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  1. General ATV Discussion
    So I was having issues with the carb because I had to have it choked to run around on my brute force 650 2008. I rebuilt it and now whether I choke it or not it does on idle, also it will backfire if I run it normally, but if I choke it it will run with no problem until idle.
  2. Yamaha ATVs
    So I have a 2008 Yamaha yfz450 with Yoshmira comp series full exhaust setup, and K&N air filter. It currently has a JDJetting 175 main jet in it but it’s running lean and backfiring everytime I let off throttle it backfires and occasionally even shooting flames. The K&N calls for a 210 main jet...
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