2004-2005 660 Yamaha Rhino Factory Service Manual, Page 307Get this manual
FRONT AND REAR BRAKES
1Measure: brake pad wear limit Out of specification Replace the brake pads as setBrake pad wear limit 1.5 mm (0.06 in)
2Install: brake pads brake pad spring NOTE: Always install new brake pads, new brake pad shims, new insulators, and new brake pad spring as setMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM