Bleeding the Brakes on Your 2014 Kawasaki Ninja 650
Shop parts for a 2014 Kawasaki EX650 - Ninja 650 Motorcycle.
Know Your Bike's Brake Layout First
The 2014 Kawasaki EX650 — sold as the Ninja 650 — stops on hydraulic disc brakes at both ends. The front brake is fed by a master cylinder on the right handlebar, and the rear is fed by a pedal-driven master cylinder low on the right side of the bike. Both circuits use brake fluid, so both can be bled in a home garage with hand tools. This generation of Ninja 650 was sold with and without ABS, so look at your own machine before you begin: an ABS bike carries a tone ring and wheel speed sensor at each wheel plus a pump unit tucked into the bodywork. If your bike is ABS-equipped, a routine fluid flush through the caliper bleeders is still a normal DIY job, but if the reservoir has ever run dry, or the ABS unit or its lines have been disconnected, air can be trapped where a hand bleed will not reach it and the bike belongs at a dealership. The front and rear brakes on this model are independent — there is no linked system to sequence around.
Why and When to Bleed
Brake fluid is hygroscopic, meaning it pulls moisture out of the air over time. Moisture lowers the fluid's boiling point, and boiled fluid turns to compressible gas — the classic cause of a lever that goes soft during hard, repeated use. Even if your Ninja 650 feels fine, refreshing the fluid on a regular interval is cheap insurance.
Bleed when the lever or pedal feels spongy, when the lever travels closer to the grip than it used to, when the fluid in the reservoir looks dark or cloudy, or any time the hydraulic system has been opened: new lines, caliper service, master cylinder work, or a reservoir that ran low.
Tools and Supplies
- Fresh brake fluid of the type printed on your master cylinder reservoir cap, from a sealed container — opened fluid absorbs moisture, so buy only what you need
- A box-end wrench that fits the bleeder valve snugly
- Clear tubing that fits tightly over the bleeder nipple
- A small catch bottle for the old fluid
- Rags or shop towels, plus water for rinsing spills
- A syringe or turkey baster for pulling old fluid out of the reservoir
- The correct driver for the reservoir cap screws
A one-way check-valve bleeder or a vacuum bleeder makes the job much easier solo, since you are not juggling the wrench and the lever at the same time.
Setting Up Safely
Get the bike upright and stable on a stand. For the front circuit, turn the bars so the reservoir on the handlebar sits level before you remove the cap — a tilted reservoir spills. Drape rags over the tank, the fairing panels, the instrument cluster, and anything else below the reservoir, because brake fluid attacks paint and plastic on contact. If a drop lands on a painted surface, wipe it up immediately and rinse the area with water.
Bleeding the Front Brake
- Remove the reservoir cap and diaphragm. Use the syringe to draw most of the old fluid out of the reservoir, leaving the bottom covered so you do not push air into the line.
- Refill with fresh fluid to the upper level mark.
- Slip the clear tubing over the front caliper bleeder and route the other end into the catch bottle, positioned so the tubing runs uphill from the bleeder where possible.
- Squeeze the front lever smoothly and hold it against the grip.
- With the lever held, open the bleeder about a quarter turn. Fluid and any trapped air will push out through the tubing. Watch the reservoir level.
- Close the bleeder before you release the lever. Releasing with the bleeder open draws air back in through the nipple.
- Release the lever slowly and repeat. Keep the reservoir topped up every few strokes — if it runs dry you have just added air to the system and you are starting over.
- Continue until the fluid coming through the tubing is clean and free of bubbles, then close the bleeder snugly.
- If your Ninja 650 has two front calipers, repeat the whole sequence on the second caliper. As a general practice, start with the caliper farthest from the master cylinder and finish with the closest.
Bleeding the Rear Brake
- Open the rear reservoir, remove most of the old fluid, and top up with fresh.
- Fit the tubing to the rear caliper bleeder and lead it to the catch bottle.
- Press and hold the brake pedal.
- Open the bleeder a quarter turn, let fluid and air escape, then close it before releasing the pedal.
- Release the pedal, top off the reservoir, and repeat until the fluid runs clean and bubble-free.
Finishing Up
Snug the bleeder down firmly without overtightening — the valve is small and easy to damage. Fill the reservoir to the level marking, reinstall the diaphragm and cap, and wipe down every surface you touched. Check the bleeder and the banjo fittings at the master cylinder and caliper for weeping fluid.
Test Before You Ride
The lever and pedal should feel firm and consistent, and should hold pressure without slowly sinking. Spin each wheel and confirm the brakes are not dragging. Then ride at low speed in a safe, empty area and apply each brake separately before riding normally.
When to Stop and See a Shop
If the lever will not firm up after several rounds, if it only firms after pumping, if bubbles keep appearing, or if fluid weeps from the master cylinder or caliper, stop and have the bike inspected. On an ABS-equipped Ninja 650, any sign that air entered the ABS unit itself is a dealer job.
Related Shopping Categories
Shop Brake Fluid for a 2014 Kawasaki EX650 - Ninja 650 Motorcycle.
Shop Brake Lines for a 2014 Kawasaki EX650 - Ninja 650 Motorcycle.
Shop Brake Pads for a 2014 Kawasaki EX650 - Ninja 650 Motorcycle.
Shop Stands for a 2014 Kawasaki EX650 - Ninja 650 Motorcycle.
Shop Brake Tools for a 2014 Kawasaki EX650 - Ninja 650 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.
