How to bleed & replace brake fluid on a 2022 Polaris Sportsman 570

Shop parts for a 2022 Polaris Sportsman 570 ATV.

This MotoSport guide shows a practical, safe method to replace and bleed the brake fluid on your 2022 Polaris Sportsman 570. Follow these steps precisely, use clean tools and fresh DOT 4 brake fluid only, and observe all safety precautions.

Safety & prep

  • Work on a level surface with the engine off, key out, and parking brake engaged.
  • Wear safety glasses and nitrile gloves. Brake fluid is corrosive to paint & plastics.
  • Keep rags and a small container to capture old fluid. Dispose of waste fluid per local regulations.
  • Use fresh DOT 4 brake fluid. Do not mix DOT 4 with DOT 5 silicone fluid.
  • Have a brake-bleeder kit (vacuum or pressure), clear tubing, a catch bottle, and a 7-10 mm wrench for bleeder nipples available.

Model notes for the 2022 Polaris Sportsman 570

  • The master cylinder reservoir is on the handlebars; the fluid level and cap are accessible from above. Clean the cap area thoroughly before opening to avoid contamination.
  • This model typically uses a conventional hydraulic system (non-hybrid ABS). If your ATV is equipped with an ABS or electronic brake control option, it may require a factory procedure or scan tool to properly cycle the ABS module; consider dealer service if an ABS-related light or fault exists.
  • Polaris brake hardware uses small bleeder nipples; keep a firm wrench fit to avoid rounding them out.
  • Inspect brake lines, calipers and pads while you're servicing fluid. Replace any hard or cracked hoses and service calipers if leaking.

Tools & supplies

  • DOT 4 brake fluid (fresh)
  • Brake-bleeder kit (vacuum or pressure) or a helper for manual bleeding
  • Clear vinyl tubing and a catch bottle
  • Wrenches for bleeder nipples (typically 8-10 mm)
  • Shop rags, gloves, funnel or syringe, small flat screwdriver

Step-by-step replacement & bleeding

  1. Clean the reservoir cap area. Remove the cap and diaphragm; note the current fluid level and color.
  2. Siphon or suction out most of the old fluid from the reservoir with a syringe. Wipe the inside edge of the reservoir clean. Do not let dirt enter.
  3. Refill the reservoir with fresh DOT 4 fluid to the full mark. Keep the cap loose but installed between steps to reduce contamination.
  4. Identify bleed sequence: always bleed from the caliper farthest from the master cylinder toward the closest. On most Sportsman 570 setups the rear caliper is farthest, fronts are closer. If unsure, follow farthest-to-closest rule rather than fixed wheel order.
  5. Fit clear tubing over the first caliper's bleeder screw and place the other end in a catch bottle partially filled with fresh fluid to prevent air re-entry.
  6. Open the bleeder screw about 1/4 turn. Have a helper slowly depress the brake lever/pedal until it is firm, then hold it. Close the bleeder screw. Release the lever slowly. Repeat until the fluid running into the catch bottle is clean and free of bubbles. Keep the reservoir topped up during the process; never let it run dry.
  7. Repeat for each caliper in sequence (farthest to closest) until all old fluid is purged and the pedal/lever feels firm. For vacuum or pressure bleeders, follow the tool manufacturer's procedure while observing reservoir level.
  8. After final caliper is bled, pump the lever a few times and confirm firmness. Tighten bleeder screws to proper snugness and wipe any spilled fluid from paint or plastic immediately.
  9. Top the reservoir to the correct level, reinstall diaphragm and cap, and clean up. Start the machine and test brake operation at low speed in a safe area. Re-check for leaks and fluid level after a short ride.

Tips & trouble-shooting

  • If the lever remains spongy after bleeding, re-check for leaks, loose fittings, or a collapsed master cylinder seal. Re-bleed and inspect calipers for internal leaks.
  • A small amount of air can hide in caliper pistons; work pistons back slightly when bleeding if necessary to help expel air (use care to avoid pushing fluid out of the system).
  • If a bleeder nipple is rounded or stuck, apply penetrating oil and work carefully to avoid snapping it off; replace if damaged.
  • If your Sportsman shows any brake system fault, ABS lamp, or unusual behavior, stop and consult a Polaris technicianABS units can require specific cycling procedures or scan-tool commands.
  • Always inspect pads and rotors when changing fluid; contaminated pads should be replaced.

Final checks

  • Confirm no leaks at calipers, lines, master cylinder or fittings.
  • Verify brake lever/pedal firmness cold and after a short ride.
  • Dispose of old fluid responsibly. Record the service date and fluid type for maintenance history.

Performing a full fluid change and careful bleed keeps your Sportsman 570 stopping reliably. If you prefer a professional-level job or have ABS, consider MotoSport service partners or Polaris dealers for advanced diagnostics.

Related Shopping Categories

Shop Brake Fluid for a 2022 Polaris Sportsman 570 ATV.

Shop Brake Bleeders for a 2022 Polaris Sportsman 570 ATV.

Shop Brake Pads for a 2022 Polaris Sportsman 570 ATV.

Shop Brake Lines for a 2022 Polaris Sportsman 570 ATV.

Shop Brake Tools for a 2022 Polaris Sportsman 570 ATV.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.