i went to check my 4wheeler this morning. and since it wouldent go in reverse yesterday i had to pull it out of the barn . well witever i did fixed the shifter. i gave it a good washdown & it seems to be doing ok. i do have to change the fluid in my front tire. and my bearings in the right rear . how exactly do i change the bearing and wut kind of bearing do i need to ask the polaris dealer. also do i need any seals or extra parts. if u have any suggestions plz help......