How to Bleed & Replace Brake Fluid on a 2014 Honda Rincon 680 4X4

Shop parts for a 2014 Honda RINCON680 ATV.

Overview & safety

This MotoSport guide covers safely flushing and bleeding the hydraulic brake system on a 2014 Honda Rincon 680 4X4. Work on a cool, level machine; wear safety glasses and nitrile gloves; brake fluid damages paint & plastics. Use only fresh DOT brake fluid as specified by Honda (consult the owner’s manual for DOT 3 or DOT 4 recommendation). Do not reuse old fluid.

Tools & supplies

  • Honda-specified DOT 3 or DOT 4 brake fluid
  • Clear bleeder hose and catch bottle
  • Box wrenches (bleeder nut size commonly 8 mm, verify on machine)
  • Socket set & torque wrench for caliper/line hardware
  • Turkey baster or fluid transfer pump
  • Clean rags, drip pan, and brake-clean spray
  • Helper (recommended) or a vacuum/pressure bleeder
  • Protective gloves & eye protection

Model notes for the 2014 Honda Rincon 680

  • The Rincon 680 uses a hydraulically actuated front and rear brake system with a reserve fluid reservoir accessible on the handlebar/master cylinder area. There is no ABS on this model.
  • The system is split into circuits; bleeding each caliper individually is required to ensure no air remains. The front calipers are independent left/right; rear caliper(s) are on the rear axle assembly. Identify the master cylinder reservoir location before beginning.
  • Rincon parking brake mechanisms should be inspected while brakes are cold; parking brake adjustments do not replace hydraulic bleeding.
  • Brake hose routing on the Rincon is secured with clips along the swingarm and A-arms — avoid pinching when operating suspension full travel during bleeding.

Preparation

  1. Park on level ground, engage park/parking brake, and disconnect the battery negative terminal as a safety precaution.
  2. Clean around the master cylinder reservoir cap to avoid contamination. Remove the cap and diaphragm; use a turkey baster to extract old fluid to below the min line.
  3. Top the reservoir with fresh brake fluid to the full mark. Keep the cap loosely in place or cover the opening with a clean cloth to prevent dirt entry.
  4. Raise the wheels as needed so caliper bleeder screws are accessible and suspension can be cycled without stressing hoses.

Bleeding sequence & method

Recommended sequence: bleed the caliper furthest from the master cylinder first, then work toward the closest. On many Rincon layouts that sequence is: rear caliper (if single rear) then front right then front left, but confirm reservoir/master routing on your machine. If uncertain, identify which caliper is furthest by tracing hard lines from the master cylinder.

Method A — Two-person pump-and-hold

  1. Have an assistant slowly pump the brake lever/pedal several times and hold steady pressure.
  2. Open the bleeder screw on the caliper furthest from the master about a 1/4 turn. Attach clear hose to direct fluid to catch bottle. Fluid and air bubbles will flow out; close the screw before the assistant releases pressure to avoid sucking air back in.
  3. Repeat pumping, holding, opening, closing until no air bubbles appear and fluid is clear. Keep the reservoir topped off between cycles.
  4. Work toward the next caliper, repeating the same procedure. Finish with the caliper closest to the master cylinder.

Method B — Vacuum or pressure bleeder (preferred for single operator)

  1. Attach a vacuum pump to the bleeder nipple with clear hose or connect a pressure bleeder to the master cylinder reservoir per the tool’s instructions.
  2. Operate the pump/pressure device and open the bleeder until fluid runs clear and bubble-free. Close bleeder while maintaining vacuum/pressure.
  3. Move through calipers in the same furthest-to-closest sequence. Maintain reservoir level and avoid running the reservoir dry.

Replacing all fluid (full flush)

  1. If performing a full system flush, siphon old fluid from the reservoir first, then refill with fresh fluid.
  2. Bleed each caliper until the fluid returning to the reservoir is clean and free of bubbles. Continue cycling until the reservoir shows clean fresh fluid and no air returns from any circuit.
  3. When finished, tighten each bleeder to the correct snugness (do not over-torque); check fittings and lines for leaks.

Finishing steps & inspection

  • Top reservoir to the proper level and reinstall diaphragm and cap securely.
  • Wipe any spilled fluid and spray brake-clean on contact areas. Inspect paint and plastics for damage — if fluid contacted painted surfaces, rinse with water immediately and clean.
  • Reconnect battery negative terminal if disconnected.
  • Lower the vehicle, slowly apply brakes several times to confirm firm pedal/lever feel. Park on level ground and test brakes at low speed in a safe area before riding normally.
  • Dispose of used fluid per local hazardous-waste regulations.

Troubleshooting & tips

  • Spongy lever/pedal after bleeding usually indicates trapped air. Re-bleed following the same furthest-to-closest order, ensuring the reservoir never runs low.
  • If you can compress the lever/pedal to the bar with no lever movement improvement, inspect the master cylinder and calipers for internal leaks or a weak master; replacement may be required.
  • Use short bursts of pressure and close bleeders promptly to avoid drawing air back in.
  • Replace brake hoses if they are cracked, swollen, or soft; aging hoses can allow air ingress under pressure.

Maintenance interval & recommendations

MotoSport recommends replacing brake fluid every 1-2 years depending on rider use and exposure to moisture. For machines used in wet or high-humidity environments, check fluid more frequently. Record the date and mileage/hours in your maintenance log.

Torque & hardware notes

Always tighten caliper mounting bolts and brake line fittings to Honda factory torque specs. If factory torque values aren’t available for a component you’re working on, consult a dealer or the service manual before final torqueing. Avoid overtightening bleeder screws; snug plus a small fraction is adequate to prevent leaks.

When to call a pro

  • If bleeding doesn’t restore firm brakes, or if you suspect internal master cylinder or caliper failure.
  • If you locate fluid leaks at the master cylinder body, banjo fittings, or caliper seals that require resealing or component replacement.

Keeping the Rincon 680 braking system serviced and using clean fluid ensures predictable stopping power and extends component life – critical for safe ATV use on trails, work sites, and steep terrain.

Related Shopping Categories

Shop Brake Fluid for a 2014 Honda RINCON680 ATV.

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Shop Brake Tools for a 2014 Honda RINCON680 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.