Bleeding the Brakes on a 2017 Honda CB500F
Shop parts for a 2017 Honda CB500F Motorcycle.
The 2017 Honda CB500F uses hydraulic disc brakes at both ends, so the front lever and the rear pedal each act on a fluid-filled system that can be bled at home with basic tools. If your CB500F is ABS-equipped, the normal service bleed is still done through the caliper bleeder valves, but air trapped inside the ABS unit itself is a different matter and may require a shop-level procedure. This guide walks through a front and rear bleed on the CB500F, with the care and checks that a safety-critical system deserves.
Why and When the CB500F Needs a Brake Bleed
Bleeding does two jobs: it removes air that makes the lever or pedal feel soft, and it replaces old fluid with fresh fluid. A spongy front lever, a lever that pulls closer to the grip than it used to, a rear pedal that feels vague, or dark and cloudy fluid in either reservoir are all signs that service is due. The same applies after any work that opened the hydraulic system, such as new brake lines, caliper service, or master cylinder work.
Brake fluid absorbs moisture over time, which lowers its boiling point and can contribute to brake fade under hard or repeated use. That is why many riders refresh the fluid on a regular schedule even when the brakes still feel normal. On the CB500F, treat the front and rear systems as separate jobs with separate reservoirs, and use fresh fluid of the type marked on the master cylinder reservoir cap, from a sealed container.
Tools and Supplies to Have Ready
- Fresh brake fluid of the type marked on the reservoir cap, from a sealed container
- A box-end wrench that fits the bleeder valve
- Clear tubing that fits snugly over the bleeder valve
- A catch bottle for the old fluid
- Rags or shop towels, plus a syringe or turkey baster for removing old reservoir fluid
- A screwdriver or driver that fits the reservoir cap screws
- Optional: a one-way check-valve bleeder or vacuum bleeder to make one-person bleeding easier
Preparation and Paint Protection
Support the bike securely upright on a stand so the reservoirs sit level. For the front, turn the handlebars until the front master cylinder reservoir is level before removing the cap. Cover painted surfaces, plastics, 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 where they will not pick up grit.
Step-by-Step Bleeding Procedure
- Open the reservoir for the system you are bleeding and use a syringe or turkey baster to remove most of the old fluid. Do not let the reservoir run dry.
- Refill the reservoir with fresh fluid of the type marked on the cap, leaving room for the diaphragm and cap later.
- Attach the clear tubing to the caliper bleeder valve and route the other end into the catch bottle.
- For the front, squeeze and hold the lever. For the rear, press and hold the pedal. Keep steady pressure on it.
- Open the bleeder about a quarter turn and let fluid and air flow out through the tube.
- Close the bleeder before releasing the lever or pedal. Releasing with the bleeder open can draw air back into the system.
- Release the lever or pedal, then repeat the squeeze-hold-open-close-release sequence.
- Keep topping off the reservoir throughout the job so it never runs low enough to draw air in.
- Continue until fresh, clean, bubble-free fluid comes through the tube. Check the reservoir level often.
- If your bike has more than one front caliper, bleed each one in turn. As a general rule, begin with the caliper farthest from its master cylinder; if there is only one front caliper, that is the one you bleed.
- Repeat the same process at the rear caliper using the rear pedal and rear reservoir.
- When the fluid runs clean at each bleeder, close the bleeder snugly without overtightening.
Finishing Up and Checking for Leaks
Fill each reservoir to the correct level marking, reinstall the diaphragm and cap, and clean any spilled fluid from the bike. Check the bleeder valves and the banjo fittings at the master cylinder and caliper for weeping or wetness. A dry fitting after several firm lever or pedal applications is what you want to see. If fluid appears at a fitting, stop and correct it before riding.
Testing Before You Ride
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. Test the brakes at low speed in a safe area before riding normally. If the lever or pedal still feels soft, or if it firms up only after pumping, there is likely still air in the system and the bleed should be repeated.
Troubleshooting and When to Visit a Shop
A lever that will not firm up after several bleeding attempts, persistent air bubbles, fluid leaking from the master cylinder or caliper, or a brake that drags after the job are reasons to stop and diagnose further. If the reservoir ran dry, or if the ABS unit or its lines were disconnected, air may have entered the ABS unit itself. In that case, the CB500F should go to a shop with the appropriate procedure or diagnostic tool rather than being bled further at home. A firm, leak-free system with clean fluid at both ends is the sign that the job is complete.
Related Shopping Categories
Shop Brake Fluid for a 2017 Honda CB500F Motorcycle.
Shop Brake Lines for a 2017 Honda CB500F Motorcycle.
Shop Brake Pads for a 2017 Honda CB500F Motorcycle.
Shop Stands for a 2017 Honda CB500F Motorcycle.
Shop Brake Tools for a 2017 Honda CB500F 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.
