2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 162Get this manual
FINAL DRIVE engagement offers an advantage over mechanical systemsWhen the AWD button is switched Off the ATV is in wheel driveWhen AWD button is On All wheel drive will be engaged whenever the rear wheels lose traction, to give the operator full time All Wheel Drive3Remove the two brake caliper attaching boltsCAUTION: Do not hang the caliper by the brake hoseUse wire to hang the caliper to prevent possible damage to the brake line
FRONT HUB REMOVAL (AWD)
If an AWD problem is encountered, thoroughly inspect the electrical portion of the system as well as the front hub mechanismRefer to the electrical chapter
4Place catch pan beneath the front hub and remove the hub cap5Remove cotter pin and nut6Remove front hub and bearings