How to Bleed & Replace Brake Fluid on a 2017 Suzuki King Quad 750AXi 4X4 Power Steering

Shop parts for a 2017 SUZUKI KINGQD750P ATV.

This MotoSport-exclusive guide covers safely flushing and bleeding the hydraulic brakes on the 2017 Suzuki King Quad 750AXi 4X4 Power Steering (MMY KINGQD750P). Follow these steps exactly, use OEM-quality parts when possible, and never reuse contaminated fluid.

What you need

  • DOT-compatible brake fluid as specified in your owner’s manual (confirm DOT 3 or DOT 4 for your exact MMY; do not mix DOT 5)
  • Clear plastic tubing to fit bleed nipples
  • Clean catch bottle with a one-way valve or a screw-top cap
  • Brake-fluid syringe or turkey baster for reservoir cleaning
  • 10mm or appropriate wrench for bleed nipples
  • Torque wrench for caliper/banjo bolts (refer to service manual torque specs)
  • Shop rags, gloves, safety glasses, and a container for old fluid
  • Jack or ramps and stands to access wheels (if needed)
  • Optional: vacuum/pressure brake bleeder for one-person operation

Model-specific notes for the King Quad 750AXi

  • The King Quad 750AXi uses separate calipers for front and rear. The master cylinder reservoir is located on the handlebar area; ensure you can access and see fluid level while bleeding.
  • The power steering unit and its fluid reservoir are separate from the brake system. Do not confuse the reservoirs.
  • There is no factory ABS on this model year; bleeding is straightforward caliper-to-master-cylinder plumbing.
  • Brake lines on this ATV are routed near steering components and frame points that can be stressed during articulation. Inspect lines and banjo fittings carefully for cracks, rubbing, or corrosion while you have the wheels off.
  • Use new copper crush washers on any banjo bolt removal. Reuse can cause leaks and air ingress.

Preparation

  • Park on level ground, set parking brake, and remove the key. Block wheels.
  • Clean reservoir cap area to prevent contaminants entering the system. Remove cap and diaphragm carefully; cover reservoir mouth with a clean rag to limit debris.
  • Raise wheels as needed so calipers are below the master cylinder level. This aids bleeding and prevents air pockets.
  • Inspect brake pads, rotors, lines, banjo bolts, and bleed nipples for corrosion or damage. Replace suspect parts before bleeding.

Two accepted bleeding methods

1) Two-person pump-and-hold (recommended if no pressure bleeder)

  1. Top off the master cylinder reservoir with fresh DOT fluid. Keep the cap loosely set to avoid contamination but prevent spills.
  2. Begin with the caliper farthest from the master cylinder. For most King Quads that means: right rear, left rear, right front, left front. Confirm routing visually and adjust sequence if necessary.
  3. Fit clear tubing over the bleed nipple and insert the other end into a catch bottle partially filled with fresh fluid to prevent air backflow.
  4. One person pumps the brake lever/pedal to build firm pressure and holds it. The other person opens the bleed nipple about 1/4 turn until fluid flows and air bubbles escape, then closes the nipple before the lever/pedal is released. Repeat until only clean fluid with no bubbles appears.
  5. Keep the reservoir level above the minimum at all times during the process to prevent drawing air back into the system.
  6. Work through the remaining calipers in sequence, always finishing with the master cylinder side closest to the reservoir.
  7. After all calipers are bled, top the reservoir to the correct level, reinstall cap and diaphragm, torque banjo/bleed fittings to spec, and clean any spilled fluid immediately.

2) Single-person pressure/vacuum bleeder

  1. Attach the pressure bleeder to the master cylinder per tool instructions and pressurize to the recommended PSI (often 5-15 psi). Alternatively, attach a vacuum pump to each bleed nipple in turn.
  2. Open bleed nipple and allow fluid to flow until clear and bubble-free, then close nipple before moving to next caliper. Maintain reservoir level with fresh fluid during the entire procedure.
  3. Follow the same caliper sequence: farthest to nearest.

Finishing steps and checks

  • Once bleeding is complete, pump the brake lever/pedal to confirm firm, consistent lever feel. Soft or spongey feel indicates remaining air; repeat bleeding.
  • Tighten bleed nipples and any banjo bolts to proper torque. Replace any crush washers removed.
  • Wipe all surfaces clean of brake fluid. Brake fluid will damage paint and plastic; rinse with water if contact occurs and clean immediately.
  • Properly dispose of old brake fluid at a recycling center. Do not pour down drains.
  • Test ride slowly in a safe area, checking braking force and pedal feel; re-inspect for leaks after the test ride.

Troubleshooting

  • If bubbles persist: check for loose bleed nipples, cracked hoses, or leaking master cylinder seals. Replace faulty components before repeating the bleed.
  • If lever travel is excessive after bleeding: check pad wear and caliper piston condition; worn pads or a seized piston can mimic air in the system.
  • If you must remove banjo bolts at the caliper or master cylinder, always use new crush washers and re-torque to spec to avoid leaks.

Maintenance tips specific to the King Quad 750AXi

  • Inspect brake hoses at each service interval for chafing near steering arms and frame mounts unique to the King Quad chassis geometry.
  • Because this model is used in work and utility applications, inspect for fluid contamination after heavy-mud or water use; replace fluid more frequently if frequent water crossings occur.
  • If your rig is fitted with aftermarket winches or accessories, verify that wiring or lines have not been routed across brake components causing wear or heat exposure.

Following this MotoSport guide will restore correct brake function when performed carefully. If you find persistent internal master cylinder leakage, caliper seizure, or other faults, consult a qualified technician and replace components per the service manual.

Related Shopping Categories

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Shop Brake Lines for a 2017 SUZUKI KINGQD750P ATV.

Shop Brake Tools for a 2017 SUZUKI KINGQD750P 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.