How to Bleed and Replace Brake Fluid on a 2016 Suzuki King Quad 750AXi 4X4 POWER STEERING
Shop parts for a 2016 SUZUKI KINGQD750P ATV.
This MotoSport guide walks you through a complete, model-specific brake fluid replacement and bleeding procedure for the 2016 Suzuki King Quad 750AXi 4X4 POWER STEERING (KINGQD750P). Follow these steps carefully to restore firm brake feel, prevent contamination, and protect the ATV’s finish and hydraulic components.
What you need
- Fresh DOT 4 brake fluid (clean, sealed container)
- Clear plastic tubing to fit bleed nipples
- Clean catch bottle and container for old fluid
- Brake bleeder wrench or appropriate box wrench
- Turkey baster or fluid transfer syringe (for reservoir)
- Assistant (recommended) or one-way vacuum/pressure bleeder
- Clean rags and isopropyl alcohol for cleanup
- Latex or nitrile gloves and safety glasses
- Torque wrench for caliper bolts (if removing calipers)
Model notes — what owners of the King Quad 750AXi should know
- The King Quad 750AXi uses hydraulic disc brakes for front and rear; there is no factory ABS on this MMY model to interfere with bleeding, but always confirm your specific build.
- The brake fluid reservoir is shared for the front circuit and accessible under the right-hand plastic in the handlebar area. Don’t confuse this with the hydraulic power steering reservoir (separate) — do not mix fluids.
- Use DOT 4 fluid unless the owner’s manual specifies otherwise; DOT 4 provides higher boiling resistance appropriate for utility riding conditions.
- Brake lines and bleed nipples are exposed to mud and corrosion on ATVs; clean all fittings before opening to prevent contamination.
- If calipers or lines are replaced, always inspect for contamination and replace fluid immediately after repairs.
Safety first
- Work on a level surface with the engine off and key removed.
- Chock wheels and secure the ATV on stands so wheels can rotate freely during bleeding.
- Never allow brake fluid to contact painted surfaces — it will damage plastic and paint. Wipe any spills immediately with a clean rag and isopropyl alcohol.
Preparation
- Clean around the master cylinder cap and reservoir to prevent dirt entering the system.
- Remove the cap, diaphragm, and reservoir cap insert. Siphon or turkey-baste out most old fluid, leaving a small amount to cover the pickup. Keep the reservoir topped during the procedure to avoid air ingress.
- Locate bleed nipples on each caliper: right front, left front, and rear. Fit clear tubing onto each nipple and route to a catch bottle partially filled with old fluid to avoid drawing air back in.
- Decide on a bleeding method: manual two-person pump, one-way vacuum/pressure bleeder, or gravity bleed. Manual or pressure methods are preferred for reliable results on ATVs with short lines.
Bleeding order and rationale
Recommended sequence for the King Quad 750AXi: rear caliper, right front caliper, left front caliper. This order follows the typical hydraulic circuit layout and helps purge air most efficiently.
Step-by-step — manual two-person method
- Have your assistant repeatedly press the brake pedal slowly and hold it down. Do not allow the pedal to return while the bleed nipple is open.
- Crack the rear caliper bleed nipple about a quarter to a half turn. Fluid and air will flow into the clear tubing. When the flow slows, close the nipple. Instruct the assistant to release the pedal only after the nipple is closed.
- Repeat until clear, bubble-free fluid emerges and the pedal feels firm. Keep the reservoir topped with fresh fluid throughout.
- Move to the right front caliper and repeat the pump-hold-open-close cycle until no air is visible in the line.
- Finish with the left front caliper the same way. Check pedal firmness and travel between caliper bleeds and after the final bleed.
Step-by-step — vacuum or pressure bleeder method
- If using a vacuum pump, attach tubing to each bleed nipple in sequence and draw fluid until clear, maintaining reservoir level.
- If using a pressure bleeder on the master cylinder reservoir, pressurize the reservoir per tool instructions and open each bleed nipple in the recommended order until clear fluid flows.
- Either method will speed the job and reduce the need for an assistant, but still monitor reservoir level carefully to prevent air ingestion.
Flushing the system (full fluid replacement)
- To fully replace fluid, siphon old reservoir fluid, then add fresh DOT 4. Bleed each caliper until new fluid runs clear and the reservoir shows only new fluid.
- Repeat fill-and-bleed cycles until the fluid color and clarity remain clean and free of debris.
Final checks and cleanup
- Tighten all bleed nipples to their snug torque spec (use a snug, controlled fit; avoid stripping). If unsure, tighten to a firm hand-tool level and test for leaks under pressure.
- Replace the reservoir diaphragm and cap securely. Wipe down any spilled fluid from paint and plastic immediately.
- Test brake pedal feel with the engine off, then start engine and test again at low speed in a safe area to confirm braking performance.
- Properly dispose of old brake fluid in accordance with local regulations.
Troubleshooting
- Spongy pedal after bleeding: repeat bleeding cycle, paying attention to reservoir level and bleed order. Consider removing calipers to top up pistons if trapped air persists.
- Persistent soft pedal with no visible air: inspect master cylinder, flexible lines, and calipers for internal leaks or failure; replace components as needed.
- If brake performance is inconsistent, inspect pads, discs, and caliper pistons for contamination or sticking.
Maintenance tips specific to the King Quad 750AXi
- Check brake fluid annually and replace every 1–2 years depending on use and exposure to water and muck.
- After heavy water crossings or mud riding, inspect bleed nipples and clean before opening to prevent contamination.
- Monitor the hydraulic power steering system separately; its fluid and reservoir are different from the brake system and must never be mixed.
Performing a careful bleed and fluid replacement restores braking reliability and prolongs the life of the King Quad’s hydraulic components. If you encounter mechanical issues beyond routine bleeding, consult a qualified technician or a MotoSport service partner for diagnosis and repair.
Related Shopping Categories
Shop Brake Fluid for a 2016 SUZUKI KINGQD750P ATV.
Shop Brake Bleeders for a 2016 SUZUKI KINGQD750P ATV.
Shop Brake Pads for a 2016 SUZUKI KINGQD750P ATV.
Shop Brake Lines for a 2016 SUZUKI KINGQD750P ATV.
Shop Brake Tools for a 2016 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.