Replacing the Fuel Feed Line on a 2020 Can-Am Outlander MAX 450 DPS

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

Replacing a fuel hose is one of the more satisfying jobs on a 2020 Outlander MAX 450 DPS, provided you set it up correctly. The complication is not mechanical, it is the fuel. This machine's Rotax 450 single runs electronic fuel injection with the pump mounted inside the tank, so the line between tank and throttle body carries pressure the instant the key comes on. There is no petcock to shut off, meaning the first task is taking pressure out of the circuit.

Setting Up and Handling Gasoline Properly

Assemble the whole kit before you begin. You will want nitrile or heavy rubber gloves, safety glasses, a sealed fuel-rated container for whatever drains out, a shallow catch pan, replacement hose rated for injection pressure in the same inside diameter as the original, new clamps in the style already on the machine, line-clamping pliers to substitute for the absent petcock, a quick-disconnect release tool if the tank outlet uses a locking collar, and metric hand tools for the seat and side panels. Keep a generous supply of clean rags within reach.

Then treat the fuel with the caution it deserves. Gasoline vapor is heavier than air, which means it sinks and travels along the floor, collecting at the exact height where water heater pilots, battery chargers, and shop heaters operate. Work outdoors or with the shop open at both ends so vapor has somewhere to go, cut power to every appliance that can spark, keep a fire extinguisher in arm's reach, and never open a fuel line over a floor drain.

The Slow Decline of a Fuel Hose

Rubber is losing flexibility from the day it goes on. The plasticizing compounds responsible for that flexibility migrate slowly out of the material, and repeated heat cycling from the engine bay speeds their exit. A hose wall that once flexed with the chassis becomes stiff, then glassy, and then ordinary frame movement opens hairline splits. Machines living in dry, arid regions reach that point sooner, since low humidity draws residual moisture from the rubber and hardens it from the surface inward.

Ethanol-blended fuel handles the inside. Alcohol content attracts water and gradually degrades the inner liner, shedding gum and fine particulate that heads toward the injector while the outer wall continues to harden. An Outlander MAX 450 DPS that sits for months with fuel in the system is deteriorating on that clock with no miles accumulating, which is why hose age matters more than hours logged.

Symptoms to Take Seriously

Run through this list before you commit:

  • A puddle or dried dark stain on the skid plate after an overnight park
  • A gasoline odor near the tank that persists after shutdown while pressure remains
  • Fine cracking, crazing, or a chalky powdery texture on the hose
  • A hardened section that no longer compresses when pinched
  • Grit caked in a ring at a fitting, indicating a slow seep
  • Bogging under load, a lean stumble on throttle, or an engine acting starved on a full tank

Injected machines complicate the visual search. Fuel escaping a pressure-side pinhole frequently mists and evaporates before it can drip, so a persistent smell with nothing visible on the concrete still justifies a careful hose inspection.

Working the Old Hose Off the Machine

Pull the fuel pump fuse, run the engine until it starves and dies, turn the key off, and disconnect the negative battery terminal. That sequence relieves the circuit and guarantees the pump stays dead while your hands are in the fuel path. Remove the seat and side plastics to reach the tank outlet, then trace the hose forward toward the throttle body.

Note the routing as you go. The MAX rides on a stretched wheelbase for two-up seating, so the run is longer than on a standard Outlander and passes through more retaining clips. Being a 4x4, the path also has to clear the front differential and its mounting brackets, which narrows the corridor in a spot or two that a two-wheel-drive quad never has to accommodate. Photographs of each clip save real time on reassembly.

Slide the pan under the joint and drape a rag over it before opening anything, because a relieved line still holds fuel. Walk any clamp well back along the hose first. A locking quick-connect releases when both tabs are compressed flat and the coupler is pulled straight off; prying it at an angle cracks brittle collars. Give a varnished hose a gentle twist to break the bond, and if it will not release, slit it lengthwise with a razor and peel it away rather than torquing the barb.

Fitting the Replacement and Proving It Dry

Measure the removed hose and cut the new one to match rather than eyeballing it. Surplus length chafes against frame tubes or drifts toward the front driveline, and a short piece pulls at both barbs whenever the suspension cycles. Push each end on completely dry until it bottoms out against the fitting shoulder. Grease, oil, and silicone spray have no place on a fuel barb, because any lubricant there creates a channel for pressurized fuel to work past the seal. Soften a stubborn end in hot water instead.

Place new clamps just behind the raised bead on each fitting and tighten them evenly to firm rather than crushed. Where a self-locking quick-connect is fitted, no clamp belongs there at all — press until the collar clicks and then pull to verify the latch caught. Route the hose back through every factory clip so it retains its clearance from the exhaust and the front drive hardware.

Reinstall the fuse, Reconnect the battery, then cycle the key on and off half a dozen times without cranking. Each cycle spins the pump and loads the line while both joints are clean and dry, making any seepage immediately visible. Wipe the connections, inspect under strong light, then start the engine and watch through several minutes of idle before the plastics return. Worth remembering: on this injected Outlander the fuel filter is part of the in-tank pump module rather than an inline piece on the visible hose, so a new line will not resolve a restricted filter.

Related Shopping Categories

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

Shop Fuel Line Clamps for a 2020 Can-Am Outlander MAX 450 DPS ATV.

Shop Petcocks for a 2020 Can-Am Outlander MAX 450 DPS ATV.

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

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