Swapping the Fuel Line on a 2017 Can-Am Outlander 850 DPS
Shop parts for a 2017 Can-Am Outlander 850 DPS ATV.
Most riders discover a bad fuel hose the same way: a whiff of gasoline in the garage that was not there last month. On a 2017 Outlander 850 DPS that smell deserves a same-weekend response, because the hose feeding the Rotax V-twin carries pressurized fuel rather than a lazy gravity trickle. Below is how to read the warning signs, then work through the replacement cleanly.
What a Tired Hose Tells You Before It Quits
Failures announce themselves gradually if you know what to look for. Start with a walk-around after the machine has sat overnight, then repeat the inspection with the plastics off.
- A damp patch or a small puddle collecting on the skid plate beneath the tank area
- Persistent fuel odor around the seat and rear fender, sharpest immediately after you shut the engine down
- Hairline cracks radiating from the fittings, or a hardened stretch that no longer springs back when squeezed
- A stumble off idle, a soft spot when you load the engine on a hill, or the machine behaving as though the tank is nearly empty when it is not
- A dried, dust-crusted ring around a barb where seeping fuel has evaporated over and over
Because this is an injected machine, a pinhole on the pressure side often sprays a fine mist that evaporates before it ever forms a drop. If you smell fuel but cannot find a puddle, keep looking rather than dismissing it.
Injection, Not Carburetion — Why That Changes the Job
The 854cc twin in the 2017 Outlander 850 DPS is fuel injected, and that single fact rewrites the first step of the procedure. There is no petcock lever to rotate closed and no float bowl drain to crack open. An electric pump sits inside the tank, feeding the rail through a supply hose that stays under pressure long after the key comes out. So instead of shutting a valve, you deliberately bleed the system down, and instead of the universal barb-and-clamp joints you would find on a carbureted quad, you may be releasing a locking quick-connect at the pump flange.
The DPS also carries selectable four-wheel drive, and even when you run it in 2WD the front differential and half shafts remain in the chassis. The supply hose therefore routes around more hardware than a stripped-down 2WD quad would present, and it is retained by clips that keep it well clear of both the driveline and the power steering assembly.
The Chemistry and Physics Behind Hose Failure
Rubber fuel hose is a consumable. Over years, the plasticizers that keep the wall flexible leach out, and the hose goes from pliable to stiff to brittle. Heat cycling from the V-twin speeds that along, and constant chassis flex over rough ground turns brittleness into visible cracking. Riders in dry, low-humidity regions see the process run noticeably faster, because there is less ambient moisture to slow the drying of the outer wall.
Ethanol-blended fuel attacks the inside at the same time. Left standing in the line through an inactive stretch, the alcohol content draws in water and gradually breaks down the inner liner, which softens, swells, and sheds particles downstream. A hose can be hardening outside and dissolving inside simultaneously, which is exactly why age on a machine several seasons old is as meaningful as anything you can see.
Gearing Up and Working Safely
Collect the following before anything comes apart:
- Rubber or nitrile gloves and safety glasses
- A drain pan plus a sealed, fuel-rated container to store what you capture
- High-pressure fuel injection hose in the correct inside diameter for this machine
- New clamps sized to the fittings, and a quick-connect release tool if a locking coupler is present
- Line-clamping pliers, which stand in for the petcock a carbureted machine would give you
- Hand tools for the seat, side panels, and any rack or fender fasteners in the way, plus plenty of rags
Ventilation is not a formality here. Gasoline vapor is denser than air and pools near the floor, so work outside or with the shop door fully open and a low fan moving air out. Kill anything that sparks or glows — shop heaters, chargers, grinders, drop lights with hot bulbs — and keep an extinguisher at the machine, not on the far wall.
Getting the Old Section Out of the Chassis
Depressurize before you touch a fitting. Remove the fuel pump fuse or disconnect its harness plug, crank the starter until the engine dies, turn the key off, then disconnect the battery negative. Strip the seat and side plastics to expose the tank and the hose run heading forward to the engine. Position the drain pan and cover each joint with a rag as you open it, because residual fuel sits in the line even after the pressure is gone.
Before the old hose is fully free, photograph how it lies. On a 4x4 Outlander it navigates a couple of frame clearance points and stays intentionally distant from the front driveline, and it is far easier to duplicate that path than to reinvent it. Push clamps back along the hose before wrestling with a joint. For a quick-connect, depress the tabs evenly and draw the coupler off straight; sideways leverage snaps aging plastic collars. Where varnish has bonded the hose to a barb, cut the old hose lengthwise and peel it off instead of twisting.
Installing, Sealing, and Checking Your Work
Measure the replacement against the original and match it exactly. A long hose rubs the frame or interferes with steering travel; a short one strains the joints. Seat each end completely on its fitting, dry. Grease, oil, and sealant have no business on a fuel fitting, since any film under the clamp becomes a leak path once the pump comes up to pressure. Softening the hose end in hot water for a few seconds is the trick that makes a dry install easy. Position fresh clamps behind the bead on each barb, tighten them evenly, and if the tank side uses a self-locking coupler, push it home until it clicks and pull on it to prove it latched. That style of fitting needs no clamp.
Reinstall the hose into every clip you photographed, refit the pump fuse, and Reconnect the battery. Cycle the ignition several times without cranking so the pump repressurizes the rail, then wipe both joints with a dry rag and watch for the faintest dampness. Fire the engine, let it idle a few minutes, and inspect once more before the bodywork goes back on. Keep in mind that the fuel filter on this Outlander is part of the in-tank pump module rather than a serviceable inline unit, so if the machine still feels fuel-starved with a fresh hose fitted, the assembly inside the tank is where to look next.
Related Shopping Categories
Shop Fuel Lines for a 2017 Can-Am Outlander 850 DPS ATV.
Shop Fuel Line Clamps for a 2017 Can-Am Outlander 850 DPS ATV.
Shop Petcocks for a 2017 Can-Am Outlander 850 DPS ATV.
Shop Fuel Filters for a 2017 Can-Am Outlander 850 DPS ATV.
Shop Fuel Stabilizer for a 2017 Can-Am Outlander 850 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.