2009 M8 SnoPro. I just rode yesterday for the first time on my new clutch kit. 48 - 36P helix, orange primary spring, 73gram cat weights, shift assist, stock secondary spring. 3200 ft to 6,000 elevation. The clutch engages so ROUGH now it is scary. After it enages a crunching, grinding sound happens during takeoff that I couldn't tell if it was ice under the track crunching - or if it is something in the clutch. Also, during slow movements lining up for the sled deck etc. it WHACKS in and out of engagement terribly. Feels like I gotta be doing damage somewhere. Any help much appreciated, I want to ride today
Once you get your belt deflection correct you'll likely still have a banging, not as pronounced , but still sounding like it could be causing some damage. If you want to smooth it out here is one way that has been used on at least 10 M sleds around here. It was accomplished by grinding a flat spot 1/2"+ long on top of weight centered on the spider roller bearing when clutch is fully open. Only 1/4" of flat spot comes in contact with roller as arm shifts out. I've ridden 2 sleds with this mod . 1-my '09. 2- my buds '08, both were equally obnoxious beforehand and now are smooth. We do a lot of on & off the throttle riding and this banging became very aggravating. If you want more information about this call Jon at Jon's Golf & Ski in Yakima, Wa. (509) 575 0159. He's an ardent snowmobiler, with a 1100 BB and a M7 turbo and works on a lot of snomobiles. I mention this because the name of his business doesn't sound very snowmobilly.
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