I finally got my 87 trail boss running, but now when you go to put it into gear it just grinds and wolt go in. I am starting it in neutral and then trying to shift out of neutral. I never had a automatic or Polaris before, am I doing anything wrong or is there something wrong with the bike. If so what?

99 Warrior
87 Trail Boss
84 ATC200

 

It may just have some bent or out of adjustment shift linkage.

Take a look and see if it is working properly. (engaging the tranny fully)

Hopefully it is not a gearbox.

 

Also, if your idle rpm is too high, it will cause the same problems.

 

Try starting it in forwards that will tell u if it is in the tranny but it sounds to me that your idle is to high just turn the idle down on the carb. I had the same problem on a 96 trailboss.