Well I have been reading this and it is quite dead at work I have come to a personal conclusion in life. My father has been a very good mechanic for 30 plus years and as taught me a few things about engines. I own a Honda accord with 215000kms on it runs great, my 2 last cars had over 200 and 400 thousand km's on them and I sold them both and to my knowledge are still running today. My brother has 415000 on his Honda accord, my dads truck is at 110000kms his old truck had 150000kms on it when he sold it it all boils down to the same thing. An engine always needs to be warmed up before using it take 5 minutes to start it and let it idle. A cylinder withholds thousands of degrees of heat and tons of pressure involved with lots of expanding and compression of metals as it heats up and cools down so take your time with it even if it is stored indoors. Where I am going with this is... it is basic, take care of your stuff. pre season maintenance, letting a machine warm up before a days ride, washing, greasing, keeping the fluids topped up and the battery fresh. I hear of a lot of people having issues but then I hear that they start the machine and go tearing down the trail. Next thing you know something breaks. If something needs to be jammed to work it is not right so look into it. This site is great for attention to detail and good knowledgeable people to keep us riding year after year and most of us with 10000 plus kms on a sled this stuff is invaluable. Chris Reid does a great job getting information to us and the Sled talk blog is very informative and entertaining. Is Yamaha perfect? No there are flaws but I think most have been pretty well addressed whether they be factory or aftermarket fixes. Snowmobiling is not cheap but in my experience owning high mileage Yamaha's I have only once been left on the side of a trail broke down and that was at 23000kms on a 97 vmax triple with a seized crank bearing. I ride with all doo guys and 10000kms on a sled to them is unheard of and recalls for pistons and rings is common and they got used to it. When I heard that I was like WHAT!?? That is like open heart surgery. That's like saying yea I went to the Dr's and got triple by pass surgery no big deal. UNREAL. I'll stick to my Yamaha and fix the small stuff thanks. I have never heard of a Yamaha needing a rebuild like that. Point of the paragraph is take care of your stuff and they will be good to you!