due for a tuneup on the bike. Pull the spark plug out and inspect it to see if its burned up or something. I checked your service manual and couldn't find any suggestions for exhaust backfires. Sorry I couldn't be more specific.
Good Luck
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