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Plastic End Of My Pipe Got Hot And Melted...


glennp
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my 2011 txt pro 300 always seemed like it was running lean. Knocked on acceleration and sometimes backfired on deceleration and I would sometimes need to use the choke to start it when it was warm and it was always a finicky starter. I moved the clip down one position which was the bottom. I turned in the fuel air screw until the idle sounded good. I rode it around and the exhaust seemed a bit richer and it ran well and started better. After 30 minutes of riding the plastic end of the muffler melted and spit out the aluminum spark arrestor. I thought a richer fuel mix would make it run cooler. I use this as a trail bike and it has well over 1000 miles on it. Was this just a symptom of a clogged exhaust? Should I just clean and repack my pipe or am I missing something? Thanks!

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