A Clean Fuel Line Swap on Your 2020 Can-Am Outlander 850
Shop parts for a 2020 Can-Am Outlander 850 ATV.
The difference between a tidy fuel line job on a 2020 Outlander 850 and a gasoline-soaked afternoon comes down almost entirely to setup. Everything you need should be staged and within reach before the first panel comes off, because once a pressurized line is open you do not want to be walking anywhere.
Staging the Work Area
Put the Outlander on level ground, set the brake, and clear enough space to circle the machine with plastics removed. Then handle ventilation properly, since this is the step riders skip. Gasoline vapor is heavier than air and collects along the floor, so working outdoors or with the garage door completely open does far more good than a window at head height. Shut off shop heaters and water heater pilots, put grinders and other spark sources away, and let the Rotax V-twin and its exhaust cool before you reach across them.
Your bench list:
- Nitrile or rubber gloves and eye protection, since gasoline strips skin oils fast
- A shallow drain pan plus a sealed, fuel-rated container for captured fuel
- Hose rated for injection pressure, cut from stock in the original inside diameter
- New clamps in the correct style, and a quick-disconnect release tool if your coupler uses one
- Line-clamping pliers to close off a soft section of line
- Sockets and drivers for the seat, rack, and side panels, a fresh razor blade, and clean rags
Why There Is No Valve to Close
Those clamping pliers exist on the list because your 850 is fuel injected and carries no petcock. The pump lives inside the fuel tank, the hose to the engine stays pressurized after shutdown, and nothing on the machine lets you simply turn fuel off. So relieving pressure becomes the first step of removal. Two related facts follow: the connections may be self-locking quick-connect couplers rather than barbs with clamps, and the filter element is part of the in-tank pump assembly rather than an inline canister you can reach on the visible hose.
What Wears a Hose Out Over Time
Heat drives the external half of the failure. Each ride cycle bakes more plasticizer out of the rubber wall, and hose that was flexible when new turns rigid and glassy. Once it can no longer absorb movement, the ordinary flex of a working chassis converts that stiffness into checks and eventually splits. In dry, arid country the process runs faster, because low humidity keeps pulling moisture out of the material.
Fuel chemistry handles the internal half. Ethanol blends draw water into the system and slowly attack the hose liner, softening and swelling the bore while releasing fine particles toward the injectors. Any long parked stretch compounds it, since standing fuel gums and varnishes against a wall that has already lost integrity. Both processes run on calendar time rather than mileage, which is why a lightly used 850 still deserves a hose inspection.
Spotting a Line on Its Way Out
- Raw gasoline odor around the tank and rear fenders, strongest just after shutdown while pressure remains
- A small puddle beneath the machine or a wet streak on the skid plate after it sits overnight
- Surface checking, a chalky gray cast, or a permanently pinched spot beneath a clamp
- A dirt-caked crust at a fitting from repeated seeping and drying
- Bogging under load, hesitation on hard throttle, or the engine acting as though fuel were running short
On a pressurized system a pinhole can atomize and evaporate without ever dripping, so weigh the smell test as heavily as the visual one.
Disconnecting the Existing Hose
Relieve pressure by pulling the fuel pump fuse or relay and cranking the engine a few seconds until it stalls. Turn the key off and disconnect the battery negative cable. Remove the seat and the side plastics to expose the tank and the hose run heading to the throttle body. Slide your pan underneath and drape a rag over each joint before you separate it, because a depressurized line still holds fuel.
Move clamps well back along the hose before disturbing the fitting. On a locking coupler, press the tabs squarely and pull straight off; angled force cracks collars that have hardened over several seasons. Twist the hose on its barb to break the varnish bond rather than hauling on it, and if an end refuses to release, slit it lengthwise and peel it away to keep the fitting intact. Take photos of the routing while everything is in place. This is a 4x4, so the hose has to navigate the front differential and extra frame crossmembers, and reproducing that route keeps the new line clear of the driveline and hot exhaust.
Installation and the Leak Check
Cut the new hose to the same length as the original, no more. Slack rubs frame tubes and can drift toward the pipe. Seat each end fully on its barb, working dry, with no grease, oil, or silicone anywhere near the sealing surfaces, because lubricant gives pressurized fuel a path out past the clamp. A few seconds in hot water softens a tight end enough to slide on. Place new clamps just behind the raised bead at each fitting and tighten them evenly instead of crushing the rubber. A self-locking quick-connect gets pushed until it clicks and then tugged hard to confirm the latch, with no clamp added. Route the hose back through every original retainer.
Reinstall the fuse, Reconnect the battery, and cycle the key on and off several times without cranking, which spins the pump and pressurizes the circuit for a static inspection. Wipe both joints with a clean rag and look for the faintest darkening. Then start the twin, let it idle, and check once more with the engine vibrating everything. Give it several dry minutes before the plastics go back on, and keep the first ride close to home. If fuel delivery still feels soft after a clean install, the in-tank pump and filter module is the next place to investigate.
Related Shopping Categories
Shop Fuel Lines for a 2020 Can-Am Outlander 850 ATV.
Shop Fuel Line Clamps for a 2020 Can-Am Outlander 850 ATV.
Shop Petcocks for a 2020 Can-Am Outlander 850 ATV.
Shop Fuel Filters for a 2020 Can-Am Outlander 850 ATV.
Shop Fuel Stabilizer for a 2020 Can-Am Outlander 850 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.