2001 Yamaha YFM660 Raptor Factory Service Manual, Page 299Get this manual
ELECTRIC STARTING SYSTEM
5.Measure: Brush length (each) Out of specification Replace the brushBrush length: 12.5 mm (0.49 in) Wear limit: mm (0.20 in)
ELECTRIC STARTING SYSTEM
5.Measure: Brush length (each) Out of specification Replace the brushBrush length: 12.5 mm (0.49 in) Wear limit: mm (0.20 in)