How to bleed and replace brake fluid on a 2022 Can-Am Renegade 850

Shop parts for a 2022 Can-Am Renegade 850 ATV.

This MotoSport guide covers a full brake fluid change and bleeding procedure tailored for the 2022 Can-Am Renegade 850 (MMY CAN_AM;REN850;2022). Follow safe shop practices, use quality tools and fluids, and perform the job in a well-ventilated, level workspace. If you are not comfortable with hydraulic systems, consider professional service.

What you will need

  • DOT 4 brake fluid (fresh, unopened bottle) – do not mix with mineral oil or other brake fluid types
  • Clear plastic tubing sized to bleed nipples
  • Small catch bottle or jar and disposable rags
  • Brake bleeder wrench or correctly sized open-end wrench
  • Fluid transfer syringe, hand vacuum pump, or pressure bleeder (optional but speeds the job)
  • Gloves, eye protection, and a brake-clean spray
  • Jack or ramps and straps to safely support the ATV if you need wheel removal

Special notes about the 2022 Renegade 850

  • The Renegade 850 uses conventional hydraulic disc brakes with separate master cylinders for front and rear circuits. Front master is on the handlebars; rear master is near the brake pedal area. Each circuit should be treated independently when bleeding.
  • Brake fluid is hygroscopic and degrades braking performance over time. MotoSport recommends replacing brake fluid every 1–2 years or sooner if moisture or contamination is suspected, and immediately after any work that opens the system.
  • Take care around painted and plastic surfaces — brake fluid will damage finishes. Protect panels with shop towels and clean spills with brake cleaner immediately.
  • ABS/GCU note: If your Renegade is equipped with ABS or advanced braking electronics, do not open electrical connectors or attempt system resets beyond the standard bleed. If an ABS fault appears after bleeding, consult a dealer or qualified technician.

Prep steps

  1. Park on level ground, set parking brake, and remove the key. Block the wheels for safety.
  2. Remove any body panels or storage covers necessary to access both master cylinder reservoirs and bleed nipples on the calipers. Keep reservoirs clean and free of dirt.
  3. Clean the tops of the master reservoirs with brake cleaner. Remove reservoir caps and diaphragms, taking care not to let dirt fall inside.
  4. Inspect lines and fittings for leaks, cracks, or damage. Replace any suspect components before bleeding.

MotoSport step-by-step bleed & fluid replacement

General rule: bleed the caliper farthest from its master cylinder first, then the next farthest, finishing with the closest caliper. For each circuit (front and rear) complete a full fluid exchange from the master reservoir to the calipers.

1. Front brake circuit (handlebar master cylinder)

  1. Locate the front master reservoir on the handlebar. Top up with fresh DOT 4 so the fluid level is near the full mark but not overflowing.
  2. Identify the two front calipers and determine which caliper is farthest from the master cylinder (left or right depending on routing). Attach clear tubing to the farthest caliper bleed nipple and submerge the other end into a catch jar half-filled with clean brake fluid to avoid drawing air back into the line.
  3. Crack the farthest bleed nipple about a quarter turn. Have an assistant slowly squeeze the front brake lever several times then hold it compressed. Open the bleed nipple to allow fluid and bubbles to flow into the jar, then close the nipple before the lever is released. Repeat until clear, bubble-free fluid appears.
  4. Move to the next caliper and repeat the same squeeze-hold-open-close procedure until the fluid runs clear and free of air. Keep the reservoir topped up between cycles to prevent drawing air into the master.
  5. Once both front calipers show clear, bubble-free fluid and the brake lever feels firm, tighten bleed nipples snugly, wipe fittings clean, reinstall reservoir diaphragm and cap, and test lever firmness with the engine off.

2. Rear brake circuit (rear master cylinder)

  1. Access the rear master cylinder area and top the reservoir with fresh DOT 4.
  2. Identify the rear caliper(s) and determine the farthest caliper from the rear master. Attach tubing and a catch jar as above.
  3. Follow the same squeeze-hold-open-close bleeding routine using the brake pedal for rear bleeding. Keep the reservoir topped up and repeat until fluid is clear and pedal feel is firm.
  4. When finished, snug bleed nipples, clean up, and reinstall reservoir cap and diaphragm.

3. Full-system flush (recommended)

If you are replacing old fluid, perform the above procedure until the fluid emerging at each caliper matches the new DOT 4 in clarity and color. For stubborn contamination or degraded fluid, a pressure bleeder or vacuum tool speeds full exchange.

Use of tools and alternative methods

  • Vacuum bleeder: attaches to bleed nipple and draws fluid out while you pump the lever/pedal slowly. Good for solo operators.
  • Pressure bleeder: pressurizes the master reservoir and forces new fluid through the system – fastest and cleanest way to fully exchange fluid.
  • Gravity bleed: only for very light flushing and not recommended for complete exchanges, as it is slow and riskier for air entrapment.

Final checks & road test

  • Confirm all bleed nipples and reservoir caps are tight and clean. Remove any spilled fluid from painted surfaces immediately.
  • Verify lever and pedal feel – both should be firm with minimal travel. If sponginess remains, repeat the bleeding sequence.
  • Lower the ATV, remove stands, and perform a low-speed test ride in a safe area to verify braking performance. Re-inspect fittings for leaks after the test.
  • Dispose of used brake fluid according to local hazardous waste regulations.

Troubleshooting

  • Persistent soft brake lever/pedal: likely trapped air or contaminated master cylinder. Repeat bleeding, check master cylinder piston for corrosion, and inspect hoses for internal collapse.
  • Brake drag after bleeding: check caliper pistons for proper retraction and ensure bleed nipple caps are installed. Clean pads and rotors if fluid contamination occurred.
  • ABS light or faults: cycle power and recheck connectors; if faults persist, a diagnostic scan by a dealer may be required.

Performing a clean, complete brake fluid change and bleed on your 2022 Can-Am Renegade 850 improves safety and lever feel. Keep records of fluid change intervals and inspect brake components regularly for wear.

Related Shopping Categories

Shop Brake Fluid for a 2022 Can-Am Renegade 850 ATV.

Shop Brake Bleeders for a 2022 Can-Am Renegade 850 ATV.

Shop Brake Pads for a 2022 Can-Am Renegade 850 ATV.

Shop Brake Lines for a 2022 Can-Am Renegade 850 ATV.

Shop Brake Tools for a 2022 Can-Am Renegade 850 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.