How to Bleed & Replace Brake Fluid on a 2020 CFMOTO CFORCE 600

Shop parts for a 2020 CFMOTO CFORCE 600 ATV.

This MotoSport proprietary guide walks you through safely replacing brake fluid and bleeding the hydraulic brakes on a 2020 CFMOTO CFORCE 600 ATV (MMY). Follow every step carefully, use appropriate PPE, and work on a cool, level machine.

What you’ll need

  • DOT 4 brake fluid (fresh, unopened)
  • Clear vinyl hose and a clean catch bottle
  • Wrenches or a flare nut wrench sized for bleed nipple
  • Screwdrivers, pliers, shop rags, brake parts cleaner
  • Rubber gloves & eye protection
  • Brake bleeder wrench or box wrench and a helper (if not using a vacuum or pressure bleeder)
  • New banjo crush washers (recommended when removing banjo bolts)

Pre-bleed inspection & safety

  • Park the ATV on a level surface, set the parking brake, and disconnect the negative battery terminal when working near electrical components.
  • Inspect brake lines, hoses, banjo bolts, calipers, and master cylinders for leaks, cracks, corrosion, or swollen hoses. Replace damaged parts before bleeding.
  • Confirm the 2020 CFORCE 600 does not have wheel ABS hardware on the model in question; if ABS is present consult the factory service manual for ABS-specific bleed procedures.
  • Keep brake fluid off painted surfaces – it damages paint. Clean spills immediately with brake cleaner and rags.

Master cylinder reservoir locations

  • Front brake reservoir is typically on the right handlebar master cylinder.
  • Rear brake reservoir is located on the frame near the brake pedal/master cylinder assembly.

Drain & replace all brake fluid (complete fluid change)

  1. Remove the reservoir caps and diaphragms. Cap the reservoirs with clean shop towels to keep contaminants out while not siphoning yet.
  2. Siphon as much old fluid as possible from each reservoir using a hand pump or turkey baster. Dispose of old fluid per local regulations.
  3. Top reservoirs with fresh DOT 4 fluid to the recommended level. Do not mix fluid types.
  4. If you plan a full fluid change, bleed each circuit until clear fluid free of bubbles and discoloration appears at the bleed nipple.

Bleeding procedure

Use the following sequence for a thorough bleed: rear brake first, then right front, then left front. If you have a single rear caliper, bleed that. This sequence helps move air out toward the master cylinder.

  1. Attach clear vinyl hose to the bleed nipple at the caliper and submerge the other end in a catch bottle partially filled with old fluid to prevent air re-entry.
  2. Have an assistant slowly depress the brake pedal (or lever for front) several times and hold it down.
  3. Open the bleed nipple about 1/4 turn to let fluid and bubbles flow into the hose. Close the nipple before the assistant releases the pedal. Repeat until no bubbles appear and fluid runs clear.
  4. Keep the reservoir topped up during the process to avoid drawing air into the master cylinder. Never let reservoir level drop below the minimum mark.
  5. Work from the furthest caliper from the master cylinder to the nearest – rear then right front then left front. For dual rear hydraulic setups, follow rear-right then rear-left as applicable.
  6. Tighten bleed nipples securely when finished. Clean any residual fluid off components.

Optional methods

  • Vacuum bleeder – attach to bleed nipple and pull until clear fluid appears; maintain reservoir level.
  • Pressure bleeder – pressurize the reservoir and open each bleed nipple in sequence for a single-operator, faster bleed.
  • Reverse or pressure back-bleeding is not recommended unless specified by manufacturer; forward-flow bleeding is safest for most systems.

Reassembly & final checks

  • Refill reservoirs to correct level and install diaphragms & caps.
  • Pump the brake lever and pedal until firm resistance is felt. If the lever or pedal remains spongy, repeat bleeding until solid feel is achieved.
  • Inspect all banjo bolts, fittings, and bleed nipples for leaks at operating pressure; tighten if necessary but do not overtighten.
  • Clean all tools and surfaces of brake fluid. Dispose of used fluid responsibly.
  • Road test cautiously at low speed in a safe area to confirm braking performance. Re-check fluid level and for leaks after the test ride.

Model-specific notes for the 2020 CFMOTO CFORCE 600

  • The CFORCE 600 uses DOT 4 brake fluid; always use high-quality fluid and avoid contamination with DOT 3/5 unless multi-spec is explicitly approved.
  • The 2020 CFORCE 600 may have composite reservoir housings and plastic caps – handle them carefully to avoid cracking.
  • CFMOTO routing and bracketry can be compact; ensure hoses are routed correctly and not twisted when reinstalling components.
  • Replace crush washers on banjo bolts if you remove them — they are inexpensive and prevent leaks.
  • If the model has aftermarket accessories or luggage racks, verify lines and cables haven’t been pinched or rerouted under stress; aftermarket changes can introduce brake line wear points.
  • If brakes require frequent topping up, inspect master cylinder seals, caliper pistons, and brake lines for leaks or internal fluid migration past seals.

Troubleshooting

  • Persistent spongy lever after bleeding – suspect trapped air in master cylinder, a leak, or contaminated/caliper piston hang-up. Re-bleed, inspect components, replace faulty parts.
  • Brake fade after repeated stops – check fluid contamination or overheating; replace fluid and inspect pads/rotors.
  • Visible leaks – do not ride until leak source is repaired.

Maintenance schedule recommendation

For dependable performance, replace brake fluid every 2 years or sooner if the machine sees heavy use or water contamination is suspected. Inspect lines and components at each service interval.

Related Shopping Categories

Shop Brake Fluid for a 2020 CFMOTO CFORCE 600 ATV.

Shop Brake Bleeders for a 2020 CFMOTO CFORCE 600 ATV.

Shop Brake Pads for a 2020 CFMOTO CFORCE 600 ATV.

Shop Brake Lines for a 2020 CFMOTO CFORCE 600 ATV.

Shop Brake Tools for a 2020 CFMOTO CFORCE 600 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.