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About RatMotor

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  1. Just bought a 2008 505 xc-f this weekend, was flipping through the owners manual last night and they give you absolutely no clue how to check the valve clearances. They give a schedule, and specs, but no step by step. Search function didn't yield anything helpful, can someone post up or link to some help?
  2. I have an '06 Husqvarna SM610 with a Keihin 41 FCR. The bike runs great except for a midrange stumble that I just can't seem to get rid of. It only seems to happen at steady throttle or trailing throttle between 4k and 5k RPM - on accel everything is fine. It feels as though the bike is misfiring, or otherwise losing power for a split second. Current setup is 180 main jet, OCEMP needle in the middle(4th) clip position, 58 pilot jet, 100 air jet, about 2 turns out on idle screw, and a Leo Vince full exhaust system. The only thing I've been able to do that seems to affect it at all is going to bigger and bigger pilot jets, I haven't played with the air jet yet. Any ideas?