I have a Husqvarna 2016 FE501 with 110 hours on it. I’ve had it since new and changed the oil every 10 hours. In the book it calls for a new piston, timing chain, valves, valve springs, all engine bearings at 135 hours. What is actually necessary to change and at what hour mark? How long are most guys going on a top end? I don’t race, I ride everything from Street to tight technical single track in the woods or desert. I was thinking about doing the top end work at 200 hours. Is this too long on the original piston? Any other work I should do right now at the 110 hour mark?