How to Bleed and Replace Brake Fluid on a 2019 Textron Alterra TBX 700

Shop parts for a 2019 Textron Alterra TBX 700 ATV.

This proprietary MotoSport guide covers tools, materials, and a stepbystep procedure to flush and bleed the hydraulic brakes on the 2019 Textron Alterra TBX 700. Follow these instructions carefully for safe, reliable braking performance.

What you need

  • DOT 4 brake fluid (MotoSport recommends DOT 4 for the TBX 700)
  • Clear plastic tubing that fits snugly over caliper bleed nipples
  • Clean catch bottlepartially filled with old fluid or a small quantity of fresh fluid to prevent air backflow
  • Hand vacuum pump or manual brake bleeder (optional but speeds the job)
  • Wrenches to fit bleed nipples (typically 8mm or 10mm); adjustable wrench for reservoir cap
  • Clean lintfree rags and brake cleaner
  • Protective gloves & eye protection
  • Jack, blocks, or ATV lift to safely elevate the vehicle if needed

Model notes for the 2019 Textron Alterra TBX 700

  • The TBX 700 uses hydraulic disc brakes front and rear; there are separate calipers for each wheel. There is no integrated ABS on most model variants, so each caliper must be bled individually.
  • Master cylinder reservoirs are accessible but sit under body panels on some trim levelsremove the small access panels to inspect fluid level and condition.
  • Use DOT 4 brake fluid only; mixing different fluid chemistries risks seal damage. MotoSport recommends replacing fluid every 12-24 months depending on use and exposure to water.
  • If you ride in deep water or mud frequently, inspect and consider bleeding more often. Water contamination is the most common cause of spongy brakes.

Safety first

  • Work on a level surface with the engine off and parking brake engaged (if applicable).
  • Wear gloves & eye protectionbrake fluid is corrosive to paint and skin.
  • Keep brake fluid off bodywork; wipe spills immediately and rinse with water.

Basic preparation

  1. Park the ATV, chock wheels, and if needed, raise the wheels so calipers are accessible. Support securely.
  2. Clean the area around the master reservoir cap and the caliper bleed nipples to prevent contamination.
  3. Remove the reservoir cap and diaphragm. Top up with fresh DOT 4 fluid until near the max mark; do not overfill.
  4. Attach clear tubing to the caliper bleed nipple and insert the other end into the catch bottle partially filled with old fluid to avoid drawing air back in.

Sequence

Bleed from the caliper farthest from the master cylinder first and finish with the closest. For the TBX 700 this generally follows: rear passenger side (if applicable) – rear driver side – front passenger side – front driver side. If you are unsure, bleed each caliper one at a time until clear, bubblefree fluid flows and the pedal feels firm.

Manual pedal pump method

  1. Have a helper slowly depress the brake lever/pedal several times and hold it down.
  2. Open the bleed nipple one quarter to one half turn to let fluid and air escape into the tubing/catch bottle. Tighten the nipple before your helper releases the lever/pedal.
  3. Repeat pump & open cycles until clear fluid (no bubbles) and a firm lever/pedal are achieved.
  4. Frequently top up the master reservoir to keep it above the minimum level to avoid introducing air into the system.

Vacuum or pressure bleed method (recommended for a cleaner job)

  1. Attach the vacuum pump hose to the bleed nipple and set the pump to draw fluid into the catch bottle.
  2. Open the bleed nipple and pump until clear, bubblefree fluid appears. Close the nipple before stopping the vacuum to prevent air entry.
  3. Top off the master reservoir as needed.

Flushing the entire system (full replacement)

  1. Perform the bleed procedure at every caliper in sequence until only fresh fluid flows from each bleed nipple. This ensures old, moistureladen fluid is fully replaced.
  2. When the final caliper runs clear, close its bleed nipple, pump the brake lever/pedal a few times to check firmness, then recheck all nipples for tightness.
  3. Clean any spilled fluid, reinstall the reservoir diaphragm & cap, and ensure the fluid level is at the proper mark.

Finishing checks

  • Wipe all fittings clean and torque bleed nipples snugly by feel; do not overtighten.
  • Check for leaks at calipers, hose banjo bolts, and the master cylinder. Reinspect after a short test ride.
  • Bed in new fluid/brake pads with progressive stops after the service to ensure consistent braking performance.
  • Dispose of old fluid properly at a hazardous waste facility.

Troubleshooting

  • Spongy brake lever after bleeding: repeat the bleed sequence and ensure the reservoir never ran low during the process.
  • Persistent air: use a pressure or vacuum bleeder and work in short, controlled openings of the nipple to avoid drawing air in on release.
  • Leaking fittings: replace sealing crush washers at banjo fittings and use proper brake line torque spec from Textron service manual if available.

Maintenance tips specific to the TBX 700

  • Inspect brake hoses and banjo fittings for abrasion from cargo racks or frame mounts typical on TBX models.
  • Check caliper mounting bolts and pads for uneven wear & debris after trail rides; TBX operators often see mud & grit that accelerates pad wear.
  • Keep replacement pad and rotor part numbers handy when ordering parts from MotoSport to minimize downtime.

After completing the bleed and fluid replacement, perform a slow, controlled test ride in a safe area to confirm firm brakes before regular riding.

Related Shopping Categories

Shop Brake Fluid for a 2019 Textron Alterra TBX 700 ATV.

Shop Brake Bleeders for a 2019 Textron Alterra TBX 700 ATV.

Shop Brake Pads for a 2019 Textron Alterra TBX 700 ATV.

Shop Brake Lines for a 2019 Textron Alterra TBX 700 ATV.

Shop Brake Tools for a 2019 Textron Alterra TBX 700 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.