Fuel Line Removal and Fitting on a 2013 Suzuki KingQuad 500AXi 4x4 Power Steering

Shop parts for a 2013 Suzuki King Quad 500AXi 4X4 POWER STEERING ATV.

There is one step on this job that cannot be skipped or improvised, and it happens before a single clamp is loosened. The 2013 KingQuad 500AXi with power steering is a fuel–injected machine, so the supply hose holds pressure long after the engine stops. Bleed that pressure properly and the rest of the work is ordinary wrenching. Ignore it and the first fitting you open will make the point for you.

Relieving Pressure on an Injected KingQuad

The AXi designation means Suzuki electronic fuel injection, with a pump mounted inside the tank feeding the throttle body through a pressurized hose. There is no petcock under the tank to rotate off and no float bowl to drain, so the sequence is electrical: pull the fuel pump fuse or relay, crank the engine until it stalls on its own, switch the key off, then disconnect the battery negative terminal. Line–clamping pliers cover any low–pressure section where a valve would otherwise be handy. That combination brings the circuit down to near zero and keeps the job under control.

Working the Old Hose Off Both Fittings

Remove the seat and the side plastics to reach the tank connection, then follow the hose down to the throttle body so both endpoints are accounted for. Position a catch pan and wrap a rag around each joint as you open it, since fuel remains in the hose regardless of pressure.

Slide clamps well clear of the fittings before touching them. If a locking quick–connect is fitted at the pump plate, press both tabs squarely and pull the connector straight off; sideways prying is what cracks a collar that has spent a decade baking under the bodywork. Hose that has varnished onto a barb usually breaks loose with a gentle rotating motion, and one that truly refuses should be slit lengthwise with a sharp blade and peeled away. Sacrificing a hose you are discarding protects the fitting you are keeping. Track the routing as it comes out, because this selectable 4x4 carries the line past front differential hardware and additional frame clearance points, and the power steering assist unit near the steering shaft narrows the space you have to work in.

What Wore the Hose Out

Fuel hose ages from heat and chemistry rather than mileage. Every heat cycle from the 493cc single pulls more of the softening compound out of the rubber wall, so the hose stiffens and eventually cracks at its tightest bend, and dry regional air accelerates that hardening by continuously drawing moisture out of the material.

Ethanol–blended gasoline handles the inside of the same hose. Alcohol attracts water and slowly degrades the liner, and fuel that stands unused leaves gum and varnish behind at the fittings. Because one process hardens the exterior while the other softens the interior, appearance alone is a poor judge of remaining life, and a 2013 machine has accumulated more than enough calendar time to justify replacement.

How a Bad Line Announces Itself

  • A fuel puddle or a repeating damp shadow under the tank area after the quad has been parked
  • A persistent gasoline smell, which on a pressurized system often arrives before any visible drip
  • Cracks that open when you flex a bend, plus chalkiness or swelling on the surface
  • Hardened hose that no longer squeezes flat between your fingers
  • Bogging under load, a lean stumble on hard throttle, or hesitation that mimics a nearly dry tank

Supplies and Handling Gasoline Sensibly

Have gloves, eye protection, injection–rated hose in the correct inside diameter, new clamps of the matching style, a release tool if a locking coupler is present, line–clamping pliers, an approved fuel container, a catch pan, rags, sockets, and a plastic trim tool ready before you start.

Ventilation is not a formality here. Gasoline vapor is heavier than air and settles along the floor rather than escaping through a window overhead, which puts it right where drop lights, space heaters, and appliance pilots normally sit. Work outdoors or with the overhead door fully open so air moves at ground level, clear every ignition source from the area, and keep an extinguisher within reach the entire time a fitting is open.

Fitting the Replacement Line

Cut the new hose to the original length. Extra material will find a frame tube to chafe against, while a short piece pulls at both fittings each time the chassis flexes. Push each end fully onto its barb until it seats, and assemble everything dry. Grease, oil, and silicone on a fuel fitting give pressurized fuel a route past the clamp, so none of it belongs near a sealing surface. Soften a tight hose end in hot water for a few seconds if it fights you.

Set new clamps just behind the raised bead on each fitting and tighten them evenly, firm without biting into the rubber. Where a self–locking quick–connect is used, push until it clicks and confirm with a firm tug rather than adding a clamp. Return the hose to every original clip so it clears the front driveline, the exhaust, and the steering assist wiring.

Confirming the Repair Holds

Reinstall the fuse, Reconnect the battery, and cycle the key on and off several times without cranking. The pump primes with each cycle and pressurizes the hose while the engine sits quiet, which is the clearest possible condition for spotting seepage. Dry both joints with a clean rag, start the 500AXi, and inspect once more at idle and after several minutes of warm running before the bodywork goes back on.

Keep this in mind going forward: the fuel filter on this injected KingQuad is built into the in–tank pump assembly rather than sitting inline on the hose you just replaced. New hose ends a leak, but a restricted filter inside the tank creates the same starved–engine feel and is the logical next step if symptoms persist.

Related Shopping Categories

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Shop Fuel Filters for a 2013 Suzuki King Quad 500AXi 4X4 POWER STEERING ATV.

Shop Fuel Stabilizer for a 2013 Suzuki King Quad 500AXi 4X4 POWER STEERING ATV.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your ATV'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.