Sportsman 500 bogging down
Hey guys, I’m new to the forum, I’ve been looking thru and have seen lots of good and helpful advice. I’m hoping someone can point me in the right direction with the problem with I’m having with my 2003 Sportsman 500. My quad starts and runs good for about the first 5-10 minutes/4-5 miles and then it bogs down and has no power for about another 5-10 minutes, then it picks up and runs good for the rest of the ride. It started this after I adjusted my valves (coincidence or not?). When I leave from my home out of town on the same trail it will do this every time on pretty much the exact same spot on the trail. When it’s bogging down it feels like there is no fuel or week spark, if I give it gas it will backfire and sputter, so I just throttle down to where it will stay driving until it gets it’s power back.
Any advice would be greatly appreciated, thanks.
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