Fuel Line Replacement Walkthrough for the 2019 Can-Am Renegade 850

Shop parts for a 2019 Can-Am Renegade 850 ATV.

Fuel hose is consumable hardware. It hardens on a calendar, not an odometer, and the 2019 Renegade 850 gives it a demanding environment to age in: constant heat from the Rotax V-twin, a chassis that flexes hard over rough ground, and a pressurized injection circuit that never lets the hose rest. Here is how to inspect and renew it properly.

Reading the Hose Before It Fails

Start with your hands. Run the length of the line through your fingers and feel for stretches that have gone rigid and glassy instead of soft. A pliable hose seals against a barb; a hardened one does not. Then look closely for a network of fine surface cracks, a chalky whitened exterior, or a ring of caked dirt around a fitting, which is dried seepage that collected trail dust.

Your nose is the next instrument. A gasoline smell that lingers around a parked 850, strongest in the first minutes after shutdown while the circuit remains pressurized, frequently precedes any visible leak. And watch how the engine runs: bogging under load, hesitation on hard acceleration, or behavior that feels like a nearly empty tank all point at a delivery restriction or a pressure loss. Because an injected machine can spray a fine mist from a pinhole that evaporates before it drips, do not dismiss a strong smell just because the floor is dry.

Injected, Which Changes the Approach

The 2019 Renegade 850 is fuel injected. There is no petcock to close under the tank, since fuel is not gravity fed — an electric pump module inside the tank pressurizes the line to the injectors and holds that pressure after shutdown. Relieving pressure is therefore the genuine first step, well before any clamp gets loosened. The fuel filter is integrated into the in-tank pump module, so the hose you are replacing has no serviceable inline filter to swap along with it.

The 850 is a 4x4 machine, and its hose routing threads past front differential hardware and extra frame crossmembers. The procedure matches what you would do on a two-wheel-drive quad; there are simply a few more clips and clearance points to track on the way out.

Why Rubber Hose Gives Up

Heat cycling is the slow killer. Every warm-up and cool-down drives a little more plasticizer out of the rubber compound until the hose is stiff and brittle rather than flexible. A stiff hose cannot move with the chassis, so ordinary vibration converts surface checking into cracks that eventually weep. In dry, low-humidity regions the process runs faster, as arid air steadily wicks moisture out of the hose wall and hardens it from the outside inward.

Ethanol-blended gasoline attacks from the other side. E10 draws in and retains water, and when a Renegade sits through a long off-season with that fuel standing in the line, the alcohol degrades the inner liner while the light fractions evaporate and leave gum behind. The end result is a hose that hardens outside and softens inside at the same time, often shedding fine particulate toward the injectors before it ever leaks a drop.

Tools, Parts, and Working Safely with Gasoline

  • Rubber or nitrile gloves, since gasoline passes through skin and strips its oils
  • A lidded metal or fuel-rated plastic container for drained fuel
  • New hose in the original inside diameter, rated for injection pressure rather than gravity-feed use
  • Fresh clamps in the existing style, plus a quick-disconnect release tool if the tank end is a locking coupler
  • Line-clamping pliers, filling in for the petcock this machine does not have
  • Sockets and drivers for seat and plastics, a small flat screwdriver, a razor blade, and a generous supply of rags

Do this outdoors or with the garage door fully raised. Gasoline vapor is heavier than air, so it settles and pools at floor level where an ignition source can reach it, and low ventilation matters far more than an open window above your head. Remove space heaters, pilot lights, grinders, and hot lamps from the area entirely before you start.

Removing the Old Line

Pull the fuel pump fuse or relay and crank the engine until it stalls, which burns off residual pressure. Turn the key off and disconnect the battery negative cable. Remove the seat and the side plastics needed to reach the tank outlet, then trace the hose back to the throttle body.

Set a drain pan beneath the work and lay a rag over each fitting as you open it, because standing fuel remains in the hose even after pressure is gone. Slide clamps well clear of the joint before disturbing it. Quick-connect couplers separate when both tabs are pressed squarely and the fitting is drawn straight off; angled prying cracks aging collars. If varnish has bonded the hose to a barb, break it loose with a gentle twist, and if it holds fast, slit the hose lengthwise and peel it away rather than putting force on the fitting. Photograph the routing and clip positions before the hose is fully free.

Installing and Verifying

Match the new hose to the old one for length. A hose cut long will drape into the front driveline or chafe on a frame edge until it fails. Push each end all the way onto its barb, dry, with nothing on the sealing surfaces. Grease, oil, and silicone are all off limits here — a lubricated barb gives pressurized fuel a route to creep out from under the hose. Dip a stiff end in hot water for a few seconds if it fights you.

Place new clamps just behind the raised bead on each fitting and snug them evenly. Where the tank side is a self-locking quick-connect, push until the collar clicks and then pull firmly to confirm it latched; no clamp belongs on that joint. Reseat the hose in every original clip so it stays away from exhaust heat and clear of the differential.

Then pressurize and check. Reinstall the pump fuse, Reconnect the battery, and cycle the key on and off several times without starting. Every cycle runs the pump and brings the line up to pressure while the fittings are still dry and readable. Wipe both joints, start the engine, and inspect again at idle for several minutes before shutting down for a final look. If delivery problems persist after a clean install on this 850, the in-tank pump and filter assembly is the logical next suspect.

Related Shopping Categories

Shop Fuel Lines for a 2019 Can-Am Renegade 850 ATV.

Shop Fuel Line Clamps for a 2019 Can-Am Renegade 850 ATV.

Shop Petcocks for a 2019 Can-Am Renegade 850 ATV.

Shop Fuel Filters for a 2019 Can-Am Renegade 850 ATV.

Shop Fuel Stabilizer for a 2019 Can-Am Renegade 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.