Bleeding the Brakes on a 2017 Ducati Scrambler Cafe Racer
Shop parts for a 2017 Ducati Scrambler Cafe Racer Motorcycle.The 2017 Ducati Scrambler Cafe Racer uses hydraulic disc brakes at both ends and is equipped with ABS. The front lever and rear pedal operate separate hydraulic circuits, so each side needs its own bleed when the fluid is due or when the system has been opened. Routine bleeding at the calipers is the normal way to refresh fluid and push air out of the lines. The ABS unit adds one important limit: if the reservoir has run dry, or the ABS unit or its lines have been disconnected, air may be trapped where a simple caliper bleed cannot reach it. In that case, the bike should go to a shop with the appropriate diagnostic equipment rather than being forced through a home bleed.
When a Brake Bleed Is Due
A spongy or soft lever, a pedal that feels longer or less positive than it used to, or a lever that pulls closer to the grip are classic signs that air or old fluid is affecting the system. Dark or cloudy fluid in the reservoir is another reason to act. Bleeding is also due after any work that opened the hydraulic system, such as new brake lines, caliper service, or master cylinder work. Even without symptoms, brake fluid absorbs moisture over time. That moisture lowers the fluid’s boiling point and can contribute to brake fade under hard use, so many riders refresh the fluid on a regular schedule. On the 2017 Cafe Racer, treat the front and rear as separate jobs and do not assume that bleeding one side has improved the other.
Tools and Supplies to Gather
- 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
- A length of clear tubing that fits snugly over the bleeder
- A catch bottle for the old fluid
- Rags or shop towels
- A syringe or turkey baster for removing old fluid from the reservoir
- A screwdriver or driver that fits the reservoir cap screws
A one-way check-valve bleeder or a vacuum bleeder can make the job easier when working alone, but the basic lever-and-bleeder method works with a helper or with careful one-person technique. Keep the fluid container closed when not pouring, and do not reuse fluid that has been through the system.
Preparation and Paint Protection
Support the 2017 Ducati Scrambler Cafe Racer securely upright on a stand so it cannot tip while you are working the lever or pedal. For the front circuit, turn the handlebars so the front reservoir sits level before you open it. Cover painted surfaces, plastic panels, and the instrument area with rags, because most brake fluids damage paint and plastic on contact. Clean around the reservoir cap before removing it so dirt does not fall into the fluid. If a spill happens, wipe it up immediately and rinse the area with water. Throughout the job, watch the reservoir level closely; letting it run dry is the fastest way to pull air into the system and turn a simple bleed into a much longer job.
Bleeding the Front Brake
- With the bike stable and the front reservoir level, remove the cap and diaphragm. Use the syringe or turkey baster to remove most of the old fluid from the reservoir, but leave enough that the master cylinder does not draw air. Refill with fresh fluid to the level marking.
- Fit the box-end wrench over the front bleeder valve you are working on, then push the clear tubing onto the bleeder and route the other end into the catch bottle. Keep the tubing clear of painted parts.
- Squeeze the front lever several times and hold it firmly. Open the bleeder about a quarter turn and watch the tubing. Close the bleeder before you release the lever. Releasing the lever with the bleeder open can draw air back into the caliper.
- Check the reservoir and top it off. Repeat the squeeze, hold, open, close, and release sequence. Continue until the fluid coming through the tube is clean and free of bubbles. Do not let the reservoir run low at any point.
- If your bike has a second front caliper, treat it as its own bleed point and repeat the same steps. As a general practice, start with the caliper farthest from the master cylinder. Finish by closing the bleeder snugly without overtightening it.
Bleeding the Rear Brake
- Locate the rear reservoir and keep it level. Protect the surrounding bodywork and any painted parts, then remove the cap and diaphragm. Remove most of the old fluid and refill with fresh fluid from the sealed container.
- Place the box-end wrench on the rear bleeder valve, attach the clear tubing, and route it into the catch bottle.
- Press the rear pedal several times and hold it down. Open the bleeder about a quarter turn, watch for fluid and air, then close the bleeder before releasing the pedal. Repeat this cycle while topping off the reservoir.
- Continue until the fluid in the tube is clean and bubble-free. Close the bleeder snugly without overtightening, then check the reservoir level and top it off if needed.
Finishing, Testing, and Troubleshooting
When both circuits are bled, fill each reservoir to the correct level marking, reinstall the diaphragm and cap, and clean any spilled fluid from the bike. Check for leaks at the bleeder valves and at the banjo fittings. The front lever and rear pedal should feel firm and consistent, not spongy, and they should not slowly sink under steady pressure. Spin each wheel to confirm the brakes are not dragging. Before riding normally, test the brakes at low speed in a safe area.
If the lever or pedal will not firm up after several bleeding attempts, if it firms only after pumping, if bubbles keep appearing, or if fluid is leaking from the master cylinder or caliper, stop and diagnose the problem rather than continuing to ride. Any situation where air may have entered the ABS unit—especially a reservoir that ran dry or ABS lines that were disconnected—is a job for a shop. A correct bleed on the 2017 Ducati Scrambler Cafe Racer should leave both controls firm and the fluid clean, with no leaks and no spongy feel.
Related Shopping Categories
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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.
