Just bought it, and it runs like new but the front wheels aren’t locking in. I was told from the guy I bought it from that its full time 4 wheel drive and that his brother was riding it and he heard a pop sound come from the front and it hasn’t worked since. I’m new to all of this atv stuff, but very mechanically inclined and can follow instructions if someone could give me some direction to go in to start checking it out. Thanx in advance for any help. Magiver