How to Bleed and Replace Brake Fluid on a 2010 Honda Rincon 680 4X4
Shop parts for a 2010 Honda RINCON680 ATV.
Overview
This MotoSport guide covers step-by-step brake fluid change and bleeding for the 2010 Honda Rincon 680 4X4. It is written specifically for Rincon owners and highlights model-specific details you should know before you start.
What to know about the 2010 Honda Rincon 680
- The Rincon 680 uses separate master cylinders/circuits for front and rear brakes. Bleed and service each circuit independently.
- Brake components are accessible but may require partial wheel removal or skid-plate removal for best access to caliper bleed nipples.
- The Rincon uses a conventional hydraulic braking system without ABS or complex electronic valves, making bleeding straightforward but requiring careful fluid management.
- Rincon owners should inspect the parking brake linkage (rear brake) during service &ndash the parking brake can mask a sticking caliper or uneven braking if not adjusted correctly.
- Replace brake fluid at least every 1-2 years or sooner if contaminated by water or debris; brake performance and corrosion protection depend on fresh fluid.
Tools & supplies
- DOT 3 brake fluid (check owner's manual; DOT 4 is compatible but DOT 3 meets factory spec)
- Brake bleeder wrench or 8mm wrench (confirm bleed nipple size visually)
- Clear plastic hose and catch bottle
- Rubber gloves, safety glasses, rags
- Hand vacuum or pressure bleeder (optional but speeds the job)
- Jack or ramps and stand to lift machine if needed
- Shop towels and brake cleaner
Preparation
- Park on level ground, set the parking brake, and turn off the engine. Block wheels to prevent movement.
- Remove skid plates or wheels if necessary for access to caliper bleed nipples.
- Clean around the master cylinder reservoir caps to avoid contamination. Remove the cap and diaphragm carefully.
- Inspect hoses, lines, calipers, and master cylinder for leaks or damage; replace any cracked lines before bleeding.
Which fluid to use
Use fresh DOT 3 brake fluid. If DOT 4 is used, it is generally compatible, but avoid mixing glycol-based fluid with silicone-based fluid. Always keep the reservoir cap closed as much as possible to prevent moisture absorption.
General bleeding principles
Keep the master cylinder reservoir top full throughout the bleed process to prevent air being drawn back into the system. Work one circuit at a time (front circuit then rear circuit, or as the manual indicates). Bleed the caliper farthest from the master cylinder first, then work toward the closest.
Recommended bleed sequence for Rincon 680
- If a single master cylinder serves both front calipers, start with the furthest caliper from that master cylinder. In practice, bleed the passenger-side/front-right caliper first, then driver-side/front-left (confirm layout on your unit).
- Bleed the rear circuit separately &mdash usually start with the caliper furthest from the rear master cylinder and finish with the closest. If the rear has integrated parking brake hardware, ensure the parking brake is released during bleeding.
Manual (two-person) bleed method
- Fill the reservoir with fresh DOT 3 fluid and have a helper slowly pump the brake lever/pedal several times and hold firm pressure.
- Attach clear hose to the caliper bleed nipple and place the other end in a catch bottle partially filled with fresh fluid to prevent air re-entry.
- Open the bleed nipple 1/4 turn; fluid and air will flow into the bottle. Close the nipple before the helper releases the lever/pedal. Repeat until no air bubbles appear.
- Keep topping the reservoir as needed and repeat for each caliper in sequence. Final check: brake lever/pedal should feel firm and not sink.
One-person vacuum or pressure bleeder method
- Attach vacuum pump to the caliper bleed nipple or use a pressure bleeder on the master reservoir per tool instructions.
- Activate vacuum/pressure and open bleed nipple. Watch for clean fluid with no bubbles. Move through calipers in proper sequence.
- Top off reservoir and secure cap when finished.
Flushing entire system (recommended)
To fully replace old fluid, repeatedly draw new fluid through until the expelled fluid is clear and free of debris. Do not let the reservoir run dry at any point.
After bleeding checks
- Check lever/pedal firmness and travel; if soft, re-bleed the affected circuit.
- Inspect bleed nipples and hose connections for leaks. Tighten bleed nipple hand-tight plus a small fraction of a turn if necessary, but do not over-torque.
- Clean any spilled fluid from painted surfaces; brake fluid damages paint and plastics.
- Properly dispose of used brake fluid according to local regulations.
Common trouble points on the Rincon
- Parking brake dragging: often caused by stuck rear caliper or corroded linkage. Free and lubricate linkages if present.
- Stiff master cylinder or sticky lever: inspect seals and reservoir for contamination; rebuild or replace master cylinder if internal seals are compromised.
- Hard-to-access bleed nipples: removing wheel or skid plate improves access and reduces risk of cross-threading when tightening.
Maintenance tips unique to MotoSport
- Use MotoSport-recommended DOT 3 brake fluid and OEM-style bleeder caps to maintain system integrity.
- Keep a service log: note fluid type and date of service. Routine replacement prolongs caliper and line life on the Rincon.
- When replacing hoses or calipers, use quality replacement parts and new crush washers on banjo bolts to prevent leaks.
Final safety reminder
Test brakes at low speed in a safe area before normal riding. Confirm parking brake function and that brake lights operate correctly (if applicable) after service.
Related Shopping Categories
Shop Brake Fluid for a 2010 Honda RINCON680 ATV.
Shop Brake Bleeders for a 2010 Honda RINCON680 ATV.
Shop Brake Pads for a 2010 Honda RINCON680 ATV.
Shop Brake Lines for a 2010 Honda RINCON680 ATV.
Shop Brake Tools for a 2010 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.