2005 Ski-Doo Tundra, Skandic, Expedition Shop Manual, Page 466Get this manual
Section 08 ELECTRICAL Subsection 05 (ELECTRIC STARTER)
INSPECTION
Armature
NOTE: An ohmmeter may be used for the following testing procedures, except for the one concerning the shorted windings in the armatureCheck the commutator for roughness, burnt or scored surfaceIf necessary, turn the commutator on lathe, enough to remove grime onlyCheck the commutator for mica depthIf the depth is less than 0.20 mm (.008 in), undercut the micaBe sure that no burrs are left and no copper dust remains between the segments after the undercutting operation is completed
A32E20A
1Collar 2Snap ring
Turn starter clutch no6 clockwise to remove it from armature assembly no11Pull housing from armatureV-1000 Engine The starter is not serviceableIf defective, replace with new oneF01H0RA
1Commutator undercut 0.20 mm (.008 in)