How to bleed and replace brake fluid on a 2013 Suzuki King Quad 750AXi 4X4 ATV

How to Bleed & Replace Brake Fluid on a 2013 Suzuki King Quad 750AXi 4X4

Shop parts for a 2013 Suzuki King Quad 750AXi 4X4 ATV.

This MotoSport guide shows a practical, safe method to drain, replace and bleed the hydraulic brake system on a 2013 Suzuki King Quad 750AXi 4X4. Follow these steps exactly, use the correct DOT brake fluid, and inspect hardware while you work. If you're uncomfortable with hydraulic systems, stop and have a certified technician finish the job.

What you'll need

• DOT4 brake fluid (confirm reservoir cap label or owner's manual — DOT4 is commonly used)
• Clear plastic hose that fits snugly over the bleeder nipple
• Catch bottle or jar with some clean old fluid inside to check contamination
• Hand or vacuum bleeder (recommended) or a helper
• Wrenches to fit bleeder nipples (open-end wrench)
• Turkey baster or fluid syringe, clean rags, gloves, eye protection
• Floor jack or ramps to lift wheels if needed, torque wrench for caliper bolts

Safety & prep

• Work on a level surface, engine off, key removed. Park on stands or level ground so wheels can rotate if required.
• Brake fluid damages paint & plastics. Protect painted surfaces with rags or plastic sheeting.
• Clean the area around the reservoir cap before opening to avoid contamination.
• Never reuse old fluid once contaminated; discard in accordance with local regulations.

Notes specific to the 2013 King Quad 750AXi

• The 750AXi has independent front braking and a rear brake system; the master cylinder reservoir location may be on the handlebar assembly and/or a separate rear reservoir. Inspect both reservoirs before starting.
• Reservoir capacity is modest — you won't need a full liter, but keep a fresh supply of DOT4 on hand to avoid sucking air into the system while topping up.
• If your machine has any aftermarket carriers, racks, or accessories near the brake lines, verify line routing and clamp condition during service.
• If brake lever feel does not improve after normal bleeding, inspect caliper pistons and pads for corrosion or binding; the King Quad is often used in wet & muddy conditions that can accelerate caliper wear.

Step-by-step: drain, replace & bleed

1. Access & initial drain

• Locate the brake fluid reservoirs. If front and rear have separate reservoirs, service each system separately.
• Clean reservoir cap area. Remove cap and diaphragm; note fluid color and level.
• Siphon or use a turkey baster to remove as much old fluid as possible from the reservoir. Dispose of fluid properly.
• Refill reservoir with fresh DOT4 to the max mark.

2. Identify bleed order

Bleed the caliper furthest from the master cylinder first and finish with the closest. If uncertain, follow this typical order: rear caliper, right front caliper, left front caliper (or farthest-to-nearest pattern based on master location). Repeat for each reservoir if separate systems exist.

3. Prepare each bleeder

• Place the clear hose over the bleeder nipple and submerge the other end in a little clean brake fluid in your catch bottle to prevent air re-entry.
• Have a helper or set up a vacuum/pressure bleeder. If using a hand pump, follow its instructions and maintain reservoir level throughout.

4. Bleeding procedure (manual pump and hold method)

• With a helper: Instruct helper to slowly pump the brake lever/pedal several times and hold pressure.
• Open the bleeder nipple about 1/4 turn to allow fluid and air to flow into the hose; close nipple before helper releases lever/pedal.
• Repeat: pump, hold, open/close bleeder until fluid runs clear and bubble-free from the hose.
• Keep reservoir topped with fresh fluid to avoid drawing air into the master cylinder.
• Work systematically through each caliper in the chosen order.

5. Bleeding with a vacuum or pressure bleeder

• Attach vacuum hose to the bleeder nipple or pressurize the reservoir per tool instructions.
• Open bleeder and run until clear, then close bleeder while still pulling vacuum or pressure to avoid sucking air back in.
• Monitor reservoir level, then refill to max and cap securely.

6. Final checks

• After bleeding all calipers, compress each caliper piston slightly (if applicable) to check pad movement and lever/pedal firmness.
• Torque bleeder nipples and caliper bolts to manufacturer specs if you removed hardware. If you don't have exact specs, snug to manufacturer-recommended values in the manual; avoid over-torquing bleeder screws.
• Wipe any spilled fluid, reinstall reservoir diaphragm and cap tightly.
• Test brake lever and pedal feel at rest. Perform a low-speed safety test in a clear area to confirm braking performance before riding normally.

Troubleshooting

• Spongy lever after bleeding: repeat bleed sequence, ensuring reservoir never drops low enough to ingest air.
• Persistent soft brake or dragging caliper: inspect caliper pistons and slides for corrosion; clean, lubricate with appropriate brake grease, or replace seals/pistons as needed.
• Contaminated fluid (dark, milky): complete fluid replacement and consider flushing ABS modulator if equipped or consult a technician.

Maintenance tips & MotoSport recommendations

• Replace brake fluid every 1-2 years or sooner if the quad is used heavily in wet/muddy conditions.
• Always use fresh DOT4 from a sealed container; do not mix DOT3/DOT4 unless manufacturer allows it (check the reservoir cap/owner manual).
• Inspect lines, clamps and hose routing for abrasion or cracking; replace any brittle lines during the fluid service.
• Keep a small service kit with spare bleeder caps, clean hose and a spare bottle of DOT4 in your tool bag for field maintenance.

Following this MotoSport procedure will restore brake system integrity on your 2013 Suzuki King Quad 750AXi 4X4 and keep your ride safe & responsive. If any step reveals major corrosion, seized calipers, or internal master cylinder issues, consult a professional mechanic.

Related Shopping Categories

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Shop Brake Lines for a 2013 Suzuki King Quad 750AXi 4X4 ATV.

Shop Brake Tools for a 2013 Suzuki King Quad 750AXi 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.