Changing the Fuel Line on a 2017 Can-Am Outlander MAX 450 DPS

Shop parts for a 2017 Can-Am Outlander MAX 450 DPS ATV.

Fuel hose is the cheapest part on a 2017 Outlander MAX 450 DPS and one of the few that can leave you stranded outright. Before you begin, get the fuel system straight in your head: the Rotax 450 single in this machine runs electronic fuel injection, an electric pump lives inside the tank, and the line to the throttle body carries pressure whenever the ignition is live. No petcock exists on this quad, so the first move is relieving pressure rather than closing a valve.

Draining Pressure and Freeing the Hose

Begin at the fuse block. Pull the fuel pump fuse, then start the engine and let it run until it stumbles and quits from starvation. Turn the key off and disconnect the negative battery cable. With the pump dead and the circuit relieved, opening a fitting becomes a controlled operation instead of a gamble.

Remove the seat and the side plastics to expose the tank outlet, then follow the hose forward toward the throttle body. This is a MAX, so the wheelbase is stretched for two-up seating and the run is longer than on a single-seat Outlander, with additional retaining clips holding it against the frame. Being a 4x4, the routing also has to clear the front differential and its mounting brackets, which narrows the corridor in a couple of spots a two-wheel-drive quad never deals with. Photograph the path before the hose is fully out.

Slide a pan under the joint and lay a rag over it, since a depressurized line still holds a slug of fuel. Walk any clamp well back along the hose before disturbing the fitting. Locking quick-connects release when you press both tabs flat and pull straight off; levering them sideways cracks aged plastic collars. Twist a varnished hose gently to break the bond at the barb, and if it holds fast, slit it lengthwise with a razor and peel it away rather than forcing the fitting.

Why Fuel Lines Give Up

Failure comes from both sides of the hose wall. Externally, the plasticizers that keep new rubber flexible slowly migrate out of the compound, and heat cycling from the engine accelerates the loss. Supple material becomes stiff, then glassy, and then routine chassis flex opens hairline splits. Owners riding and storing in dry, arid country reach that stage earlier, because low humidity draws residual moisture out of the rubber.

Internally, ethanol-blended pump gasoline degrades the liner. Alcohol content absorbs water and progressively breaks down the inner surface, releasing gum and fine particulate toward the injector. Fuel that sits in an Outlander MAX 450 DPS across a long off-season keeps that reaction running with the machine parked. Years in service, not the odometer, is the honest measure of hose life.

Signs That Something Is Wrong

Watch for these during any inspection:

  • A puddle or dried dark ring on the skid plate after the quad has been parked
  • Gasoline smell near the tank that lingers after shutdown
  • Fine cracking or a chalky, powdery surface on the hose
  • Hardened stretches that will not compress between your fingers
  • Grit caked in a collar at a fitting, marking dried fuel from a slow seep
  • Bogging under load, a lean stumble on throttle, or an engine acting starved with fuel in the tank

Since this Outlander is injected, a pressure-side pinhole can atomize fuel so thoroughly that nothing ever drips. A strong odor with a clean floor beneath the machine still warrants a close hose inspection.

What to Have Ready and How to Stay Safe

You need hose rated for fuel injection pressure in the same inside diameter as the original, because soft carburetor tubing will weep or balloon on a pressurized circuit. Add clamps in the style already fitted, plus a quick-disconnect release tool if the tank outlet uses a locking collar. Line-clamping pliers are essential here, since they are your only means of pinching off flow without a valve. Finish with nitrile gloves, safety glasses, a sealed approved container, a shallow catch pan, plenty of clean rags, and metric tools for the bodywork.

Handle the gasoline with real care. Its vapor is heavier than air, so it flows down and collects along the floor at the height of water heater pilots, battery chargers, and shop heaters. Work outdoors or with the shop open at both ends, shut off power to those appliances, keep a fire extinguisher within reach, and never open a fuel line over a drain.

Installation and the Leak Check That Counts

Cut the new hose to match the length of the piece you pulled off. Surplus length chafes on frame tubes or wanders toward the front driveline, and a short piece strains both barbs each time the chassis articulates. Push every end on completely dry until it bottoms out against the fitting shoulder. Grease, oil, and silicone spray stay off the barbs entirely, because lubricant on a sealing surface gives pressurized fuel a path to creep past it. Warm the hose end in hot water if it resists going on.

Set new clamps just behind the raised bead on each fitting and tighten them evenly to firm rather than crushed. A self-locking quick-connect requires no clamp at all; press until the collar clicks and then pull to verify the latch caught. Route the hose back through every original clip so it keeps its factory clearance from the exhaust and the front drive components.

Reinstall the pump fuse, Reconnect the battery, and cycle the key on and off several times without cranking. Each cycle runs the pump and pressurizes the line while both joints are still clean and dry, which makes any seepage immediately visible. Wipe the connections, inspect in strong light, then start the engine and watch through a few minutes of idle before the plastics go back on. One last thing to file away: the fuel filter on this injected Outlander is built into the in-tank pump module rather than sitting inline where you could change it with the hose, so if delivery still feels soft under load after a clean install, that assembly is the next place to look.

Related Shopping Categories

Shop Fuel Lines for a 2017 Can-Am Outlander MAX 450 DPS ATV.

Shop Fuel Line Clamps for a 2017 Can-Am Outlander MAX 450 DPS ATV.

Shop Petcocks for a 2017 Can-Am Outlander MAX 450 DPS ATV.

Shop Fuel Filters for a 2017 Can-Am Outlander MAX 450 DPS ATV.

Shop Fuel Stabilizer for a 2017 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.