How to Bleed and Replace Brake Fluid on a 2021 Can-Am Renegade 570

Shop parts for a 2021 Can-Am Renegade 570 ATV.

This MotoSport guide walks you through safely flushing and bleeding the hydraulic brake system on a 2021 Can-Am Renegade 570 (MMY: CAN_AM;REN570;2021). Follow these steps carefully, use the recommended supplies, and observe model-specific notes at the end.

Tools & supplies

  • Dot 4 brake fluid (OEM specification; avoid DOT 5 silicone)
  • Clear flexible bleed tubing (fits caliper bleed nipple)
  • 5-10 ml syringe or vacuum pump bleeder
  • Wrenches for bleed nipples (typically 8mm or 10mm)
  • Clean rags, shop towels, nitrile gloves
  • Brake-safe catch container
  • Torque wrench for caliper hardware (see torque specs below)
  • Jack or lift and stands to secure ATV

Safety & preparation

  • Work in a well-ventilated area; avoid skin/paint contact with brake fluid.
  • Park ATV on level surface, engage parking brake, disconnect battery if performing extended service.
  • Ensure master cylinder reservoir is clean; remove dirt from cap before opening to prevent contamination.
  • Use eye protection and gloves. Dispose of used fluid per local regulations.

Overview of the Renegade 570 brake system

The 2021 Renegade 570 uses hydraulic disc brakes with a front master cylinder and a rear master cylinder for the foot brake (depending on trim). Bleeding order: farthest caliper from the master cylinder first, then the nearest. For single master cylinder systems bleed the calipers in sequence: right front, left front, rear; confirm your unit's plumbing visually before starting.

Step-by-step: Reservoir prep

  1. Clean around the reservoir cap. Remove cap and diaphragm; plug the reservoir with clean plastic wrap or a rag to minimize contamination.
  2. Top reservoir with fresh DOT 4 fluid until near maximum mark. Do not overfill.

Step-by-step: Manual syringe method (recommended for control)

  1. Place ATV on stands; remove wheels if needed to access calipers.
  2. Start with the caliper farthest from the master cylinder. Fit clear tubing over the bleed nipple and place the other end into a catch container partially filled with used fluid to prevent air re-entry.
  3. Loosen the bleed nipple one quarter turn to prepare; do not open fully yet.
  4. Use the syringe to draw fluid from the reservoir or push new fluid through the system (pushing from reservoir through lines is preferred for complete flush). If using push method, attach syringe to reservoir and gently push fresh fluid while an assistant slowly operates the brake lever/pedal to cycle fluid out of caliper through tubing. If using pull method, attach syringe at the caliper bleed nipple and draw while another cycles the lever/pedal.
  5. Open the bleed nipple while cycling until clear, bubble-free fluid flows. Close nipple while pressure is off the lever/pedal to avoid sucking air back in.
  6. Top off reservoir frequently to prevent it running dry; maintain a steady supply of fresh fluid.
  7. Repeat for each caliper in the correct sequence. After the final caliper, pump the brake lever/pedal to check firmness; if spongy, repeat bleeding sequence.

Step-by-step: Vacuum or pressure bleeder method

  1. Attach vacuum pump to bleed nipple and pull while an assistant cycles the lever/pedal. Maintain reservoir level.
  2. Or use a pressurized reservoir bleeder kit set to low pressure (2-5 psi) feeding fresh DOT 4 into master cylinder while opening bleed nipples in sequence until fluid runs clear and air-free.

Final checks and assembly

  • Tighten bleed nipples to spec (light torque; typically 7-10 Nm). Avoid over-torquing.
  • Refill reservoir to proper level, reinstall diaphragm and cap, and clean any spilled fluid immediately.
  • Reinstall wheels and torque wheel nuts to factory spec.
  • Test brakes at low speed in a safe area to confirm firm pedal/lever feel and no dragging calipers.
  • Check for leaks after a short ride and re-torque bleed nipples if necessary.

Bleed sequence examples

  • If the master cylinder is located front-left: bleed right rear – left rear – right front – left front.
  • When in doubt, bleed the furthest caliper first and finish with the caliper closest to the master cylinder.

Model-specific notes for the 2021 Can-Am Renegade 570 (MMY details)

  • OEM fluid type: DOT 4 is recommended by Can-Am. Do not mix DOT 5 silicone with DOT 4.
  • The Renegade 570 uses ABS on some trims – if your machine has ABS, consult the owner’s manual for ABS bleeding procedure or use a diagnostic tool to cycle the ABS pump as required. Improper ABS handling can trap air in the modulator.
  • Some 2021 units feature a combined master cylinder layout; verify whether front and rear share a reservoir. If shared, maintain reservoir level carefully and follow the correct caliper order to avoid introducing air into the shared circuit.
  • Brake calipers on the Renegade 570 are accessible but may require partial removal of plastics for best access. Keep fasteners and torque values to factory specs when reinstalling.
  • After bleeding, the electronic parking brake (if equipped) should be checked for proper engagement. Reset procedures may be required after hydraulic work; consult your service manual or MotoSport tech if uncertain.
  • Corrosion protection: if you operate in salt or wet environments, inspect hoses and fittings for wear and corrosion; replace any suspect lines with OEM or high-quality replacements from MotoSport to maintain reliability.

Troubleshooting

  • Persistent spongy lever: re-bleed entire system; ensure reservoir never ran dry. Consider replacing old flexible hoses if they swell internally.
  • Brake dragging after bleed: check caliper pistons for frozen movement and rotor alignment; ensure caliper bolts torqued correctly and guide pins lubricated.
  • Visible fluid leak: stop riding, identify source, tighten/replace components, and re-bleed after repair.

Maintenance tips

  • Brake fluid absorbs moisture over time; replace every 1-2 years depending on use and environment.
  • Keep a maintenance log noting fluid type, date, and mileage/hours so future replacements stay consistent.
  • Always use fresh, unopened DOT 4 fluid from an intact container.

If you’d like model-specific replacement parts or brake service kits for the 2021 Can-Am Renegade 570, find parts and consumables at the MotoSport parts page linked above.

Related Shopping Categories

Shop Brake Fluid for a 2021 Can-Am Renegade 570 ATV.

Shop Brake Bleeders for a 2021 Can-Am Renegade 570 ATV.

Shop Brake Pads for a 2021 Can-Am Renegade 570 ATV.

Shop Brake Lines for a 2021 Can-Am Renegade 570 ATV.

Shop Brake Tools for a 2021 Can-Am Renegade 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.