Honda TRX500FA 2006 Owner's Manual page 195

Brakes
Rear Brake Pedal Freeplay
RIGHT SIDE
(1) rear brake pedal
Inspection
Measure the distance the rear brake pedal ( ) moves before the brake
starts to take hold. Freeplay, measurement at the tip of the end of the
pedal, should be:
9/16 13/16 in (15 20 mm)
If necessary, adjust to the specified range.
Servicing Your Honda
186
(1)
9/16 13/16 in
(15 20 mm)
1