Honda FourTrax Foreman TRX500FM2 2018 Owner's Manual page 193

Draining Water from Brakes
Refer to Safety Precautions on page 115.
RIGHT REAR
(2)
(1)
(1) rear brake drain bolt
1. Make sure the engine is OFF and the parking brake is set.
2. Remove the rear brake drain bolt (1) and sealing washer (2) from
the bottom of the rear brake panel.
If any water drains, the brake seals must be replaced by your
dealer as soon as possible.
3. Install the rear brake drain bolt with a new sealing washer and
tighten it to the specified torque:
12 N·m (1.2 kgf·m, 9 lbf·ft)
(2) sealing washer
Servicing Your Honda
Brakes
183