Engine Disassembly / Inspection - Lower End; Crankcase Disassembly; Flywheel / Stator Housing Removal; Starter One-Way Clutch Inspection - Polaris 2014 Sportsman 570 EF Service Manual

ENGINE

ENGINE DISASSEMBLY / INSPECTION - LOWER END

Crankcase Disassembly

NOTE: The engine top end, starter motor, stator
cover, starter drive, flywheel, stator, cam chain, oil
pump and sprockets can be serviced with the engine
installed in the vehicle.

Flywheel / Stator Housing Removal

1. Remove the stator cover as outlined in the "Water
Pump Mechanical Seal / Oil Seal Replacement"
procedure" in this chapter.
The flywheel contains powerful magnets. Use caution
when removing the stator cover.
DO NOT place fingers between cover and crankcase at
any time during the removal process or injury could
CAUTION
Be sure engine coolant does not contaminate the
engine oil during stator cover service.
2. Remove starter drive gear and shaft(4). Inspect gear
teeth for damage. Inspect fit of shaft inside gear and
replace gear assembly if clearance is excessive.
Inspect shaft and shaft bearing surfaces in case and
stator housing for wear.
3. Hold flywheel with a commercially available strap
wrench and remove flywheel nut and washer.
Discard the flywheel nut and replace for assembly.
NOTE: The flywheel nut has standard rotation
(right hand) threads.
3.68
CAUTION
result.
9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
4. Back the center screw of flywheel puller PA-49316
completely out and screw puller onto flywheel
completely.
5. Tighten center bolt of tool PA-49316 and remove
flywheel.

Starter One-Way Clutch Inspection

1. Remove flywheel as outlined in this chapter.
2. Place flywheel on work bench. Grasp gear and rotate
clockwise. It should turn smoothly without binding.
3. Rotate gear counterclockwise. The gear should
immediately lock in position and not slip.
4. Inspect inside of hub (A) for wear, galling, or uneven
surface.