How to Bleed and Replace Brake Fluid on a 2020 Suzuki King Quad 500AXi 4X4
Shop parts for a 2020 Suzuki King Quad 500AXi 4X4 ATV.
This MotoSport guide walks you through a safe, thorough brake-fluid change and bleed on the 2020 Suzuki King Quad 500AXi 4X4. It is written specifically for owners of the MMY SUZUKI;KINGQD500A;2020 ATV and includes model notes you should know before starting.
What you need
- DOT brake fluid (use DOT 3 or DOT 4 as specified by Suzuki; do not mix with silicone fluid)
- Box end wrench set sized for bleeder screws
- Clear plastic hose and a collection bottle (to capture fluid)
- Tube fitting or wrench to tighten bleed screws
- Rubber gloves, shop rags, and brake-clean spray
- Brake-bleeder kit or vacuum pump (optional but speeds the job)
- Jack and stands or ramps to safely lift the ATV (if wheel removal is required)
- Small funnel and clean container for new fluid
Model notes specific to the 2020 King Quad 500AXi
- The 2020 King Quad 500AXi typically uses hydraulic disc brakes front and rear. Identify the master cylinder reservoir location(s) before you begin — front master cylinder is on the handlebar, rear master may be near the frame or integrated.
- If your machine is equipped with any ABS or electronic brake components, do not perform pressure-bleeding methods that exceed manufacturer-recommended pressures. When in doubt, check with an authorized Suzuki technician.
- Brake-fluid reservoirs on this model are plastic and have internal diaphragms. Keep reservoirs closed and refill quickly to limit moisture absorption; brake fluid is hygroscopic.
- Parts such as bleeder screws, hoses, and reservoir caps can be purchased through MotoSport for quick replacement if corroded or stripped.
Preparation
- Park on level ground, engage park, chock wheels. Remove ignition key.
- Clean around reservoir caps to prevent contamination. Remove cap and diaphragm, leaving the reservoir open only as long as necessary.
- Locate bleeder screws on each caliper. Identify which caliper is farthest from the master cylinder — this will be your starting point.
- If you prefer more access, safely lift the ATV and remove wheels to reach calipers easily.
Bleeding sequence principle
Always bleed from the caliper farthest from the master cylinder and proceed to the closest. This prevents trapped air from migrating back into lines you already bled. For many setups that means: far rear, near rear, right front, left front (confirm actual master-cylinder placement on your machine).
Step-by-step bleed and fluid replacement (traditional two-person method)
- Top the master reservoir with new DOT 3 or DOT 4 fluid. Keep the cap loosely on to limit contamination but allow expansion.
- Attach clear hose to the farthest caliper bleeder screw and route into a bottle partially filled with an inch of fluid (keeps air from re-entering).
- Have an assistant slowly pull the brake lever or pedal to the firm point and hold.
- Open the bleeder screw about a quarter turn. Fluid and air will flow into the bottle. Close the screw before your assistant releases the lever/pedal.
- Repeat pump/open/close cycles until the fluid exiting the hose is clear and free of air bubbles and the lever/pedal feels firm.
- Top the master reservoir regularly during the process to prevent it from running dry.
- Move to the next caliper in the "farthest to nearest" sequence and repeat.
- After all calipers are bled, verify reservoir level and reinstall diaphragm and cap securely. Wipe any spilled fluid from paint and plastic immediately with water and brake-clean; brake fluid will damage finishes.
Single-operator or vacuum-bleeder method
Use a vacuum-bleeder at each bleeder screw to draw fluid until clear, following the same farthest-to-nearest sequence. This reduces the need for an assistant but still requires you to maintain reservoir level and close bleeders before topping off.
What to watch for and troubleshooting
- Persistent soft lever/pedal after thorough bleeding usually indicates a leak, collapsed hose, or a bad master cylinder. Inspect lines, fittings, and caliper seals.
- Stubborn air may hide in ABS modulators or internal hoses; if the system has ABS or an integrated proportioning valve, consult a dealer if simple bleeding fails.
- Replace bleeder screws or hoses if they are rounded, corroded, or leaking.
- Never reuse contaminated brake fluid; dispose of old fluid per local regulations.
Final checks and test
- Ensure all bleeder screws are tightened to hand-plus quarter-turn snug (do not overtighten); wipe dry and torque to OEM spec if known.
- Confirm reservoir level at the recommended mark, reinstall cap and diaphragm.
- Start the ATV and cycle the brakes at low speed in a safe area to bed in new fluid and confirm firm, consistent braking.
- Recheck for leaks after the test ride and inspect bleed screws and line fittings one more time.
Maintenance tips
- Brake fluid should be changed every 1-2 years or per your service schedule to limit moisture buildup.
- Store spare brake fluid sealed and in a cool, dry place — once opened, fluid absorbs moisture quickly.
- Keep a small service kit with spare bleeder caps, hose, and a bottle of fluid for field maintenance.
Following these steps will keep the King Quad 500AXi braking system functioning reliably. If you encounter stubborn air, ABS-related issues, or internal master-cylinder problems, have an authorized technician inspect the system.
Related Shopping Categories
Shop Brake Fluid for a 2020 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Bleeders for a 2020 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Pads for a 2020 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Lines for a 2020 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Tools for a 2020 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.