How to Bleed and Replace Brake Fluid on a 2018 Suzuki King Quad 500AXi 4X4
Shop parts for a 2018 Suzuki King Quad 500AXi 4X4 ATV.
This MotoSport guide gives a step-by-step, model-aware procedure for replacing and bleeding brake fluid on a 2018 Suzuki King Quad 500AXi 4X4. Follow these steps carefully & always consult your owner's manual for fluid specification and torque values. If you’re unsure, MotoSport can help source the correct parts and supplies.
Notes specific to the 2018 King Quad 500AXi
- The 2018 King Quad uses a sealed hydraulic brake system with separate master cylinders for the front and rear circuits; bleed each circuit separately.
- Use only the brake fluid type specified in the Suzuki owner’s manual. Do not mix different fluid types.
- The brake fluid reservoir caps can be small and the reservoirs are translucent plastic; clean the area before opening to prevent contamination.
- Brake lines on ATVs are exposed to mud & rocks. Inspect hoses, boots, and banjo fittings for damage before refilling.
- Wheel layout varies by model trim; the correct bleed sequence is the wheel farthest from the master cylinder first, working toward the closest.
Tools & Supplies
- Manufacturer-specified brake fluid (check manual)
- Clear hose – 3/16" or 1/4" depending on bleeder nipple fit
- Catch bottle or container
- Wrench for bleeder nipples (open-end)
- Syringe or vacuum pump (optional but recommended)
- Clean rags, gloves, safety glasses
- Jack or ramp and stands to safely lift the ATV
- Brake cleaner and small brush for cleaning fittings
Safety Precautions
- Work on a level surface and secure the ATV so wheels can turn freely when needed.
- Brake fluid damages paint and plastics – wipe spills immediately and avoid skin contact.
- Never let the master cylinder reservoir run dry while bleeding — air in the system will require re-bleeding.
- Dispose of used fluid according to local hazardous-waste rules.
Preparation
- Park the ATV, turn off the engine, set the parking brake, and remove the key.
- Clean each reservoir cap area and remove caps. If reservoirs are dirty, wipe clean to avoid contamination.
- Top the reservoir(s) to the proper level with fresh fluid but do not overfill.
- Identify the bleed nipples on each caliper or wheel cylinder and loosen their dust caps.
Bleeding Procedure — Basic Method (Helper)
- Start with the circuit farthest from the master cylinder. If uncertain, use the general sequence: farthest rear, nearest rear, farthest front, nearest front.
- Attach a clear hose to the bleeder nipple and route the hose into a catch bottle partially filled with fresh fluid to prevent air re-entry.
- Have your helper slowly depress the brake lever or pedal several times and then hold it down.
- Open the bleeder nipple about a 1/4 turn. Fluid and air will flow into the bottle. Close the nipple before the helper releases the lever/pedal.
- Repeat the pump/open/close cycle until the fluid exiting the hose is clear and free of bubbles.
- Top off the reservoir after each wheel to prevent it from running dry.
- Move to the next wheel in the sequence and repeat.
- Once finished, tighten bleeder nipples to snug (consult manual for torque if needed), replace dust caps, and reinstall reservoir caps securely.
- Test the brake lever/pedal for firm feel before riding. If spongy, repeat bleeding until firm.
Bleeding Procedure — Vacuum or Pressure Method
- Vacuum pump: Attach the pump hose to the bleeder nipple, pull vacuum while watching for air-free fluid, then close nipple before releasing vacuum.
- Pressure kit: Pressurize the reservoir per kit instructions and crack each bleeder until fluid runs clear, then close.
- These methods allow one-person operation and reduce the risk of drawing air back into the system.
Tips & Troubleshooting
- If air persists, check hoses, master cylinder seals, and caliper pistons for leaks or damage. Replace worn components.
- Stubborn air pockets can sometimes be coaxed out by elevating the reservoir higher than calipers and cycling the lever/pedal repeatedly.
- Avoid squeezing caliper pistons too far out; protect seals and boots during the process.
- If the brake lever/pedal remains soft after multiple bleeding attempts, inspect the master cylinder internals — rebuilding or replacing may be required.
Post-Service Checks
- Verify no leaks at bleeder nipples, banjo bolts, or lines after test rides.
- Confirm brake function at low speed in a safe area before riding aggressively.
- Record the fluid change date and mileage; routine fluid replacement keeps the system reliable.
For OEM replacement parts, master cylinder components, bleeder screws, seals, and the correct brake fluid for your 2018 Suzuki King Quad 500AXi 4X4, MotoSport stocks parts and supplies tailored to your MMY. Keep maintenance records and consult your manual for exact specifications when available.
Related Shopping Categories
Shop Brake Fluid for a 2018 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Bleeders for a 2018 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Pads for a 2018 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Lines for a 2018 Suzuki King Quad 500AXi 4X4 ATV.
Shop Brake Tools for a 2018 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.