The quad will rev up fine while it is at rest but if you take off and put a load on it the bike cuts out and back fires at about half throttle. I have went threw everything that I can think of that can cause this and nothing had fixed it. Need help! I took a carb of another warrior that was running fine and put it on mine and that did not fix it, I put a new cdi box on and nothing, adjusted the valves, put a new stator on it and messed with the parking brake switch. I also took every connection on the bike apart and cleaned the plugs very well. Two new spark plugs, a battery and know I have no idea of what to do. After all that I took it to a dealer and they were of no help.

 

try undoing the airbox from the carb and see if that helps b/c on my quad it was doing the same thing and i undid it from the carb and it runs great so i just got a clamp on

 

Inspect the boot that connects the carb to the motor. They sometimes get a tear in them letting in Air which will cause that. Take it off the quad and kind of bend it around to see. If does there like $50 from a dealer. My parents old Big Bear 350 did the same thing and the boot had a tear in the bottom of it you couldnt see.

 

Definitely check the intake manifold, it's a weak link on the warrior. Also, if you haven't tried it yet, maybe check the valve adjustment. A valve adjusted wrong can cause all kinds of erratic problems.

 

try your park brake leaver it might be stuck on it was on my friends wolvey back fire and stuff try it .it has a rev limiter on it i think like the wolverines

 

well primopro did you figure anything out?