Fuel Line Replacement on the 2011 Suzuki KingQuad 500AXi 4x4
Shop parts for a 2011 Suzuki King Quad 500AXi 4X4 ATV.
The letters in the 500AXi name are the first thing to understand before you pick up a tool. The "i" tells you this KingQuad runs Suzuki's electronic fuel injection rather than a carburetor, and that single detail reshapes the whole job. There is no petcock tucked under the tank on this machine, no float bowl to drain, and the hose you are about to replace carries fuel under real pressure supplied by a pump living inside the tank itself.
What Fuel Injection Changes About This Job
On a carbureted utility quad you would simply rotate a fuel valve to OFF, pop a clamp, and let gravity or a pulse pump quit feeding the carb. Your 2011 KingQuad 500AXi gives you none of that convenience. Fuel travels from the in–tank pump module through a supply hose to the throttle body, and that circuit holds pressure even after the key is off. Relieving that pressure deliberately is step one, not an optional courtesy. The upside is that an injected system uses reinforced hose and often a locking coupler at the pump plate, both of which are more durable than a plain barb and worm clamp once installed correctly.
How the Hose Wears Out Over Time
Rubber fuel hose does not fail suddenly so much as it surrenders slowly. The plasticizers that keep the wall soft migrate out with every heat cycle from the 493cc single, and a hose that flexed easily at delivery gradually turns stiff and glassy. Riders in arid, high–desert country notice the change sooner because low humidity accelerates that drying from the outside in.
Ethanol–blended pump gas works the opposite direction. Alcohol pulls moisture into the fuel and slowly attacks the inner liner, so a hose can be hardening on the outside while softening and shedding material on the inside. Add a few months of sitting with old fuel in the system and you get gumming at the fittings as well. On a machine that has been earning its keep since 2011, calendar age alone justifies a close look.
Symptoms Worth Chasing Down
Catch the problem before it strands you. Look for:
- A wet ring or small puddle on the skid plate or garage floor under the tank area
- A gasoline smell that lingers around the machine, strongest right after shutdown
- Visible surface cracking, a chalky white bloom, or a section that feels rigid when pinched
- Bogging under load, a stumble on hard throttle, or the engine acting starved at higher rpm
- Dust caked into a dark ring at a fitting, which is dried fuel seepage collecting grit
Because the supply side is pressurized, a small pinhole may atomize fuel instead of dripping it. Trust your nose as much as your eyes on an injected KingQuad.
Gear, Parts & a Real Word on Gasoline
- Nitrile or rubber gloves, since gasoline strips skin oils fast
- A sealed metal or fuel–rated plastic container for whatever you capture
- Replacement hose rated for injection pressure and matched to the original inside diameter
- Fresh clamps in the correct style, plus a quick–disconnect release tool if your coupler uses one
- Line–clamping pliers, useful for pinching off a low–pressure section since no fuel valve exists here
- Socket set and trim tools for the seat and side panels, shop rags, and a drain pan
Work outdoors or with the door fully open. Gasoline vapor is heavier than air and settles at floor level, so ventilation down low matters far more than a cracked window overhead. Keep grinders, heaters, and pilot lights out of the space entirely.
Getting the Old Line Out
Pull the fuel pump fuse or relay, crank the engine briefly until it dies, then switch off the key and disconnect the battery negative cable. That sequence drops pressure to near zero. Remove the seat and the side plastics to expose the tank top and the run of hose heading toward the throttle body, and slide your drain pan underneath before touching a fitting. Drape a rag over each joint as you open it, because residual fuel still sits in the line.
Slide worm or spring clamps well back along the hose before twisting anything loose. For a locking quick–connect, press the tabs squarely and pull straight off without levering sideways, since aged plastic collars crack easily. Twist a stubborn hose gently to break the varnish bond at the barb, or slit it lengthwise with a blade and peel it away rather than risking damage to the fitting. Note the routing as it comes free: this is a selectable 4x4 chassis, so the line passes clearance points near front differential hardware and frame crossmembers that a two–wheel–drive quad does not carry.
Fitting and Routing the New Hose
Cut the replacement to the original length and no longer. Extra hose chafes on frame tubes or wanders toward the exhaust. Push each end fully onto its barb until it bottoms, and install it dry. Grease, oil, and silicone all belong nowhere near a fuel fitting, because any lubricant on the sealing surface gives pressurized fuel a path to creep past the clamp. If the hose is tight, a brief soak of the end in hot water softens it enough to slide on unaided.
Set new clamps just behind the raised bead on each fitting and tighten them evenly, snug rather than crushed. Where a self–locking coupler is used, push until it clicks and then tug firmly to confirm the latch caught; no clamp belongs there. Return the hose to every original clip and guide so it stays clear of the front driveline and hot surfaces.
Pressure Testing Before You Ride
Reinstall the fuse, Reconnect the battery, and cycle the key on and off several times without cranking. Each cycle runs the pump and pressurizes the circuit, which lets you inspect a dry system for the first bead of fuel. Wipe both joints with a clean rag, then start the 500AXi and check again at idle, and once more after a few minutes of warm running. Only then should the plastics go back on.
One last point specific to this platform: the fuel filter on an injected KingQuad rides inside the tank as part of the pump assembly rather than sitting inline where you can reach it. A fresh hose will not cure a clogged strainer, so if fuel delivery still feels soft after a clean install, that in–tank unit is the next place to look.
Related Shopping Categories
Shop Fuel Lines for a 2011 Suzuki King Quad 500AXi 4X4 ATV.
Shop Fuel Line Clamps for a 2011 Suzuki King Quad 500AXi 4X4 ATV.
Shop Petcocks for a 2011 Suzuki King Quad 500AXi 4X4 ATV.
Shop Fuel Filters for a 2011 Suzuki King Quad 500AXi 4X4 ATV.
Shop Fuel Stabilizer for a 2011 Suzuki King Quad 500AXi 4X4 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.