How to Bleed & Replace Brake Fluid on a 2013 Yamaha Grizzly 550 4X4 POWER STEERING

Shop parts for a 2013 Yamaha Grizzly 550 4X4 POWER STEERING ATV.

This MotoSport-exclusive guide walks you through safely replacing and bleeding the brake fluid on a 2013 Yamaha Grizzly 550 4X4 Power Steering. The Grizzly's braking system is hydraulic and uses a standard DOT brake fluiduse DOT 4 unless your owner’s manual specifies otherwise. IMPORTANT: the power steering system uses a separate hydraulic fluid — do not mix or interchange fluids.

Tools & Supplies

  • DOT 4 brake fluid (fresh, unopened)
  • clear tubing and a brake bleeder bottle or catch jar
  • wrench to fit bleeder nipples (8 mm common)
  • vacuum or pressure bleeder (optional but speeds job)
  • syringe or turkey-baster (for removing old fluid)
  • clean rags & brake parts cleaner
  • jack or ramps and stands (for stable lift)
  • rubber gloves & safety glasses

Safety & Prep

  • Work on a level surface with the engine off and key removed.
  • Protect painted surfaces from brake fluid spills – brake fluid damages paint.
  • Wear gloves & eye protection. Dispose of old fluid per local regulations.

Model Notes for the 2013 Grizzly 550 4X4 Power Steering

  • The Grizzly 550 4X4 PS uses a single front master cylinder for both front brakes and a rear caliper setup depending on trim. Bleeding order and access points mirror typical ATV layouts.
  • Power steering on this model is a separate hydro unit with its own reservoir — work carefully to avoid contamination while servicing brakes.
  • Bleeder nipple sizes are small; take care not to round them off. Use a properly fitting wrench and moderate torque.
  • No ABS to complicate bleeding, but the compact caliper layout can trap air if not bled in the right sequence.

Step-by-Step: Replace & Bleed Brake Fluid

  1. Raise the ATV so wheels are off the ground or at least allow caliper pistons to return freely. Secure with stands.
  2. Clean the master cylinder reservoir cap area. Remove the cap and diaphragm to avoid dirt falling in. Use a clean rag to remove old sludge around the cap.
  3. Remove old fluid from the reservoir using a syringe or turkey-baster until level is low but not empty. Do not let the reservoir run dry if lines contain air; plan to keep it monitored throughout the job.
  4. Top the reservoir with fresh DOT 4 fluid. Keep the cap loose but present to minimize contamination and evaporation.
  5. Locate bleeder nipples on each caliper. Fit clear tubing to the nipple and route into a catch jar partially filled with fresh fluid to avoid drawing air back in.
  6. Follow this common bleeding sequence for the Grizzly: rear right, rear left, front right, front left. If you have only three bleed points, follow the same principle from farthest to nearest relative to the master cylinder.
  7. Method A Two-person pump method: With one person at the master cylinder, the other sits at the brake lever/pedal. Instruct the rider to pump the brake 3-5 times and hold pressure. Open the bleeder nipple briefly to let fluid & air escape, then close before the lever is released. Repeat until clear fluid with no bubbles comes out. After each cycle, top off the reservoir. Continue each wheel until fluid is clear and pedal feels firm.
  8. Method B Vacuum or pressure bleeder (recommended for cleaner single-operator work): Attach the vacuum pump or pressure bleeder per manufacturer instructions. Open the bleeder nipple and draw until you see clear, bubble-free fluid. Proceed through sequence without letting the reservoir drop below the fill line.
  9. Once all corners are clear, ensure the master cylinder reservoir is filled to the correct level and reinstall the diaphragm and cap securely.
  10. Clean all fittings, remove the catch jars and tubing, and torque bleeder screws snugly but do not over-torque. Wipe any spilled fluid off paint and plastic immediately.
  11. Lower the ATV and test the brake lever/pedal firmness with the engine off. Start the engine and re-check pedal feel. Take a short, slow test ride in a safe area to confirm braking performance.

Troubleshooting & Tips

  • Spongy brake pedal after bleeding usually means there is still air in the system or a leak. Recheck bleeder nipples and hose connections.
  • If fluid turns dark quickly after service, check for caliper seal wear or contaminated master cylinder internals that may require component replacement.
  • Replace old rubber hoses that are swollen or cracked — they can trap air and degrade braking feel.
  • Keep a clean work area and cap containers immediately to avoid moisture contamination; DOT fluids are hygroscopic and absorb water.
  • After a full system bleed, double-check that the power steering reservoir and lines were not disturbed or contaminated during the job.

Final Checks

  • Confirm no leaks at calipers, lines, or master cylinder.
  • Verify pedal/lever is firm and consistent; if not, repeat bleeding sequence.
  • Dispose of old fluid responsibly and clean any paint damage with appropriate products.

For OEM replacement parts, seals, hoses, and bleeder tools specific to the 2013 Yamaha Grizzly 550 4X4 Power Steering, use the MotoSport parts page above to find the correct items for your MMY and maintain safe braking performance.

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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.