How to Bleed and Replace Brake Fluid on a 2017 Honda Rincon 680 4X4

Shop parts for a 2017 Honda Rincon 680 4X4 ATV.

This MotoSport guide walks you through a safe, thorough brake fluid replacement and bleed on a 2017 Honda Rincon 680 4X4 (MMY). Procedures here are written for owners who want a reliable DIY job using common tools and good safety practice. Always consult your owner's manual for fluid specification and torque values before beginning.

What you need

  • Fresh brake fluid (use the DOT spec recommended in your owner's manual; many Honda ATVs call for DOT 3 or DOT 4 — confirm your manual)
  • Clear tubing that fits over bleed nipples
  • Clean, sealable container for old fluid
  • Hand pump bleeder, pressure bleeder, or 60cc syringe (pressure or vacuum tools speed the job)
  • 8mm and 10mm wrenches (bleeder and banjo/line fittings are common sizes)
  • Rags, nitrile gloves, safety glasses
  • Brake parts cleaner and small wire brush (for caliper/bleeder cleaning)
  • Jack stands or ramp and wheel chocks

Safety & prep

  • Work on a level surface with the engine off, key removed. Secure the Rincon with wheel chocks.
  • Protect painted surfaces & plastics: brake fluid damages paint. Cover bodywork with rags or plastic.
  • Wear gloves & eyewear. Dispose of old fluid per local hazardous-waste rules.

Model notes for the 2017 Honda Rincon 680

  • The Rincon 680 has hydraulic brakes with calipers and bleed nipples accessible once wheels or splash guards are removed. Caliper mounting orientation may vary front to rear; plan work accordingly.
  • The master cylinder reservoir is typically on the handlebars/front controls for the front brake and near the rear brake assembly for the rear, depending on model year layout — confirm which reservoir feeds which circuit before opening.
  • ABS is not fitted to this model, so bleeding is straightforward without ABS pump cycling requirements.
  • If your Rincon has aftermarket handguards or racks, remove or protect them to access reservoirs and calipers easily.

Step-by-step: Replace brake fluid and bleed

1. Access and inspect

  • Locate master cylinder reservoirs. Clean tops with brake cleaner to avoid contamination.
  • Remove reservoir caps and diaphragms; do not let dirt enter.
  • Inspect hoses and banjo bolts for leaks or corrosion; replace damaged lines before bleeding.

2. Remove old fluid from reservoirs

  • Use a syringe, turkey baster, or hand pump to remove as much old fluid as possible from each reservoir.
  • Refill with fresh fluid to the fill mark to prevent introducing air during the bleeding sequence.

3. Decide bleed method

  • Manual pump method: one person pumps the brake lever/pedal while another opens/closes bleeders.
  • Vacuum or pressure bleeder: one-person method, cleaner and faster. Attach per tool instructions.
  • Gravity bleed: slow, not recommended as only method but can assist initial purge.

4. Bleeding order

  • General rule: start with the caliper farthest from the master cylinder and work toward the nearest. For the Rincon that typically means: rear caliper(s) first, then front calipers. Confirm which reservoir feeds which caliper before starting.
  • If separate reservoirs feed front & rear, bleed the circuit associated with the filled reservoir independently.

5. Bleeding procedure (manual pump method)

  • Attach clear tubing to bleed nipple and submerge the other end in a container partly filled with fresh fluid to avoid drawing air back.
  • With helper: pump the brake lever/pedal multiple times and hold it depressed. Open the bleed nipple about 1/4 turn to let fluid and air escape, then close the nipple before the helper releases the lever. Repeat until clear fluid with no bubbles appears.
  • After each cycle, top the reservoir so it never runs low and brings air into the system.
  • Work through each caliper in the chosen order. When finished with a caliper, tighten bleed nipple securely (finger-tight then a small additional turn with wrench) and wipe clean.

6. Bleeding with a vacuum or pressure tool

  • Follow the tool manufacturer's steps. Attach vacuum to bleed nipple or pressurize reservoir as directed.
  • Open bleed nipple; allow fluid to flow until clear and bubble-free. Close nipple, then move to next caliper.
  • If using a pressure bleeder on reservoir, keep pressure modest and monitor fluid level continuously.

7. Final checks

  • Top reservoirs to the proper mark, reinstall diaphragms and caps securely.
  • Pump the lever/pedal to confirm firm feel. If spongy, re-bleed until solid.
  • Inspect lines, calipers, and banjo bolts for leaks with pressure applied.
  • Clean any spilled fluid from surfaces; remove protective coverings.
  • Test ride slowly in a safe area to verify braking performance before normal use.

Tips & troubleshooting

  • No improvement after bleeding: check for collapsed or internal-leaking hoses, damaged master cylinder seals, or sticky caliper pistons.
  • Persistent air: warm the brake lines slightly by running the ATV briefly (engine off while bleeding?) to help dislodge trapped air, then re-bleed. Always follow safe warm-up practices and be cautious with hot parts.
  • Contaminated system (oil or unknown fluid): flush thoroughly and consider replacing rubber hoses and caliper seals if contamination is evident.

Maintenance interval and final notes

  • Brake fluid hygroscopic properties mean replacement every 1-2 years is common advice for ATVs used regularly or in wet environments. Adjust interval based on riding conditions and fluid inspection.
  • On the 2017 Rincon 680, keeping brake lines and caliper components free of corrosion and road debris will extend service life; check hydraulic fittings at routine service intervals.
  • If you're not confident in diagnosing a soft pedal, uneven braking, or internal master cylinder issues, have a professional technician inspect the system.

Performing a careful brake fluid change and bleed on your Rincon improves safety and longevity. If you need parts or fresh brake fluid for this job, visit the MotoSport parts page linked above to find OEM and aftermarket options tailored to your 2017 Honda Rincon 680.

Related Shopping Categories

Shop Brake Fluid for a 2017 Honda Rincon 680 4X4 ATV.

Shop Brake Bleeders for a 2017 Honda Rincon 680 4X4 ATV.

Shop Brake Pads for a 2017 Honda Rincon 680 4X4 ATV.

Shop Brake Lines for a 2017 Honda Rincon 680 4X4 ATV.

Shop Brake Tools for a 2017 Honda Rincon 680 4X4 ATV.

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.