2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 214Get this manual

2009 Polaris Sportsman 850 XP EFI EPS Service Manual, Page 214

FINAL DRIVE AWD Operation The AWD switch may be turned on or off while the vehicle is moving, however, AWD will not enable
wheels are spinning, release the throttle before turning the AWD switch onIf AWD is engaged while the wheels are spinning,
severe drive shaft and clutch damage could resultAWD Disengagement: Once the rear wheels regain traction, the front wheels
will return to the "over-running" conditionThe vehicle is now back to rear wheel drive until the next loss of rear wheel
traction occurs Armature Plate Ring Gear AWD Engagement: When the AWD switch is activated, the AWD coil is powered by 12
Vdc input which creates magnetic fieldThis magnetic field attracts an armature plate that is keyed to the roll cageWhen the
ring gear and roll cage are spinning (vehicle is moving), the energized coil and armature plate will apply drag to the roll
cage that indexes the rollers inside the ring gear to an engagement positionWhile in the engagement position, the front drive
will be in an "overrunning" condition (not engaged), until the rear wheels lose tractionOnce the rear wheels begin to lose