Fuel Line Replacement for the 2019 Textron Alterra 570
Shop parts for a 2019 Textron Alterra 570 ATV.
A cracked fuel hose is one of the cheapest parts on a 2019 Alterra 570 and one of the most inconvenient failures you can have. The 545cc single in this 4x4 utility machine is fuel injected, so there is no petcock to shut off and no carburetor bowl to drain. An electric pump inside the tank keeps the line to the throttle body under pressure, which means the hose is not just carrying fuel, it is holding it back. Everything below is written around that reality.
Clues That the Hose Is Done
Riders usually notice one or two of these before a line lets go completely:
- Gasoline pooled on the skid plate, the floor, or a wet streak running down a frame tube
- A strong fuel smell hanging around the machine, especially in the first minutes after you shut it off
- Hairline cracks on the outside of the hose, a chalky texture, or a stiff section that no longer springs back when squeezed
- An engine that bogs when you get into the throttle, stumbles on climbs, or acts starved as if the tank were low
- Grime built up in a ring at a fitting, which is dust sticking to fuel that has been seeping and drying
On a pressurized system a small breach can spray a fine mist that evaporates before it ever drips, so the smell may show up long before any puddle. If the Alterra smells like fuel in a closed garage and you cannot find a source, put the hose at the top of your suspect list.
What Actually Kills a Fuel Hose
Nothing mechanical destroys this hose. It simply ages out. The rubber depends on plasticizers to stay flexible, and repeated heat cycling from the engine bay drives those compounds out over the years. The hose stiffens, loses its ability to absorb vibration, and then begins to fracture at every bend where the chassis works underneath it. Dry desert and high-plains air accelerates the process because low humidity pulls the remaining moisture from the rubber, hardening it from the outer skin inward.
Ethanol content in modern pump gas comes at the problem from the inside. Alcohol attracts water, and that mixture slowly degrades the inner liner, leaving it soft and swollen while the exterior grows brittle. When a 570 sits through a long off-season with treated or untreated ethanol fuel in the system, the blend has months to varnish the passages and loosen material from the hose wall. This is why a line with no visible damage still deserves replacement once it has enough seasons on it.
Rounding Up Everything You Need
Collect the following before you open a single connection:
- Rubber or nitrile gloves — gasoline passes through skin far more readily than most riders expect
- An approved fuel container and a low drain pan that fits under the machine
- New hose rated for fuel-injection pressure in the same inside diameter as what comes off
- A set of fresh clamps matching the original style, plus pliers sized for them
- Line-clamping pliers, which take the place of the fuel valve this model does not have
- A razor knife, several rags, and hand tools for the seat and body panels
Do this job in open air or with the shop door wide open. Gasoline vapor sinks and collects near the floor, so a ceiling fan does very little. Keep every ignition source out of the area, including work lights with exposed bulbs, and never smoke anywhere near an open fuel system.
Working the Old Line Free
Kill system pressure first. Remove the fuel pump fuse, crank the engine until it dies, switch the key off, and disconnect the negative battery terminal. Take off the seat and the plastics covering the tank so you have clear sight of the hose run heading to the throttle body. Slip the drain pan underneath and wrap a rag around the fitting you intend to open, because even a depressurized hose still holds a slug of fuel.
Push spring clips or worm-gear clamps back along the hose before disturbing the joint. Quick-connect couplers need the locking tabs pressed squarely and a straight pull; prying sideways on an aged plastic collar is how they break. Gently rotate the hose on each barb to release the varnish that has effectively glued it in place, and if it will not budge, split it lengthwise with a knife and peel it off. Watch the routing as it comes out, because the front differential and driveshaft on a 4x4 chassis force the line through clearance gaps that a two-wheel-drive machine does not have.
Making the Connections
Measure and cut the replacement to match the piece you removed. Excess length lets the hose wander into the exhaust or rub a frame weld, and a short piece pulls at both fittings all day long. Slide each end fully onto its barb until it seats against the base, working it on completely dry. Grease, oil, and silicone spray have no place here; any film left on the sealing surface gives pressurized fuel a path to work its way out under the clamp.
Position the new clamps behind the raised ridge of each fitting and snug them uniformly instead of overtightening. If your Alterra uses a self-locking quick-connect on the tank side, push it home until the collar clicks and tug to verify engagement — that fitting seals on its own and needs no clamp. Reseat the hose in every factory clip so it holds its original path well away from the driveline.
Proving the Repair
Refit the pump fuse, Reconnect the battery, then turn the key on and off four or five times without cranking. Each cycle runs the pump and builds pressure, giving you a chance to study both fittings while everything is still clean and dry. Feel around each joint with a fingertip and a light-colored rag. Start the engine, let it idle, blip the throttle, and check once more before the plastics go back on.
One last note on this platform. The fuel filter on the injected 570 rides inside the tank as part of the pump assembly, not inline where a wrench can reach it, so replacing hose does nothing for a restricted filter. If the machine still feels flat under load after a clean install, the in-tank module is the next thing to look at.
Related Shopping Categories
Shop Fuel Lines for a 2019 Textron Alterra 570 ATV.
Shop Fuel Line Clamps for a 2019 Textron Alterra 570 ATV.
Shop Petcocks for a 2019 Textron Alterra 570 ATV.
Shop Fuel Filters for a 2019 Textron Alterra 570 ATV.
Shop Fuel Stabilizer for a 2019 Textron Alterra 570 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.