Asking for a friend. We were one day into a four day trip & his sled died. He noticed it was making a "chattering" noise & pulled over. We both know all the general maintenace for our sleds, but not much beyond that. Another sledder stopped to see if he could help. After hearing it, he said right away it was a crank bearing going bad. We had pulled over on a county road that doubled as a trail for a ways. Cars also use the road so we needed to get it moved. As he pulled it around it seized. Has 3500 miles on it. On a side note, he's had alot of clutch trouble with it also. Is it a common deal with these? What's a realistic estimate for repairs? Thanks for any info.