Bleeding the Brakes on a 2017 Honda CBR600RR ABS

Shop parts for a 2017 Honda CBR600RR ABS Motorcycle.

The 2017 Honda CBR600RR ABS uses hydraulic disc brakes at both ends, and the ABS badge tells you this is not a simple old-style system with a mechanical rear drum. The front and rear circuits are separate, so you bleed them independently. A normal caliper-bleeder bleed is generally the right approach for refreshing fluid and removing air from the lines and calipers, but the ABS unit adds one important caveat: if the reservoir has run dry, or if the ABS unit or its lines have been disconnected, air may have entered a part of the system that a home bleed will not clear. In that case, the bike should go to a shop with the appropriate diagnostic equipment.

Why and When the CBR600RR ABS Needs a Brake Bleed

Brake fluid absorbs moisture over time, which lowers its boiling point and makes brake fade more likely under hard or repeated use. Even if the bike feels fine, dark or cloudy fluid in the reservoir is a sign that fresh fluid is overdue. A spongy lever, a lever that pulls closer to the grip than it used to, or a pedal that feels soft are classic symptoms of air in the hydraulic system. Bleeding is also necessary after any work that opened the system, such as new brake lines, caliper service, or master cylinder work. On an ABS-equipped CBR600RR, do not ignore a lever that changes feel after the reservoir has been allowed to run low; that can pull air into the ABS unit rather than just the caliper circuit.

Tools and Supplies for the Job

  • Fresh brake fluid of the type marked on the master cylinder reservoir cap, from a sealed container.
  • A box-end wrench that fits the bleeder valve snugly.
  • A length of clear tubing that fits tightly over the bleeder nipple.
  • A catch bottle for used fluid.
  • Rags or shop towels, plus a syringe or turkey baster for removing old fluid from the reservoir.
  • A screwdriver or driver that fits the reservoir cap screws.
  • Optional: a one-way check-valve bleeder or vacuum bleeder, which can make a one-person job easier.

Preparing the Bike and Protecting Surfaces

Support the CBR600RR ABS securely upright on a stand so it cannot tip while you are working. Turn the handlebars so the front reservoir sits level before you open it. Cover the painted bodywork, the plastic around the reservoir, and the instrument area with rags, because most brake fluids damage paint and plastic on contact. If a spill happens, wipe it up immediately and rinse the area with water. Keep the reservoir cap and diaphragm clean and set them aside where they will not pick up grit. Work in a well-ventilated area, and keep used fluid away from children and pets.

Bleeding the Front Brake Circuit

  1. Open the front reservoir and use the syringe or turkey baster to remove most of the old fluid. Do not let the reservoir run dry while you are removing fluid.
  2. Refill the reservoir with fresh fluid from the sealed container, leaving enough air space for the diaphragm and cap to seat correctly.
  3. Fit the clear tubing over the front caliper bleeder and route the other end into the catch bottle. The tubing should be snug so air cannot leak in around the nipple.
  4. Squeeze the front lever slowly and hold it against the grip. Keep steady pressure on it.
  5. Open the bleeder about a quarter turn with the box-end wrench. Fluid and any trapped air will move through the tubing.
  6. Close the bleeder before you release the lever. Releasing the lever with the bleeder open can draw air back into the caliper.
  7. Release the lever, then repeat the squeeze-hold-open-close sequence. Keep checking the reservoir and top it off before it gets low.
  8. Continue until the fluid coming through the tubing is fresh, clean, and free of bubbles. Bleed the front calipers one at a time; if the hose routing makes one caliper farther from the master cylinder, start there, then finish the other.
  9. When the front circuit is done, close the bleeder snugly without overtightening it, and top the reservoir to the correct level marking.

Bleeding the Rear Brake Circuit

  1. Locate the rear reservoir and open it carefully. Remove most of the old fluid without letting the reservoir run dry.
  2. Refill with fresh fluid of the type marked on the cap.
  3. Attach the clear tubing to the rear caliper bleeder and place the other end in the catch bottle.
  4. Press and hold the rear brake pedal, then open the bleeder about a quarter turn.
  5. Close the bleeder before releasing the pedal. Repeat the press-hold-open-close sequence until the fluid is clean and bubble-free, topping off the reservoir as you go.
  6. Finish by closing the bleeder snugly without overtightening and filling the reservoir to the correct level.

Finishing Up and Checking for Leaks

Reinstall the reservoir diaphragm and cap on both circuits. Wipe up any spilled fluid and rinse the area with water if fluid touched paint or plastic. Check the bleeder valves and the banjo fittings at the master cylinder and calipers for weeping or wetness. A dry fitting after several firm lever or pedal applications is what you want to see. Make sure the reservoir is at the correct level marking, and confirm that the cap and diaphragm are seated squarely so fluid cannot escape under pressure.

Testing Before You Ride

The front lever and rear pedal should feel firm and consistent, not spongy, and they should not slowly sink while you hold steady pressure. Spin each wheel to confirm the brakes are not dragging. Test the brakes at low speed in a safe area before riding normally. If the lever or pedal feels different from one pull to the next, or if either one firms up only after pumping, there is still air in the system and the bike is not ready for normal riding.

Troubleshooting and When to Take It to a Shop

If the lever will not firm up after several careful bleeding attempts, stop and look for a leak at the master cylinder, calipers, or fittings. Persistent bubbles can mean the bleeder is being opened too far, the tubing is not sealing, or the reservoir is being allowed to run low. A lever that firms up only after pumping points to air still trapped somewhere. On this ABS-equipped CBR600RR, any situation where air may have entered the ABS unit—such as a reservoir that ran dry or disconnected ABS lines—is a shop job, because a standard caliper bleed may not clear it. The same applies if you are not confident in the result; brakes are not the place to guess.

Related Shopping Categories

Shop Brake Fluid for a 2017 Honda CBR600RR ABS Motorcycle.

Shop Brake Lines for a 2017 Honda CBR600RR ABS Motorcycle.

Shop Brake Pads for a 2017 Honda CBR600RR ABS Motorcycle.

Shop Stands for a 2017 Honda CBR600RR ABS Motorcycle.

Shop Brake Tools for a 2017 Honda CBR600RR ABS Motorcycle.

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.