trail riding in 4wd
#1
#2
Since you don't say what model and year I'll just take a wild guess. If it's a Sportsman or Scrambler with the 4WD in the hubs check your hub fluid. Sometimes changing the fluid and making sure it's full helps with 4WD problems. If the 4WD is in the diff like it sounds like you may have a cracked roller cage. If you go riding with it that way it will make it worse.
#3
#4
#5
Polaris doesn't have a limited slip differential. When the 4x4 engages all 4 wheels are locked in.