Polaris Sportsman 400 Service Manual page 328

REAR CALIPER REMOVAL/INSPECTION
1. Clean caliper area before removal.
2. Using a flare nut wrench, remove hand brake (inner) and
auxiliary brake (outer) lines. Place a container to catch
brake fluid draining from brake lines.
3. Remove caliper.
4. Remove brake pad retaining pin pads, and pad spacer.
NOTE: This is a spring pin. Do not spread apart farther than
necessary to remove it.
5. Remove Allen head screw and separate caliper halves
and remove pistons with piston pliers.
6. Remove O-rings and clean O-ring grooves.
7. Clean disc, caliper body, and pistons with brake cleaner
or alcohol.
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BRAKES
9.25