Bleeding the Brakes on a 2014 Honda VFR800F Interceptor

Shop parts for a 2014 Honda VFR800F - Interceptor Motorcycle.

Know Your VFR800F's Brake Layout First

The 2014 VFR800F carries hydraulic disc brakes at both ends, so this job covers the front lever circuit and the rear pedal circuit. The bike also left the factory with anti-lock braking, and Honda's system on this generation ties the front and rear circuits together in a combined arrangement. That matters for one practical reason: a routine fluid refresh through the caliper bleeders is well within reach of a home mechanic, but the internal ABS and proportioning hardware is not something you can purge by hand at the caliper. If air has migrated into that hardware — typically because the reservoir ran dry mid-bleed, a line was disconnected, or the ABS unit was disturbed — the bike needs a dealer-level procedure or diagnostic tool to finish the job. Read the rest of this guide with that boundary in mind, and stop if you cross it.

Signs the System Is Due for a Flush

Bleeding does two jobs at once: it pushes trapped air out of the hydraulic circuit and it replaces old fluid with fresh. Air shows up as a lever or pedal that feels spongy, vague, or that travels closer to the grip or the footpeg than it used to. Fluid condition shows up visually — pull the reservoir cap and look for dark, cloudy, or contaminated fluid instead of a clean amber. Any repair that opened the system, such as new lines, caliper service, or master cylinder work, demands a bleed afterward regardless of how the lever feels.

Even with no symptoms, brake fluid pulls moisture out of the air over time. That moisture lowers the fluid's boiling point, and a boiled fluid creates gas in the lines under hard, repeated braking — exactly when you need the brakes most. Many riders simply refresh the fluid on a regular interval as preventive maintenance rather than waiting for a soft lever to tell them something is wrong.

Gather These Tools and Supplies

  • Fresh brake fluid of the type printed on your 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 box-end grips the hex far better than an open-end and is less likely to round it off.
  • Clear tubing sized to fit tightly over the bleeder nipple, long enough to reach your catch bottle.
  • A clear catch bottle so you can watch the fluid and any bubbles coming through.
  • Rags or shop towels, plus 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.

Set Up Before You Open Anything

Get the bike secure and upright on a stand so it cannot tip while you are leaning on the lever. For the front circuit, turn the handlebar until the reservoir sits level — a tilted reservoir will spill the moment you remove the cap. Then drape rags over the tank, the fairing panels, the instrument cluster, and anything else below the reservoir. Brake fluid attacks paint and many plastics on contact, so treat every drop as a problem: wipe it up immediately and rinse the area with water if it reaches a painted or plastic surface.

The Bleeding Procedure, Step by Step

  1. Remove the reservoir cap and diaphragm. Use the syringe or baster to draw most of the old fluid out of the reservoir, but leave enough in the bottom that you never expose the port to air.
  2. Top the reservoir up with fresh fluid from your sealed container.
  3. 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.
  4. Squeeze the front lever and hold it, or press and hold the rear pedal if you are working the rear circuit. Hold the pressure steady.
  5. Open the bleeder about a quarter turn. Fluid and any trapped air will push out through the tube. Watch the tube, not the reservoir.
  6. Close the bleeder fully before you release the lever or pedal. Releasing first draws air back in through the open valve — this is the single most common mistake in the whole job.
  7. Repeat the squeeze, hold, open, close, release cycle. Keep an eye on the reservoir and top it off every few cycles so it never runs low enough to pull air into the master cylinder.
  8. Continue until the fluid coming through the tube runs clean and clear with no bubbles, then do a few more cycles for good measure.
  9. If your bike 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.
  10. Move to the rear circuit and repeat the same sequence at the rear bleeder, using the pedal instead of the lever.

Buttoning It Up

Close the bleeder snugly — firm enough that it will not weep, but not so hard that you crush the seat or damage the caliper threads. Pull the tubing off and wipe the area clean. Fill the reservoir to the level marking, reinstall the diaphragm and cap, and check the bleeder and the banjo fittings at the master cylinder and caliper for any sign of weeping. A dry paper towel wiped around each fitting tells you quickly whether you have a leak.

Confirm the Job Before You Ride

The lever and pedal should feel firm and consistent, and should hold pressure without slowly sinking while you hold them. Spin each wheel by hand to confirm the brakes are not dragging. Then, in a safe open area, test the brakes at low speed before riding normally. If the lever still feels soft, or firms up only after several pumps, air is still in the system — or it has reached the ABS hardware, which is a shop job on this bike. Persistent bubbles, fluid weeping from the master cylinder or a caliper, or a lever that never firms up after several honest attempts all point to the same conclusion: stop and have a professional finish the job.

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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.