How to Bleed and Replace Brake Fluid on a 1995 Honda TRX300 FOURTRAX 2X4

Shop parts for a 1995 Honda TRX300 FOURTRAX 2X4 ATV.

This MotoSport guide walks you through a safe, thorough brake fluid replacement and bleeding procedure for a 1995 Honda TRX300 FOURTRAX 2X4. Follow each step, use the recommended supplies, and perform a final check before riding.

What you need

  • DOT 3 brake fluid (confirm reservoir cap label)
  • Clear hose long enough to reach a container
  • Clean catch bottle or jar
  • Wrench set sized for bleeder screws
  • Turkey baster or fluid syringe
  • Brake parts cleaner and rags
  • Gloves and safety glasses
  • Jack or ramp and blocks to secure ATV
  • Assistant for manual bleeding or vacuum pump for one-person bleed

Model notes & pre-checks specific to the 1995 TRX300 FOURTRAX 2X4

  • Confirm brake type: inspect front and rear assemblies to determine drum or disc hardware before starting. This model may use drum hardware in certain markets and disc in others; procedures differ only at the caliper or wheel cylinder bleeding point.
  • Reservoir location: the master cylinder reservoir sits near the handlebars. Keep the cap and diaphragm area clean to prevent contamination when opened.
  • Age-related seals: rubber hoses and bleeder screw threads on a 1995 machine can be corroded. Have replacement crush washers and a spare bleeder screw available.
  • Brake pads and drums: inspect pads, shoes, rotors and drums while fluid is drained. Replace worn linings first to avoid repeat bleeding after pad-in-bed.

Safety first

  • Work on a flat, stable surface. Chock wheels to prevent movement.
  • Brake fluid damages paint and plastic. Wipe spills immediately and use a drain container.
  • Do not reuse old fluid. Dispose of used brake fluid responsibly.

Step 1 – Prepare the ATV

  • Park, engage parking brake if equipped, and turn off engine.
  • Clean around the master cylinder cap. Remove cap and diaphragm to expose fluid.
  • If fluid is dark, plan a full flush; if only topping up, note level. Keep reservoir topped during procedure to avoid drawing air into the system.

Step 2 – Remove old fluid from the reservoir

  • Use a turkey baster or syringe to extract as much old fluid as possible from the reservoir.
  • Refill with fresh DOT 3 fluid to the max mark and reinstall the cap loosely while performing bleeding to reduce contamination risk.

Step 3 – Bleeding order and method

Bleed starting with the wheel farthest from the master cylinder and move to the closest. For many ATVs the typical order is rear, then front left, then front right. Confirm on your machine by tracing brake lines.

  • Attach clear hose to the bleeder screw and submerge the other end in a catch bottle partially filled with clean fluid to prevent air reentry.
  • Have an assistant slowly depress the brake lever or pedal several times and hold it down. Open the bleeder screw with the wrench until fluid flows and air bubbles stop, then close the screw before the assistant releases the lever.
  • Repeat at each wheel until fluid runs clear and bubble-free, topping up the reservoir frequently.
  • If working alone, use a vacuum pump or pressure bleeder to pull fluid through the system; follow pump manufacturer guidance.

Step 4 – Special notes for drum wheel cylinders

  • If your TRX300 has drum brakes, bleeding is done at the wheel cylinder bleeder. Clean the area thoroughly to avoid contamination of shoes and drum surfaces.
  • After bleeding, spin the wheel and apply the brakes several times to re-center shoes and confirm firm pedal/lever feel.

Step 5 – Master cylinder bench check

  • If the master cylinder is spongy after wheel bleeding, bench-bleed the master cylinder: remove it, secure in a vise or fixture, cycle fluid through until no air appears, then reinstall and re-bleed the wheels.
  • Use a bench-bleed kit or a looped hose method to push fluid through the master ports while actuating the lever.

Step 6 – Final system flush and verification

  • Once all wheels are clear, flush lines by repeatedly filling the reservoir and cycling fluid until the reservoir fluid is fresh and clear.
  • Torque bleeder screws and any fasteners to proper specification where applicable. If unsure, snug securely but avoid rounding the screws.
  • Clean all components and remove spilled fluid. Reinstall reservoir cap and diaphragm.
  • With ATV on level ground, apply brakes repeatedly until they feel firm and consistent. Test at low speed in a safe area to confirm stopping performance.

Troubleshooting & maintenance tips

  • Soft lever after bleeding usually means air remains or internal leakage. Re-check bleeder screws and hoses for leaks, and bench-bleed the master cylinder if necessary.
  • Replace cracked or swollen hoses and corroded lines. On older TRX300s, rubber hose deterioration is common and can reintroduce air or fail under pressure.
  • Keep records of fluid changes. Brake fluid absorbs moisture over time – replace every 1 to 2 years depending on use and storage conditions.
  • If you find seized bleeder screws, heat and penetrating fluid may help but be prepared to replace the screw and/or caliper if damaged.

What to inspect while you have the system open

  • Brake linings, drum/rotor condition, wheel bearing play, and caliper slide pins for smooth movement.
  • Reservoir cap diaphragm for hardening or cracks and replace if compromised.
  • Brake light switch operation if your model routes brake fluid work near switch wiring.

Final checklist before riding

  • All fittings tight and clean, no leaks under pressure.
  • Brake lever/pedal firm and consistent at normal travel.
  • Test ride at low speed to verify effective stopping distance and no unusual noises.

Performing a proper brake fluid flush and bleed will restore pedal feel and safety to your 1995 Honda TRX300 FOURTRAX 2X4. If you encounter persistent problems or suspect internal master cylinder or caliper failure, consult a qualified technician or MotoSport service resource for support.

Related Shopping Categories

Shop Brake Fluid for a 1995 Honda TRX300 FOURTRAX 2X4 ATV.

Shop Brake Bleeders for a 1995 Honda TRX300 FOURTRAX 2X4 ATV.

Shop Brake Pads for a 1995 Honda TRX300 FOURTRAX 2X4 ATV.

Shop Brake Lines for a 1995 Honda TRX300 FOURTRAX 2X4 ATV.

Shop Brake Tools for a 1995 Honda TRX300 FOURTRAX 2X4 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.