Searched and found some very enlightening threads, have a lot of bookmarks to read through now. Bought an old 450 about a year ago and we ride around fish camp, seen quite a few hours until one day it finally stopped working and kids had to walk back. Runs fine but no-go. I don't know squat about these things but figured had to be clutch related so I popped the side plate off to check the belt and found that the nut that holds the CVT clutch/sheave or whatever that is was just laying in the pan I pulled off. No big deal right? Popped the washer back on and torqued the nut down as hard as I could, test ran it and she ran great. Kids jump back on and 10 minutes later same thing. So, obviously I've either got a more serious issue or I simply did something wrong putting it back together. I learned from my search that I should have removed the belt prior to torquing the nut back down. This 4 wheeler is 200 miles away and on an island, so forgive me I'm going by memory and unfortunately didn't take pics at the time. Obviously I've not given you a whole lot of info to go on, hoping this is a common enough problem though. What all do I need to bring down there in terms of parts? I want to be sure it's ready to roll on my next trip. I'll be watching YouTube videos all night so I have the procedure down.