2005 Polaris Sportsman 400/500 Service Manual, Page 249Get this manual
BRAKES CAUTION: Always use new brake disc mounting boltsThe bolts have pre-applied locking agent which is destroyed upon removal2Push upper pad retainer pin inward and slip brake pads past edge
FRONT CALIPER REMOVAL
CAUTION: Use care when supporting vehicle so that it does not tip or fallSevere injury may occur if machine tips or falls1Using line wrench, loosen and remove brake line to caliperPlace container under caliper to catch fluid draining from brake line