How to Bleed & Replace Brake Fluid on a 2017 Yamaha Grizzly 700 4X4 EPS – MotoSport Pro Guide

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This MotoSport-exclusive procedure walks you through replacing contaminated brake fluid and bleeding the front and rear brake systems on the 2017 Yamaha Grizzly 700 4X4 EPS. The Grizzly uses separate master cylinders for front (handlebar lever) and rear (foot pedal) brakes, so bleed and refill each circuit independently. Recommended fluid is DOT 4 brake fluid. Work on a cool machine in a clean, well-ventilated area and keep rags handy to protect painted plastics and metal.

Tools & supplies

  • DOT 4 brake fluid (new, unopened container)
  • Bleeder kit or clear tubing and catch bottle
  • Hand vacuum pump or pressure bleeder (optional but speeds process)
  • Combination wrenches or bleed-wrench sized to bleeder nipples
  • Small Phillips or flat screwdriver for reservoir caps
  • Clean rags and isopropyl alcohol or brake parts cleaner
  • Latex or nitrile gloves and safety glasses
  • Torque wrench (for reassembly if removing components)

Preparation

  • Park on level ground, engage parking brake, and secure the machine.
  • Remove front racks/panels as needed to access front calipers and reservoirs.
  • Clean around the master cylinder reservoir caps and bleeder screws to prevent contamination.
  • Inspect hoses, lines, and calipers for leaks, cracks, or excessive wear. Replace any damaged components before bleeding.

General bleeding principles

  • Work one brake circuit at a time: front circuit (both front calipers) & then rear circuit (rear caliper).
  • Always keep the master cylinder reservoir at least half full to prevent air ingestion.
  • Use the farthest caliper from the master cylinder first, then the nearest. For the Grizzly front system, start with the side farthest from the master reservoir.
  • Dispose of old brake fluid responsibly; it damages paint and plastics.

Step-by-step: Front brake circuit

  1. Locate the front brake master cylinder reservoir on the handlebar. Clean the cap area and remove the cap and diaphragm carefully.
  2. Inspect fluid color. If dark or contaminated, siphon out old fluid from the reservoir and top with fresh DOT 4.
  3. Identify the bleeder nipples on the front calipers (both left & right). Fit clear tubing over the bleeder and route into a catch bottle partially filled with clean fluid to prevent air return.
  4. Have an assistant slowly pump the front brake lever several times and hold it depressed, or use a vacuum/pressure bleeder per manufacturer directions.
  5. With the lever held, open the bleeder nipple slightly to let fluid and air escape. Close the bleeder, then instruct the assistant to release the lever. Repeat until clear fluid with no bubbles flows and lever feels firm.
  6. Perform the sequence for the farthest caliper first, then the next. Replenish the reservoir frequently to avoid running dry.
  7. After both front calipers are clear, tighten bleeder nipples to proper snugness (use correct wrench size; do not over-torque). Replace the reservoir diaphragm and cap.

Step-by-step: Rear brake circuit

  1. Locate the rear brake master cylinder (foot pedal) reservoir. Clean the area, remove the cap, and top with fresh DOT 4 if needed.
  2. Attach clear tubing to the rear caliper bleeder and route to catch bottle.
  3. Operate the rear brake lever/pedal with an assistant or use a vacuum pump. Open the bleeder while the pedal/lever is depressed, then close before release. Repeat until fluid runs clear and bubble-free.
  4. Keep reservoir filled throughout. Tighten bleeder nipple when finished and reinstall reservoir cap.

Optional: Reverse or pressure bleeding

  • Vacuum/pressure bleeders reduce time and effort and are especially useful if you do this alone. Follow the tool manufacturer instructions and keep reservoir topped.

Final checks

  • Ensure all bleeder screws are tightened securely and caps are installed.
  • Check brake lever and pedal travel & firmness at rest and under load. There should be firm resistance and no sponginess.
  • Inspect for leaks at calipers, lines, and master cylinders.
  • Wipe any spilled fluid from painted surfaces immediately and touch-up if necessary.
  • Test ride slowly in a safe area to confirm braking performance before full use.

Notes specific to the 2017 Yamaha Grizzly 700 4X4 EPS

  • The Grizzly 700 uses separate front and rear systems; treat them independently to avoid mixing circuits.
  • The brake reservoirs are compact and can be easy to overfill; top gradually and monitor fluid level while bleeding.
  • Stock caliper bleeder nipple locations are accessible with minimal panel removal, but remove obstructing racks if necessary for safe access.
  • If your Grizzly has aftermarket hydraulic accessories or larger master cylinders, recheck pedal/lever travel and proportioning after fluid replacement.
  • Regularly inspect hoses at suspension flex points on a Grizzly used in aggressive or utility work, as rubbing/heat can accelerate hose wear leading to contamination or failure.

Troubleshooting

  • Persistent spongy brakes after bleeding: recheck for air in the line, damaged master cylinder seals, or collapsed brake hose. Replace suspect components.
  • Brake drag after bleeding: ensure caliper pistons are free, bleeder screws fully closed, and master cylinder pushrod freeplay adjusted per service spec.

Follow this MotoSport guide each time you replace brake fluid or suspect air contamination. Properly bled brakes keep your Grizzly safe and responsive in every condition.

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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.