2004-2005 660 Yamaha Rhino Factory Service Manual, Page 18Get this manual
FEATURES FEATURES
GEN INFO
SELF-ADJUSTING PARKING BRAKE MECHANISM Usually, for vehicles equipped with parking brake that must be adjusted manually, it is necessary to adjust the adjusting bolt to achieve the proper clearance between the brake caliper piston and the adjusting boltThis adjustment procedure is unnecessary for vehicles equipped with self-adjusting parking brake mechanismThe proper clearance is automatically maintained at all times, ensuring stable braking performance when parking the vehicle