Renewing the Fuel Line on a 2020 Can-Am Outlander MAX 450 6x6 DPS

Shop parts for a 2020 Can-Am Outlander MAX 450 6x6 DPS ATV.

A six-wheeled utility machine is built to carry weight through terrain that stops other quads, and the 2020 Outlander MAX 450 6x6 DPS earns its keep doing exactly that. What it does not do is protect the fuel hose from the passage of time. The Rotax 450 single in this machine runs electronic fuel injection with the pump mounted inside the tank, so the delivery line stays pressurized whenever the ignition is live. There is no petcock to close, and that fact drives the entire sequence below.

The Two Ways a Fuel Hose Dies

Deterioration happens from the outside in and the inside out simultaneously. On the exterior, plasticizers that give new rubber its flexibility gradually migrate out of the compound, a process accelerated by every heat cycle from the engine. A hose that once bent easily turns stiff, then glassy, and ordinary chassis movement starts opening hairline splits. Riders in dry, arid regions see this stage arrive sooner, because low ambient humidity strips moisture from the hose wall and speeds the hardening.

On the interior, ethanol-blended pump gasoline is the aggressor. Alcohol content absorbs water and steadily breaks down the liner, shedding gum and fine debris toward the injector. When a 6x6 sits between work seasons with fuel in the system, that reaction proceeds on its own schedule with no miles accumulating. Age in service, not the hour meter, is the fair way to judge whether a hose is due.

Warning Signs Around the Machine

Check for the following any time you are under the bodywork:

  • A puddle or dried dark stain on the skid plate after the machine has been parked
  • Gasoline smell hanging near the tank, sharpest immediately after shutdown while pressure remains
  • Fine cracking, crazing, or a chalky white surface anywhere along the hose
  • A stiff, unyielding section that refuses to compress between your fingers
  • Grit caked in a ring at a fitting, which marks fuel that has been weeping and drying
  • Bogging under load, a lean stumble on throttle, or behavior that mimics an empty tank

Because this Outlander is injected, a leak on the pressure side does not always drip. Fuel escaping a pinhole can atomize and evaporate before reaching the ground, leaving only the odor behind. A smell with a clean floor underneath still deserves a hose inspection.

Parts, Tools, and a Word on Gasoline

Buy hose rated for fuel injection pressure in the same inside diameter as the original. Soft carburetor tubing is not adequate on a pressurized circuit. Add clamps in whatever style your machine already uses, and pick up a quick-disconnect release tool if the tank outlet carries a locking collar. Line-clamping pliers matter here, since they are the only way to pinch off flow on a machine with no fuel valve.

Round it out with nitrile gloves, safety glasses, a sealed approved container for drained fuel, a shallow catch pan, a generous stack of clean rags, and metric hand tools for the seat, side panels, and rear cargo box hardware. Then take the fuel itself seriously: gasoline vapor is heavier than air and flows along the floor, collecting at the same height as water heater pilots, battery chargers, and shop heaters. Work outdoors or with the shop opened at both ends, cut power to those appliances, keep an extinguisher within reach, and stay clear of floor drains.

Working the Old Line Free

Drop the pressure first. Pull the fuel pump fuse, run the engine until it stalls on its own, switch the key off, then disconnect the negative battery cable so the pump cannot energize while a fitting is open. Remove the seat and the side plastics to reach the tank outlet, then follow the hose forward toward the throttle body.

This chassis deserves extra attention during removal. The 6x6 layout stretches the frame well past a standard MAX to accommodate the third axle and the rear cargo bed, so there is more distance, more bodywork, and more retaining hardware between you and the far end of the hose. Add the driven front differential and its brackets and you have a routing corridor with several tight clearance points that a two-wheel-drive quad never contends with. Photograph each clip and pass-through before the hose is fully out.

Slide the pan under the joint and cover it with a rag, since residual fuel stays in the line even after depressurizing. Walk any clamp back along the hose before disturbing the fitting. A locking quick-connect releases when both tabs are compressed flat and the coupler is pulled straight back — never lever it sideways, because aged plastic collars crack. Break a varnished hose loose with a gentle twist, and if it holds, slit it lengthwise with a razor and peel it off rather than putting torque on the barb.

Fitting the New Hose and Confirming It Holds

Cut the replacement to match the piece you removed, measuring rather than eyeballing on a chassis this long. Extra length chafes on frame tubes or drifts toward driveline components, and a short piece pulls at both barbs whenever the suspension articulates. Push each end on completely dry until it bottoms against the fitting shoulder. Grease, oil, and silicone spray stay off the barbs entirely, since any lubricant there gives pressurized fuel a route past the seal. Hot water is the correct way to soften a stubborn end.

Set new clamps just behind the raised bead on each fitting and tighten evenly to firm, not crushed. A self-locking quick-connect needs no clamp whatsoever; press until the collar clicks, then pull to confirm the latch. Restore the hose to every original clip so it keeps its factory clearance from the exhaust and the drive hardware.

Reinstall the fuse, Reconnect the battery, and cycle the key on and off half a dozen times without cranking. Each cycle spins the pump and pressurizes the line while both joints are dry enough that a trace of fuel shows instantly. Wipe the connections, inspect under strong light, then start the engine and watch through several minutes of idle before reassembling the plastics. One closing detail: the fuel filter on this injected Outlander is integrated into the in-tank pump module rather than sitting inline, so if delivery still feels soft under load after a clean install, that assembly is your next stop.

Related Shopping Categories

Shop Fuel Lines for a 2020 Can-Am Outlander MAX 450 6x6 DPS ATV.

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Shop Fuel Filters for a 2020 Can-Am Outlander MAX 450 6x6 DPS ATV.

Shop Fuel Stabilizer for a 2020 Can-Am Outlander MAX 450 6x6 DPS 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.