How to Bleed and Replace Brake Fluid on a 2019 Textron Alterra 570 XT

Shop parts for a 2019 Textron Alterra 570 XT ATV.

This MotoSport-exclusive guide walks you step-by-step through safely replacing and bleeding the brake fluid on a 2019 Textron Alterra 570 XT. Follow these instructions carefully to maintain brake performance and safety. If you prefer a shop-quality process, use a hand or vacuum bleeder and quality DOT 4 brake fluid (use DOT 4 only — do not use mineral oil or DOT 5 silicone fluid).

What you need

  • DOT 4 brake fluid (fresh, unopened bottle)
  • Brake-bleeding kit (vacuum pump or hand pump) or clear tubing and a small container
  • Wrenches for bleeder nipples (8 mm or 10 mm typical)
  • Clean rags and isopropyl alcohol
  • Latex or nitrile gloves and eye protection
  • Floor jack and stands or blocks to support the ATV
  • Torque wrench (for caliper hardware if you remove anything)
  • Plastic funnel and syringe (optional for reservoir filling)

Notes specific to the 2019 Textron Alterra 570 XT

  • The Alterra 570 XT uses hydraulic disc brakes front and rear and specifies DOT 4 brake fluid from the manufacturer. Confirm your owner’s manual if in doubt.
  • There are separate procedures for the front and rear hydraulic circuits. The front master cylinder is on the handlebar; the rear master (if equipped) is linked to the foot pedal and reservoir. Inspect the reservoir caps & diaphragms for cracks when servicing.
  • Brake lines on this model run along the swingarm and front A-arms. Inspect flexible hoses at pivot points for wear and rubbing before reassembly.
  • Pad wear on the 570 XT can be uneven if the caliper guide pins seize. Clean and lubricate pins with high-temp brake grease when servicing pads.
  • The 570 XT does not use DOT 5 silicone fluid; mixing fluid types will ruin seals. Always keep the reservoir cap closed and work in a clean environment to avoid contamination.

Preparation

  1. Park the ATV on a level surface, engage parking brake, and block wheels. Remove the key.
  2. Raise the wheels if needed so calipers and bleeder valves are accessible. Support the vehicle securely.
  3. Clean the area around each brake reservoir and the bleeder nipples with isopropyl alcohol.
  4. Remove the reservoir cap(s) and place a clean funnel or filter screen over the opening to keep contaminants out. Do not open a fresh bottle of brake fluid until ready to avoid moisture uptake.
  5. Identify bleed nipples on each caliper. Fit clear tubing over the nipple and place the other end in a container partially filled with clean brake fluid to prevent air re-entry.

Recommended bleeding order

On many ATVs, bleed farthest wheel from the master cylinder first. For the 2019 Alterra 570 XT that typically means:

  • If the system is single-master for all wheels: right rear – left rear – right front – left front.
  • If separate front and rear masters are present: treat front and rear systems separately, bleeding the farthest wheel from each respective master cylinder first.

Bleeding procedure — manual pump or helper

  1. Fill the master cylinder reservoir to the proper level with DOT 4 fluid and keep it topped during the whole procedure.
  2. Start with the first wheel in the recommended sequence. Have an assistant slowly pump the brake lever/pedal 3–5 times and hold pressure on the last stroke.
  3. Open the bleeder nipple about a quarter turn until fluid and air bubble flow into the tubing, then close the nipple. Tell the assistant to release the lever/pedal and then pump again. Repeat until you see clear, bubble-free fluid. Keep the reservoir topped off between cycles.
  4. Once clear fluid emerges, tighten the bleeder nipple to spec (snug, typically about 8–12 Nm; consult torque specs if available) and move to the next wheel.
  5. Repeat for each wheel in sequence. For the front handlebar master, an assistant will need to hold the lever; for the rear, use the foot pedal.

Bleeding procedure — vacuum or pressure bleeder (preferred for single tech)

  1. Attach the vacuum bleeder or pressure kit to the reservoir as manufacturer directs. Keep reservoir capped per kit instructions to prevent air entry.
  2. Work through the bleed sequence. With vacuum, open each bleeder until fluid is clear. With pressure, push fluid through from the reservoir until bubbles stop flowing from each caliper.
  3. Keep reservoir level and prevent overflow. Tighten bleeders when clear fluid is achieved.

Finishing up

  • Top the reservoir to the correct level, reinstall the diaphragm and cap snugly.
  • Clean any spilled brake fluid from painted surfaces immediately using water or isopropyl alcohol; brake fluid damages paint and plastics.
  • Lower the ATV, torque any loosened fasteners, and test brake lever/pedal firmness with the engine off. Brakes should feel firm and consistent.
  • Perform a low-speed test ride in a safe area to confirm braking performance before normal riding.
  • Dispose of old brake fluid per local regulations; don’t pour it down drains.

Troubleshooting & inspection tips

  • Soft or spongy pedal after bleeding usually means air remains in the system or the reservoir level dropped during the process. Repeat bleeding until firm.
  • If one caliper refuses to purge air, remove the caliper and bleed it directly on the bench to free trapped air pockets.
  • Inspect caliper pistons for free movement and boots for tears that allow contamination. Replace seals or calipers if leaking or corroded.
  • Check brake pad thickness and rotor condition while you have the calipers off. Replace pads if below service limit or if glazing/excessive wear is present.
  • If you find contaminated fluid (dark, milky, or gritty), flush the entire system and replace with fresh DOT 4 fluid.

Maintenance interval recommendation

MotoSport recommends replacing brake fluid on the Alterra 570 XT every 1–2 years depending on use and exposure to water or heavy duty conditions. For heavy trail use, salt, or water crossings, check and replace more frequently.

Safety reminder

Brake service is critical to safe operation. If you aren’t confident performing these steps, have a qualified technician at a MotoSport-recommended shop complete the service.

Related Shopping Categories

Shop Brake Fluid for a 2019 Textron Alterra 570 XT ATV.

Shop Brake Bleeders for a 2019 Textron Alterra 570 XT ATV.

Shop Brake Pads for a 2019 Textron Alterra 570 XT ATV.

Shop Brake Lines for a 2019 Textron Alterra 570 XT ATV.

Shop Brake Tools for a 2019 Textron Alterra 570 XT 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.