How to Bleed & Replace Brake Fluid on a 2011 Suzuki King Quad 500AXi 4X4

Shop parts for a 2011 Suzuki King Quad 500AXi 4X4 ATV.

This MotoSport.com guide walks you through safely replacing and bleeding the brake fluid on a 2011 Suzuki King Quad 500AXi 4X4. Procedures cover both front and rear systems, required tools, fluid selection, and model-specific notes for this MMY ATV.

What you need

  • DOT 4 brake fluid (Suzuki recommends DOT 4 for the King Quad 500AXi)
  • Clear 1/4" plastic tubing
  • Clean catch bottle (marked for used brake fluid)
  • Assistant (recommended) or a vacuum/pressure bleeder
  • Wrenches to fit bleed nipples (typically 8 mm)
  • Turkey baster or syringe to remove old fluid
  • Clean rags, gloves, eye protection
  • Service manual or phone for reference to reservoir locations

Model notes for the 2011 King Quad 500AXi

  • The King Quad has separate master cylinders for the front (handlebar) and the rear (foot pedal). Treat them as two independent systems.
  • Brake fluid reservoir caps are plastic and can stripturn gently and clean the cap seal area before opening.
  • Avoid getting brake fluid on plastics, painted surfaces, or rubber trim – it is corrosive to paint and some plastics. Wipe spills immediately and rinse with plenty of water if necessary.
  • If your quad has ABS or combined braking options on different trims, consult the service manual before using pressure bleeders. The base 500AXi simple hydraulic system is safe to bleed conventionally.

Preparation

  • Park on level ground, engage park brake (if equipped), and block wheels.
  • Clean around reservoir caps to prevent contamination before opening.
  • Remove as much old fluid from each reservoir as practical with a turkey baster; do not allow the reservoir to run dry during the bleed process.
  • Top reservoirs with fresh DOT 4 fluid to just below the max line to avoid overflows during cycling.

Bleeding strategy — general rule

Always start bleeding the caliper farthest from its master cylinder and work toward the closest. Because the King Quad has separate front and rear masters, perform the sequence separately for each system.

Bleeding the front brakes

  1. Identify the front master cylinder (handlebar area). Locate both front calipers and their bleed nipples.
  2. Attach clear tubing to the bleed nipple of the caliper farthest from the handlebar master cylinder; submerge the other end in clean fluid in your catch bottle to avoid air re-entry.
  3. Have an assistant slowly pump the front brake lever several times and hold it depressed. Open the bleed nipple about a quarter turn to let fluid and air escape, then close it before the lever is released. Repeat until no bubbles appear and the lever feels firm.
  4. Top off the front reservoir as needed during the process to prevent it from running dry.
  5. Repeat for the nearer front caliper until the lever is firm and bubble-free.

Bleeding the rear brake

  1. Locate the rear master (pedal) reservoir and the rear caliper bleed nipple.
  2. Attach tubing to the rear bleed nipple and place the free end in a catch bottle partially filled with clean fluid.
  3. Have an assistant firmly press and hold the rear brake pedal. Open the bleed nipple slightly, allow fluid/air to escape until flow is clear without bubbles, then close the nipple before releasing the pedal. Repeat until firm.
  4. Keep the rear reservoir topped off during the procedure.

Alternative: Vacuum or pressure bleeder

If using a vacuum or pressure bleeder, follow the bleeder tool manufacturer instructions and the same farthest-to-closest sequence. Do not exceed recommended pressure limits for DOT fluid systems. Avoid pressurizing reservoirs above a few psi if unsure.

Flushing system & replacing fluid

  • Continue bleeding until new fluid flows clean and free of bubbles from every bleed nipple. Replace all fluid in each system incrementally by topping with fresh DOT 4 and bleeding until the reservoir fluid appears new and clear.
  • After final bleed, tighten bleed nipples to spec snugness — avoid over-torquing plastic or soft metal nipples. Wipe all fittings clean.
  • Ensure reservoir caps are reinstalled with their seals and tightened securely.

Final checks

  • Verify pedal and lever firmness under load and at rest. If sponginess remains, repeat bleeding.
  • Inspect lines, fittings, and calipers for leaks. Test ride slowly in a safe area to confirm braking performance.
  • Properly dispose of old brake fluid at a hazardous-waste facility or according to local regulations.

Maintenance tips specific to the King Quad 500AXi

  • Bleed and replace brake fluid every 1-2 years or sooner if brake feel deteriorates or the fluid appears dark or contaminated.
  • Check master cylinder reservoir seals and replace if brittle or leaking; these are inexpensive insurance against contamination and air ingress.
  • If calipers have seized pistons or sticky sliders, rebuild or replace calipers rather than continuous bleeding – contaminated or corroded components cause recurring issues.

Perform the procedure with care, using fresh DOT 4 fluid and ensuring no air remains in the lines. If you encounter persistent problems or ABS/combined-brake complications, consult a qualified technician or your service manual.

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Shop Brake Lines for a 2011 Suzuki King Quad 500AXi 4X4 ATV.

Shop Brake Tools for a 2011 Suzuki King Quad 500AXi 4X4 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.