Honda CRF50F 2004-2015 Service Manual page 189

Connect the brake rod to the pedal with the joint pin
and secure
it
with a new cotter pin.
Install the spring onto the brake rod and the joint
pin into the brake arm.
Install the rod to the joint pin with the adjusting nut.
Adjust the brake pedal free play (page 3-16).
REAR WHEEL/BRAKE/SUSPENSION
13-17