hello all, i am on the snowmobile forum and i just joined this one. but i have a 2002 400 sportsman and the 4wheel drive has been acting up. the front right wheel doesnt spin when 4 wheel drive is engaged. and this fall i had a hard time holding the handlebars cuz the 4whweel drive was kicking in and out. i dont understand anything about them. is it something i can take apart and fix myself? thanks for your time.