Polaris RZR 570 2017 Owner's Manual For Maintenance And Safety page 46

FEATURES AND CONTROLS
All Wheel Drive/Rear Differential System
Disengaging AWD
Move the AWD switch to the center or bottom position to disengage
AWD. If the switch is turned off while the front hubs are driving, they
will not release until the rear wheels regain traction.
In some situations, the front gearcase may remain locked after turning
the AWD switch off. If this occurs, you may notice increased steering
effort and some vehicle speed restriction. Perform the following
procedure to unlock the front gearcase.
1. Stop the vehicle.
2. Operate in reverse for at least 10 feet (3 m).
3. Stop completely.
4. Shift into low gear and drive forward.
5. If the front gearcase remains locked after following these
instructions, see your dealer for service.
Locking the Differential
NOTICE: Damage to the differential can occur if it is engaged while the vehicle
is traveling at high speeds or while the rear wheels are spinning.
Slow the vehicle to nearly stopped before engaging the differential.
Locking the differential in slippery or low traction conditions helps
improve traction. Move the rocker switch to the center position (2WD)
to lock the differential and operate in rear wheel drive. See illustration
below.
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