Repair and Diagnosis: Electrical: Starter: Overhaul: Inspection: Brushes

Using a micrometer, measure brushes for wear. On GT (A/T), and all other models with reduction type starters, standard measurement is .69" (17.5 mm). Minimum measurement is .47" (12 mm).
On GT (M/T) minimum measurement is .35" (9. mm). If less than minimum, replace brushes.