Sportsman 800 AWD problem. 4x4 won't engage

[mudder888]

I am having a problem with my 2006 Polaris Sportsman 800 that I bought used.
AWD won't engage. The screen lights up HOT and Chek engine
The 4wd light does not comes on.
Every function on the speedometer appears to be working properly.
I think it's something electrical because the problem arised right after replacing old dead battery.
Please need help or send me the directions for checking out the front end.

[mikertldg]

You should change your front diff oil cause if you been in the water the discs in your diff rust and wont make contact and wont engage 4 by 4! Not a foresure solutions but worth a try

[PhilJBergman]

check to see if your getting 12 volts to the front diff. There are two wires a postive and a ground going into the front diff. If you are getting 12 volts to the front diff but still no 4wd then you have a mechanical problem. ~Phil