How to Bleed & Replace Brake Fluid on a 2013 Honda TRX500 Rubicon 4X4 POWER STEERING (FM6)
Shop parts for a 2013 Honda TRX500 Rubicon 4X4 POWER STEERING (FM6) ATV.
This procedural guide is written exclusively for MotoSport and covers step-by-step bleeding and replacing brake fluid on the 2013 Honda TRX500 Rubicon 4X4 Power Steering (FM6). Follow all safety precautions, use the recommended tools and fluid, and work methodically. If you’re not comfortable with brake work, contact a qualified mechanic.
What you need
- DOT 4 brake fluid (Honda recommends DOT 4; check your owner’s manual before purchase)
- Clear hose that fits bleed nipples
- Catch container for old fluid
- Brake bleeder kit or hand pump (vacuum or pressure bleeder recommended)
- Wrenches to open bleed nipples (use correct size)
- Clean rags and nitrile gloves
- Bike stand or ramps to keep wheels off the ground
- Torque wrench for reinstalling wheels and any banjo bolts if removed
Model notes – TRX500 Rubicon FM6
- The FM6 trim includes electric power steering. Brake fluid is hydraulic brake system fluid only — never mix brake fluid with power steering fluid.
- The TRX500 has a single hydraulic system with master cylinder and multiple calipers. Bleed sequence must follow the caliper furthest from the master cylinder first, moving to the closest.
- There is no factory ABS on this model; bleeding is straightforward but watch for trapped air in flexible hoses and caliper cavities.
- Inspect soft brake hoses, banjo fittings and caliper seals while the system is open — replace any cracked or swollen hoses and replace crush washers on banjo bolts if disturbed.
Preparation
- Park on level ground, set parking brake and disconnect the battery if you prefer extra safety while working near the handlebar master cylinder.
- Raise the ATV so all wheels can spin freely and secure it with stands. Remove wheels if needed for easier access to bleed nipples.
- Clean the master cylinder reservoir cap area thoroughly to avoid contamination. Remove the cap and diaphragm, noting fluid level.
- Top the reservoir with fresh DOT 4 fluid, keeping it at or near the max level during the procedure to avoid drawing air back into the system.
Bleeding sequence
Use the standard furthest-to-nearest sequence relative to the master cylinder. If unsure which caliper is furthest from the master cylinder, follow: right rear, left rear, right front, left front (adjust as necessary based on your machine).
Manual two-person method
- One person pumps the brake lever/pedal several times and holds it down.
- Open the bleed nipple on the target caliper about a quarter turn. Fluid and air will flow into the clear hose and into the catch container. Close the nipple before the lever/pedal is released to avoid sucking air back in. Repeat until clear fluid with no air bubbles appears.
- Top the master reservoir as needed to keep the level above the minimum line.
- Move to the next caliper in the sequence and repeat.
Using a vacuum or pressure bleeder
- Attach the vacuum pump to the bleed nipple or the pressure bleeder to the master reservoir per the bleeder kit instructions.
- If using a pressure bleeder on the reservoir, set to a low pressure and open each bleed nipple in sequence until clear fluid flows with no air.
- If using a vacuum pump at each caliper, pump until no bubbles appear and the reservoir level stabilizes.
Flushing & full fluid replacement
To fully replace old fluid, repeat the bleed sequence while repeatedly topping the reservoir with fresh DOT 4 until the fluid draining from each bleed nipple is clear and bright. Continue until the reservoir shows fresh fluid and no discoloration.
Finishing steps
- With bleed nipples closed and tightened snugly, ensure the reservoir cap and diaphragm are clean and reinstalled securely.
- Wipe any spilled fluid immediately — brake fluid will damage painted surfaces. Rinse affected paint with water and mild soap quickly if a spill occurs.
- Reinstall wheels and torque fasteners to spec. Lower the ATV to the ground.
- Pump the brake lever/pedal several times until firm. Test brakes at low speed in a safe area before returning to normal riding.
- Dispose of old brake fluid responsibly; do not pour it down drains or into the environment.
Inspection checklist after bleeding
- Brake lever/pedal feels firm with no sponginess.
- No leaks at bleed nipples, banjo bolts or hoses.
- Master cylinder reservoir level stable and cap sealed.
- Brake light switch operation and parking brake function (if equipped) are normal.
Tips & cautions specific to the TRX500 Rubicon FM6
- Power steering units can mask handling changes; test steering and braking together after service to confirm normal response.
- If you find foam or persistent air in the system after repeated bleeds, inspect for collapsed hoses or internal master cylinder seals that may be allowing air entry.
- Replace the master cylinder reservoir diaphragm if cracked or hardened; a failing diaphragm can introduce contaminants and air.
- Keep brake fluid containers sealed and new fluid free from moisture; DOT fluids are hygroscopic and absorb water which degrades performance.
Perform regular brake inspections and fluid replacement intervals as part of preventive maintenance. When in doubt, trust MotoSport parts and tech support to keep your TRX500 Rubicon FM6 stopping reliably.
Related Shopping Categories
Shop Brake Fluid for a 2013 Honda TRX500 Rubicon 4X4 POWER STEERING (FM6) ATV.
Shop Brake Bleeders for a 2013 Honda TRX500 Rubicon 4X4 POWER STEERING (FM6) ATV.
Shop Brake Pads for a 2013 Honda TRX500 Rubicon 4X4 POWER STEERING (FM6) ATV.
Shop Brake Lines for a 2013 Honda TRX500 Rubicon 4X4 POWER STEERING (FM6) ATV.
Shop Brake Tools for a 2013 Honda TRX500 Rubicon 4X4 POWER STEERING (FM6) 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.