2008 Polaris Sportsman 500 EFI/X2/Touring/500 H.O. Service Manual, Page 367Get this manual

2008 Polaris Sportsman 500 EFI/X2/Touring/500 H.O. Service Manual, Page 367

ELECTRICAL 4Inspect surface of commutator for wear or discolorationSee Steps 3-6 of Armature Testing'
Armature Testing
1Remove armature from starter casingNOTE: Note order of shims on drive end for reassembly23Inspect surface of commutatorReplace if excessively worn or damagedUsing digital multitester, measure the resistance between each of the commutator segmentsThe reading should be .3 ohms or less
Brush Inspection 1Measure length of each carbon brushReplace brush assembly when worn to 516" (8 mm) or lessThe brushes must slide freely in their holdersBrush Length

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