1999 Ski-Doo Factory Shop Manual Volume One, Page 270Get this manual
Section 06 ELECTRICAL Subsection 05 (ELECTRIC STARTER)
CLEANING AND INSPECTION CLEANING-
CAUTION
Armature starter yoke ass'y and drive unit assembly must not be immersed in cleaning solventClean brushes and holder with clean cloth soaked in solventBrushes must be dried thoroughly with clean clothBlow brush holder clean using compressed airF01H0RA
1Commutator undercut 0.20 mm (.008 in)
WARNING