How to Bleed and Replace Brake Fluid on a 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6)
Shop parts for a 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6) ATV.
This MotoSport.com service guide covers safe, step-by-step brake-fluid replacement and bleeding for the 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6). Follow these instructions carefully to restore firm braking and avoid contamination. If you are not comfortable working on hydraulic systems, have a qualified technician perform the service.
What you need
- Brake fluid: Honda-approved DOT 3 (or DOT 4 if specified in your owner’s manual). Do not mix mineral oil-based fluids.
- Bleeder wrench or correct-size box wrench for caliper bleeder nipples
- Clear tubing and catch bottle (for gravity or pump bleeding)
- Vacuum or pressure bleeder (recommended for a cleaner, faster job)
- Clean rags, gloves, eye protection
- Brake cleaner, small funnel, disposable syringe (optional)
- Jack or ramps and stands to level the ATV safely
- Service manual or access to factory torque values (for caliper and reservoir fasteners)
Model-specific notes for the 2016 TRX500 Rubicon DCT EPS (FA6)
- The TRX500 Rubicon has separate master cylinders/reservoirs for front and rear brakes: the front master cylinder is on the right handlebar; the rear master cylinder/reservoir is located near the rear brake pedal. Treat both systems individually.
- DCT (Dual Clutch Transmission) and EPS (Electric Power Steering) do not change brake-bleeding procedures, but exercise parking precautions. Engage parking brake or place transmission in Park/Neutral and block wheels before working.
- Avoid getting brake fluid on painted surfaces or plastic components – it damages paint and plastics used on the ATV. Rinse spills with water immediately and wipe dry.
- If your unit has aftermarket calipers, ABS, or an accessory hydraulic actuator, consult MotoSport Parts or a technician before proceeding; variations may change sequence or require special procedures.
Safety and preparation
- Work on a cold brake system. Park on level ground and secure the ATV; chock wheels and use jack stands if lifting.
- Clean the reservoirs and surrounding areas to prevent contamination when you open them.
- Wear eye protection and gloves; brake fluid is corrosive to skin and damaging to paint.
- Keep new fluid caps closed until ready; once opened use promptly and do not reuse drained fluid.
Bleeding strategy and order
Use the following order to minimize air trapped in lines: right front caliper, left front caliper, then rear caliper. This is the recommended order for Honda ATV front/rear systems and helps move air away from the master cylinders.
Step-by-step bleed & fluid replacement
- Remove seat/panels as needed to access rear reservoir and bleed nipples. Clean the reservoir cap area thoroughly.
- Open the front brake reservoir (right handlebar). Siphon out old fluid with a syringe or absorbent cloth and top to the “MAX” line with fresh brake fluid. Do not overflow.
- Attach clear tubing to the right front caliper bleed nipple and run the other end into a clear bottle partially filled with fresh fluid (bottle below nipple level to prevent suction back into caliper).
- Have an assistant slowly pull the front brake lever several times and hold it while you open the bleed nipple one-quarter to one-half turn. Fluid and air will flow into the bottle. Close the nipple before the lever is released. Repeat until clear, bubble-free fluid flows. Keep the reservoir topped between pumps.
- Repeat the same process on the left front caliper. Keep checking and topping the front reservoir to prevent air from entering the master cylinder.
- When front calipers are clear, move to the rear system. Open the rear reservoir, remove old fluid, and top with fresh fluid. Attach tubing to the rear caliper bleed nipple and bleed using the pedal rather than the lever: have an assistant depress the rear brake pedal slowly and hold, open the nipple to bleed, then close before releasing the pedal. Repeat until clear fluid emerges and no air bubbles appear.
- After bleeding all calipers, verify reservoir fluid levels are at the correct mark for each reservoir. Replace caps and tighten bleed nipples to factory torque (or snug plus a fraction, then final torque per manual if available).
- Check lever and pedal feel: lever should be firm with minimal travel; pedal should return solidly. If spongy feel persists, repeat bleeding sequence or use a pressure/vacuum bleeder for a more thorough purge.
- Wipe all components clean with brake cleaner, remove tools, lower the ATV, and perform a low-speed brake check in a safe area to confirm proper operation before riding normally.
Tips & troubleshooting
- If you see persistent bubbles, inspect hoses and connections for leaks or collapsed sections; heat-damaged hoses can allow air infiltration and should be replaced.
- Use a vacuum or pressure bleeder to make the job faster and to reduce the chance of introducing air. MotoSport technicians recommend a vacuum bleeder on difficult systems.
- Never reuse old fluid. Dispose of old brake fluid as hazardous waste per local rules.
- If you replaced lines, calipers, or the master cylinder, perform multiple complete bleed cycles and consider bench-bleeding a replaced master cylinder before installation.
After-service checks
- Confirm there are no leaks at bleed nipples, hose fittings, caliper banjo bolts, or reservoir caps.
- Verify brake light switch operation and that the parking/park gear interlock functions normally for DCT models.
- Recheck fluid level after the first short ride; some settling can occur and a small top-up may be required.
Performing a full brake-fluid flush and bleed on your 2016 Honda TRX500 Rubicon DCT EPS restores brake performance and helps prevent corrosion inside the hydraulic system. For OEM-quality replacement parts and tools tailored to this model, trust MotoSport.com to keep your Rubicon stopping strong.
Related Shopping Categories
Shop Brake Fluid for a 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6) ATV.
Shop Brake Bleeders for a 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6) ATV.
Shop Brake Pads for a 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6) ATV.
Shop Brake Lines for a 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6) ATV.
Shop Brake Tools for a 2016 Honda TRX500 Rubicon 4X4 DCT EPS (FA6) 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.
