How to Bleed the Brakes on a 2009 Yamaha FZ6
Shop parts for a 2009 Yamaha FZ6 Motorcycle.Understanding the Setup
The 2009 Yamaha FZ6 has hydraulic disc brakes front and rear and no ABS. The front brake circuit runs from the master cylinder and reservoir on the right handlebar to the front caliper bleeders. The rear brake circuit runs from a master cylinder operated by the foot pedal, with its own reservoir, to the rear caliper bleeder. Each circuit is independent and bled on its own.
When to Bleed
Brake fluid absorbs moisture over time, which lowers its boiling point and can lead to brake fade under hard use. The FZ6 rewards a quick pace, and repeated hard stops heat the brakes. On a bike of this age, moisture-laden fluid can also contribute to corrosion inside the calipers and master cylinders. Many riders refresh the fluid on a regular schedule for both reasons.
Other reasons to bleed:
- The lever feels spongy or pulls closer to the grip than it used to
- The rear pedal feels soft or sinks
- The fluid in a reservoir has turned dark or cloudy
- You have replaced brake lines, serviced a caliper, or worked on a master cylinder
Tools and Supplies
- 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
- A catch bottle
- A syringe or turkey baster
- A screwdriver or driver for the reservoir caps
- Rags or shop towels
- Optional: a one-way check-valve bleeder or vacuum bleeder for solo work
Prep Work
Support the bike securely upright on its center stand or a paddock stand. Turn the handlebars until the front reservoir is level. Cover the tank, fairing, and dash with rags. Most brake fluids damage paint and plastic on contact; wipe up any spill immediately and rinse with water. Confirm the bleeders will turn using a box-end wrench and steady pressure before you begin.
Step-by-Step Procedure
- Remove the front reservoir cap and diaphragm.
- Use the syringe to remove most of the old fluid without letting the reservoir run dry.
- Refill with fresh fluid.
- Fit the clear tube onto the bleeder of the front caliper farthest from the master cylinder and route it into the catch bottle.
- Squeeze and hold the lever.
- Open the bleeder about a quarter turn to release fluid and air.
- Close the bleeder before releasing the lever.
- Repeat, topping off the reservoir regularly so it never runs low enough to pull in air.
- Once the fluid in the tube is fresh, clean, and free of bubbles, close the bleeder.
- Bleed the second front caliper the same way, if equipped.
- Bleed the rear caliper using the foot pedal, topping off the rear reservoir as you go.
Avoid These Mistakes
Do not let either reservoir run low, since that puts air right back in the system. Do not release the lever or pedal while the bleeder is open. Do not reuse fluid from the catch bottle. And do not force a stuck bleeder with an open-end wrench or pliers; if it will not move with a box-end wrench and steady pressure, let a shop deal with it rather than risk snapping it.
Finish and Test
Tighten each bleeder snugly without overtightening. Fill the reservoirs to the correct level marks, reinstall the diaphragms and caps, and clean away any spilled fluid. Check the bleeders and banjo fittings for leaks, and inspect the hoses for cracks or swelling.
Before riding, the lever and pedal should feel firm and consistent and should not sink slowly under steady pressure. Spin both wheels to confirm the brakes are not dragging, and test the brakes at low speed in a safe area.
When a Shop Should Take a Look
Have the bike inspected if the lever will not firm up after several bleeds, if it only firms up after pumping, if bubbles keep appearing, or if fluid leaks from a master cylinder or caliper. Persistent problems often trace back to worn seals or aging hoses.
Related Shopping Categories
Shop Brake Fluid for a 2009 Yamaha FZ6 Motorcycle.
Shop Brake Lines for a 2009 Yamaha FZ6 Motorcycle.
Shop Brake Pads for a 2009 Yamaha FZ6 Motorcycle.
Shop Stands for a 2009 Yamaha FZ6 Motorcycle.
Shop Brake Tools for a 2009 Yamaha FZ6 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.
