How to Bleed & Replace Brake Fluid on a 2019 Textron Alterra 570 EPS

Shop parts for a 2019 Textron Alterra 570 EPS ATV.

This step-by-step MotoSport guide shows how to safely replace and bleed the brake fluid on a 2019 Textron Alterra 570 EPS. Follow these instructions exactly, use appropriate protective gear, and consult your OEM owner’s manual for any model-specific cautions. If you’re not comfortable working on brakes, have a trained technician do the job.

What you’ll need

  • DOT 4 brake fluid (verify cap or owner’s manual — do not mix fluid types)
  • Clear plastic tubing that fits snugly over each bleed nipple
  • Clear catch bottle or jar (marked for hazardous waste)
  • Brake bleeding kit or handheld vacuum pump (optional but recommended)
  • Socket/box wrench set for wheel removal and bleed nipple wrench (typically 8 mm)
  • Clean rags, gloves, safety glasses
  • Jack or ramps and stands to safely lift & support the ATV
  • Torque wrench (for wheel fasteners if removed)

Model notes for the 2019 Textron Alterra 570 EPS

  • The reservoir is located on the master cylinder at the handlebars for the front brakes and at the rear master cylinder for the rear brake circuit if equipped with separate reservoirs. Confirm locations before starting.
  • The Alterra 570 EPS uses a hydraulic brake system without factory ABS. Verify DOT rating stamped on the reservoir cap — Textron commonly specifies DOT 4 for this model, but always check the cap or manual before topping off.
  • Electronic Power Steering (EPS) does not affect brake bleeding, but avoid electrical component contamination with fluid.
  • Some model years have a combined master cylinder for front/rear; confirm whether your unit uses a combined or separate circuits so you can follow the correct sequencing below.

Preparation

  1. Park on a level surface, engage park/gear, and block the wheels. Disconnect the negative battery terminal to reduce accidental starts.
  2. Raise and secure the ATV so wheels can turn freely if you need to operate the brake pedal. Use jack stands or ramps rated for off-road vehicles.
  3. Clean the reservoir cap area so no dirt falls into the fluid. Remove the cap and diaphragm; inspect and remove old fluid from the reservoir with a syringe or turkey baster until it’s mostly empty. Wipe the reservoir clean if contaminated.
  4. Top the reservoir with fresh DOT 4 fluid to the MAX line. Keep the cap loosely installed between steps to minimize contamination while preventing debris entry.

Bleeding sequence — general rule

Always start with the wheel farthest from the master cylinder and move closer. For most 4WD ATVs that means: rear passenger, rear driver, front passenger, front driver. If your master cylinder location or setup differs, use the farthest-to-closest rule.

Manual two-person bleed method

  1. Attach clear tubing to the bleed nipple on the first caliper and route the other end into the catch bottle partially filled with clean brake fluid to avoid drawing air back in.
  2. Have a helper slowly depress the brake lever or pedal to about 3/4 travel and hold it. Open the bleed nipple slightly to let fluid and air escape into the tubing. Close the nipple before the helper releases the lever. Do not let the reservoir drop below the MIN mark; top up as needed.
  3. Repeat the depress-open-close cycle until fluid runs clear with no visible air bubbles. Then tighten the bleed nipple to the proper snugness. Wipe any spilled fluid immediately — brake fluid damages paint and plastics.
  4. Move to the next wheel using the same procedure. Refill the reservoir between wheels, keeping fluid level at or near MAX to prevent air ingress.

Single-person vacuum or pressure method

  1. Attach the clear tubing from each bleed nipple to the catch bottle; connect the vacuum pump or pressure bleeder per the tool’s instructions.
  2. Activate the tool and open the bleed nipple; allow the machine to draw fluid until clear and bubble-free. Close the nipple before shutting the tool off. Work wheel-to-wheel in the farthest-to-closest sequence.
  3. Monitor and maintain reservoir fluid level during the procedure.

Post-bleed steps

  • Ensure bleed nipples are fully closed and wipe dry. Replace and tighten reservoir cap.
  • Lower the ATV, reinstall any wheels removed, and torque lug nuts to factory specification.
  • Reconnect the battery if disconnected. With the ATV on the ground, pump the brake lever/pedal several times to confirm a firm, consistent feel. If spongy, repeat bleeding steps.
  • Road-test at low speed in a safe area to verify braking performance. Avoid heavy braking until the system is confirmed and any wetted pads are bedded properly.
  • Dispose of old brake fluid per local hazardous-waste regulations.

Tips & cautions specific to this model

  • Avoid getting brake fluid on painted surfaces or plastic body panels on the Alterra 570 EPS — the factory plastics stain and can be damaged. Immediately rinse any spills with water and wipe clean.
  • If you find dark, contaminated fluid or metallic particles, inspect calipers and lines for internal wear or corrosion. MotoSport recommends servicing calipers and replacing lines if contamination is severe.
  • Check master cylinder and reservoir seals for cracking during fluid service; replace any degraded components to prevent future leaks or air ingress.
  • If your Alterra has an integrated parking brake linkage or drum-style rear, consult the manual for bleed access and any special procedures to avoid parking-brake cable damage.

When to seek professional service

Have a qualified technician inspect the system if you encounter continued sponginess after multiple bleed attempts, visible fluid leaks, seized calipers, or internal contamination. Proper brake performance is critical for safety.

MotoSport recommends routine brake-fluid replacement every two years or sooner if the fluid appears dark or contaminated. Keeping the Alterra 570 EPS brake system fresh helps ensure reliable stopping, longer component life, and safer rides.

Related Shopping Categories

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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.