2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 406Get this manual
ELECTRICAL Starter Reassembly CAUTION
Use care when handling starter housingDo not drop or strike the housing as magnet damage is possibleIf magnets are damaged, starter must be replaced1Inspect permanent magnets in starter housingMake sure they are not cracked or separated from housingPlace armature in field magnet casing2Place shims on drive end of armature shaft with phenolic washer outermost on shaftEngage tabs of stationary washer in drive end housing, holding it in place with light film of grease3Install case sealing O-RingMake sure O-Ring is in good condition and not twisted on the caseLubricate needle bearing and oil seal with light film of grease, and install housing, aligning marks4Install O-Ring on other end of field magnet casingMake sure it is in good condition and not twisted on the case5Align casing marks and install housing, pushing back brushes while installing shaft in bushing6Reinstall starter motor housing boltsMake sure ORings are in good condition and seated in groove7Align brush plate and install cover and screws8Install the starter onto the engine caseHand tighten the starter boltTorque the bolt to ft.lbs(12 Nm)