1987-2006 Suzuki ATV LT80 Service Manual, Page 104Get this manual
ELECTRICAL SYSTEM
CARBON BRUSHES When the brushes are worn, the motor will be unable to produce sufficient torque, and the engine will be difficult to turn overTo prevent this, periodically, inspect the length of the brushl?S, replacing them when they are too short or chippingService limit 6.0 mm (0.24 in)