2005 Ski-Doo REV Series Shop Manual, Page 318Get this manual
Section 07 ELECTRICAL SYSTEM Subsection 03 (STARTING SYSTEM)
Test the Armature for Open Circuit Use growler test probesPlace one test probe on commutator bar and the other test probe on the neighboring barRepeat this operation for all bars, moving one test probe at timeIf the growler lamp does not turn on, the armature circuit between these bars is openedThe armature should be replaced or repaired; open circuits most often occur at the commutator riser where coils are soldered(Burnt commutator bars are usually an indication of an open-circuit armature coil)Brush Holder Check the brush holder for insulation using growler test probesPlace one test probe on the insulated brush holder and the other test probe on the brush holder plateIf the growler lamp turns on, the brush holder has to be repaired or replacedBrush Length Measure brush lengthIf less than the specified value, replace themMODEL All LENGTH NEW 10 mm (.400 in) WEAR LIMIT mm (.236 in)
A32E22A