Do these things ever stop? traded a freind of mine for it 2 months ago not running turned out some one had redon the carb and turned the mixture screw all the way in causing it to run very lean just burnt valves though after getting it running the engine has a knock in it not shore what that is?? but has not efected it for the past 2 months I've ran the crap out of it 2-3 feet of mud flowting the valves for hours. even got the clutch so hot it would not move. let cool and and it goes like nothing had ever happend. this is my first kawi and ive got to say thay built it to last! very inpressed with its abilitys for being a small utility atv.