Bleeding the Brakes on a 1987 Honda CBR600F Hurricane
Shop parts for a 1987 Honda CBR600F - Hurricane Motorcycle.
The 1987 Honda CBR600F Hurricane stops with hydraulic disc brakes at both ends: a front system fed by the master cylinder on the handlebar and a separate rear system fed by the pedal master cylinder. There is no ABS unit and no linked-brake plumbing on this machine, so each end is a self-contained circuit that you bleed on its own. That simplicity works in your favor. No diagnostic tool is required, there is no proportioning sequence to follow, and the whole job comes down to a reservoir, a hose, a caliper, and a bleeder screw. What the job does demand is patience and a strict rule about never letting the reservoir run dry.
How to Tell When the Fluid Needs Replacing
Brake fluid is hygroscopic, meaning it pulls moisture out of the air over time. Moisture does two harmful things: it lowers the fluid’s boiling point, so hard repeated braking can boil the fluid and give you a soft, fading lever, and it corrodes the internals of the master cylinder and calipers from the inside. On a bike of this age, that slow decay is the most common reason a brake feels vague.
Watch for a lever that feels spongy or pulls closer to the grip than it used to, a rear pedal with a long, soft travel, fluid in either reservoir that looks dark, cloudy, or gritty, and any recent work that opened the system — new lines, a caliper rebuild, or master cylinder service. Even with no symptoms at all, refreshing the fluid on a regular interval is cheap insurance on a machine that is closing in on four decades old.
Tools and Supplies to Have Ready
- Fresh brake fluid of the type printed on the master cylinder reservoir cap, from a sealed container. Do not substitute a different type.
- A box-end wrench that fits the bleeder valve snugly — a six-point box end grips better than an open end and is less likely to round the screw.
- A length of clear tubing that fits tightly over the bleeder nipple, plus a catch bottle to hang it in.
- Rags or shop towels, and a syringe or turkey baster for pulling old fluid out of the reservoir.
- The correct driver for the reservoir cap screws.
- Optional but helpful: a one-way check-valve bleeder or a vacuum bleeder, which makes a one-person job much less fiddly.
Setting Up Before You Open Anything
Get the Hurricane secure on a stand so it cannot tip. For the front circuit, turn the handlebars until the reservoir on the bar sits level; a tilted reservoir spills the moment the cap comes off. Lay rags over the tank, the fairing panels, the gauges, and anything else below the reservoir, because brake fluid attacks paint and plastic almost on contact. If a drop does land on a painted surface, wipe it up immediately and rinse the area with water rather than waiting until you finish.
Work through one circuit at a time. Finish and button up the front before you start on the rear, so you never have two open systems competing for your attention.
The Bleeding Procedure, Step by Step
- Wipe the reservoir cap and the area around it clean so grit cannot fall in, then remove the cap and the diaphragm.
- Use the syringe or baster to draw most of the old fluid out of the reservoir. Leave a little in the bottom so you do not push air into the master cylinder.
- Top the reservoir up with fresh fluid from the sealed container.
- Push the clear tubing onto the bleeder valve and route the other end into the catch bottle, with the bottle positioned so the tube’s end stays submerged.
- Squeeze the front lever, or press the rear pedal, and hold it firm. Do not release it.
- With the lever or pedal held, crack the bleeder about a quarter turn with the box-end wrench. Fluid and air will push out through the tube.
- Close the bleeder before you let the lever or pedal return. This is the step that matters most — releasing first draws air back in through the bleeder.
- Release the lever or pedal slowly, then check the reservoir and top it off. Repeat the squeeze, hold, open, close, release cycle until clean, bubble-free fluid runs through the tube.
- If your Hurricane has two front calipers, bleed each one in turn rather than trying to do both at once. As a general practice, start with the caliper farthest from the master cylinder and work toward the closest.
- Keep checking the reservoir level between every few cycles. If it drops low enough to let the master cylinder suck air, you have just added a new problem to the job.
Closing Everything Up
When the fluid coming through the tube is clean and free of bubbles, hold the lever or pedal, close the bleeder snugly — firm, not forced, since overtightening can damage the seat — and pull the tubing off. Fill the reservoir to the level marking on the body, reinstall the diaphragm and cap, and wipe down any residue. Look closely at the bleeder and at the banjo fittings at the master cylinder and caliper for weeping or dampness.
Confirming the Job Is Done Right
The lever and pedal should feel firm and consistent, and should hold pressure without slowly sinking while you keep steady force on them. Spin each wheel by hand to confirm the brake is not dragging. Then, in a safe open area, test at walking pace and build up gradually before riding normally. If the lever still feels soft, or firms up only after a couple of pumps, there is air left in the system and you need to go back through the procedure.
When to Hand the Bike to a Shop
Stop and get professional help if the lever will not firm up after several honest attempts, if bubbles keep appearing no matter how long you bleed, if fluid is seeping from the master cylinder or a caliper, or if a fitting will not seal. On this machine there is no ABS unit to complicate matters, which is one reason the job usually stays in the home garage — but a brake system that will not hold pressure is not something to ride on while you keep guessing.
Related Shopping Categories
Shop Brake Fluid for a 1987 Honda CBR600F - Hurricane Motorcycle.
Shop Brake Lines for a 1987 Honda CBR600F - Hurricane Motorcycle.
Shop Brake Pads for a 1987 Honda CBR600F - Hurricane Motorcycle.
Shop Stands for a 1987 Honda CBR600F - Hurricane Motorcycle.
Shop Brake Tools for a 1987 Honda CBR600F - Hurricane 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.
