I bought a 2002 warrior that needed a motor. Found a worked and running 1998 motor locally. To use it in the 2002 we just changed the whole cover W/stator. The problem is it idel fine but when you give it throttle it back fires out the exaust and don't pick up rpm's. Did I need to do something other than just swap stators? The carb had a little water in it from sitting, But seems clean now. I think when i got the bike i bumped the throttle and it sprayed a nice wide pattern with the accelerator now it is just a small straight stream. Has nice strong spark. Any ideas would be a great help...Thanks

 

your parking brake if it is not out all the way it will not let the motor rev. i took mine off

 

I have a 96 and it does something like that but at idel and hi rpm it runs fine but it back fires at low rpm's and it craps out if you dont keep the idel up andI dont have a parking brake . sorry for the hi jack

 

http://www.yfm350central.com

 

It was the parking brake....Thanks

 

cool glad it worked