I have a 2001 Yamaha Wolverine 350 4 x 4 with a problem. I was pulling sleds the other day for about two and half hours I stopped because I realized that I had lost all power. I went out by myself and tried to go up a small hill. I have made it up the hill many times even without snow.This time I started up the hill and just sat there on the throttle but nothing, the tires did not even move it seemed like it was hitting the rev limiter or I was in a really high gear but I was in first. I put a new spark plug gas reset the valves put in a piston rings cleaned air filter and carburetor but nothing works. I saw something about disconnecting parking brake cables and did but it still has no power! Please help! Thanks in advance.

 

disconnect the parking break switch on the handle bars. i had this happen to my warrior if that dosnt work cut the two wires and splice them together