Changing the Fuel Line on a 2020 Can-Am Outlander 850 XT-P

Shop parts for a 2020 Can-Am Outlander 850 XT-P ATV.

Gasoline deserves respect, and nowhere more so than on a machine like the 2020 Outlander 850 XT-P where the fuel is under pressure rather than sitting quietly in a gravity-fed line. This Rotax 854cc twin is fuel injected, drawing from an electric pump mounted inside the tank, and there is no petcock valve on the quad to shut off flow. That means the first decisions you make about ventilation and pressure relief matter more than any wrench work that follows.

Ventilation and Pressure Relief Come First

Begin by bleeding the system down. Pull the fuel pump fuse from the fuse block, crank the starter until the engine quits, then turn the key off and disconnect the battery negative cable so nothing can wake the pump or arc while a fitting is open. Do not loosen a single joint before this is done.

Next, deal with the air. Gasoline vapor is heavier than air, so it does not rise and dissipate. It sinks, flows along the floor, and pools exactly where water heater pilots, space heaters, and extension cord connections tend to live. Roll the XT-P outdoors if the weather allows. In a garage, open the door completely and set a fan low so it moves air out of the building rather than swirling it around, shut down anything with a flame or a glowing element, and keep a dry chemical extinguisher within arm's reach. Wear nitrile or rubber gloves, because gasoline passes through skin easily and takes its additives along.

How Age and Fuel Chemistry Wear Hose Out

Rubber fuel hose is attacked from two directions at once. Externally, years of heat cycles from the big twin pull the plasticizers out of the wall until the hose goes stiff and stops flexing with a chassis that moves as much as an XT-P does over rough ground. Arid climates speed that along, since low humidity draws residual moisture out of the material and leaves an exterior that looks chalky and crazes when bent.

Internally, ethanol-blended gasoline does the damage. Fuel standing in the line through a long inactive period absorbs atmospheric moisture and slowly breaks down the inner liner, softening it while the outer wall continues to harden. That produces a hose that can look serviceable while releasing fine material toward injectors with very small orifices. On a carbureted machine the debris would at least settle into a float bowl fitted with a drain screw. There is no equivalent catch on this quad, which makes age alone a legitimate reason to replace the line.

What a Failing Line Looks and Smells Like

  • Fuel pooled on the skid plate or a damp ring on the concrete after the machine has sat
  • A persistent gasoline odor near the seat and console, sharpest in the minutes after shutdown
  • Visible surface cracking or a hardened, glassy section you can feel by squeezing the hose
  • A sticky, dust-caked ring at one fitting where fuel has been seeping and evaporating
  • Bogging under load, a sharp stumble on hard throttle, or a lean feel at sustained rpm
  • Cranking noticeably longer than usual on a cold start

Understand that a pressurized leak frequently produces no puddle at all, because fuel escaping a hairline split atomizes and evaporates before it can drip. On this platform your nose is often the more dependable instrument than your eyes.

Parts and Tools for the Job

  • Hose rated for fuel-injection pressure in the same inside diameter as the original, not low-pressure tubing
  • Fresh clamps matched to the fitting style, plus a quick-connect release tool if your quad uses locking collars
  • Line-clamping pliers, taking the place of the petcock this model does not have
  • A wide drain pan and a sealed container approved for gasoline
  • A razor blade or hose cutter for square ends, a flat-blade screwdriver, and sockets for the seat and console
  • Considerably more rags than the job appears to require

Getting the diameter right is not a detail to skip. Oversized hose weeps under pump pressure regardless of clamp torque, and undersized hose will not seat fully onto the barb.

Working the Old Line Free

With pressure relieved and the battery disconnected, remove the seat and center panel to reach the tank, the pump flange, and the hose run heading toward the throttle body. Slide the pan into position and lay a rag over the joint you plan to open, since a bled circuit still holds standing fuel that will spill.

Back any clamp well away from the fitting before you twist anything. Quick-connect couplers release when you squeeze the locking tabs squarely and pull straight along the fitting axis, never by prying to one side, because plastic collars grow brittle with heat and age. A hose varnished onto a barb usually surrenders to patient rotational pressure, and slitting it lengthwise with a razor is the right move when it does not. Note every retaining clip and clearance point as the line comes out. This is a 4x4 chassis, and the front differential and driveshaft hardware make the routing corridor tighter than on a two-wheel-drive machine.

Installation and the Final Leak Check

Cut the new hose to match the original length rather than estimating. Extra length lets it sag into moving hardware or chafe on a frame rail, and a short piece keeps both fittings under constant tension. Push the replacement onto each barb until it bottoms out against the shoulder, and install it dry. Grease, oil, and silicone spray all compromise the seal between hose and fitting under pressure and let the hose creep off over time. Soften a stubborn end in hot water for half a minute instead.

Set clamps just behind the raised bead on each fitting so they cannot migrate, tightened to firm contact rather than crushing the wall. Where the Outlander uses a self-locking quick-connect, push until the collar clicks and then tug hard to confirm engagement; no clamp is needed or wanted there. Reinstall the hose through its factory guides so it stays clear of exhaust heat and the front driveline.

To finish, reinstall the pump fuse, Reconnect the battery, and cycle the key on and off five or six times without cranking. Each cycle primes the pump and loads the line to full pressure while the fittings are still dry, which is the ideal moment to catch a seep. Wipe both joints with a clean white rag and inspect it, then start the engine, look again at idle, ride slowly around the yard, and check one last time. Bear in mind too that the fuel filter on this Outlander is part of the in-tank pump assembly rather than an inline element on the visible hose, so continued starvation after a clean install points to that module rather than your new line.

Related Shopping Categories

Shop Fuel Lines for a 2020 Can-Am Outlander 850 XT-P ATV.

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Shop Petcocks for a 2020 Can-Am Outlander 850 XT-P ATV.

Shop Fuel Filters for a 2020 Can-Am Outlander 850 XT-P ATV.

Shop Fuel Stabilizer for a 2020 Can-Am Outlander 850 XT-P 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.