2010 Polaris Sportsman 850 Service Manual, Page 93Get this manual
COOLING SYSTEM Water Pump Mechanical Seal Replacement
Perform the "Water Pump Impeller Removal" procedure1Disconnect the stator and CPS wire harnesses5Support the stator cover by the stator mounting boss, using an aluminum or PVC pipe section or other suitable support block (C) positioned inside the stator housing as shownDo not attempt to press water pump shaft out of stator housing without first supporting the cover by the stator boss, or cover may be damaged
Stator CPS