Important: Do not operate the park brake lever while the rotor is removed.
- Remove the rear tires and wheels. Refer to 
Tire and Wheel Removal and Installation 
in Tires and Wheels.
 
- Disconnect the rear cable from the brake shoe lever.
 
- Pull on the lever until there is a firm stop. Release the lever
and measure free lever travel at the cable interface. If the travel is less
  than 10 mm, adjustment is complete. If the travel is more than 10 mm,
further adjust brake shoe.
 
- Remove the brake rotor. Refer to 
Brake Rotor Replacement 
in Disc Brakes.
 
- Rotate the adjustment nut with a screwdriver in order to extend
the slotted tappet in order to increase the gap between the adjuster nut and
  the screw by .38 mm.
 
- Install the rotor onto
the axle mounting flange.
 
Ensure that the rotor is flush against the flange. Use two hand-tightened
lugnuts (1) in order to keep the rotor (2) in position.
- Measure the lever (free) travel per step 2. Repeat the
adjuster in order to obtain the ideal 3-8 mm free travel of the
  brake shoe lever.
 
- Check the rotor for drag. The rotor must rotate freely within
the stud hole clearance.
 
- Install rear tires and wheels. Refer to 
Tire and Wheel Removal and Installation 
in Tires and Wheels.