How to Replace a Cracked Fuel Line on a 2012 Can-Am Outlander 800R X MR
Shop parts for a 2012 Can-Am Outlander 800R X MR ATV.
The Evidence That Points at the Hose
Fuel line trouble on a 2012 Outlander 800R X MR often gets misdiagnosed, because a mud machine gives you plenty of other things to suspect. Start with the simplest test you own. A gasoline smell that hangs around the quad after a ride, strongest in the first few minutes after shutdown while the injected system still holds pressure, is the most dependable early indicator there is.
From there, work visually. A damp spot or small puddle on the skid plate after the machine has sat, or a ring of caked grime around a fitting where fuel has seeped and dried again and again, both tell the same story. Pinch the hose along its length: rubber that feels rigid, chalky, or slick and glassy has already given up its flexibility, and the surface cracking that accompanies it usually extends deeper than it appears. Then consider how the engine runs. Bogging when you open the throttle, a lean stumble on a long pull, or the machine acting like it is out of gas with a full tank all fit a supply restriction, and on an X MR those symptoms get charged to a wet air filter or drowned electrics long before anyone looks at the fuel hose.
Fuel Delivery on the X MR
Know the system before you buy anything. This machine is fuel-injected, running the 800R Rotax V-twin with an electric pump module inside the fuel tank. There is no petcock, so nothing under the tank shuts flow off, and the hose supplying the throttle bodies remains pressurized after the key is out. The first thing you do in this job is relieve that pressure on purpose. The hose you install has to be rated for injection pressure, not the soft low-pressure line that works on a gravity-fed carburetor.
The X MR is a 4x4 with selectable two-wheel drive, and its mud-focused build adds the relocated intake and radiator plumbing that let it run in deep water. Combined with the front differential and its supporting structure, that makes the front of the chassis crowded. The procedure is identical to any other Outlander 800R, but the hose route uses more clips and clearance points than a two-wheel-drive quad would, so trace the whole path before disassembly.
Why These Hoses Wear Out
Fuel line degrades on a schedule set by time and environment. The plasticizers keeping the rubber supple migrate out of the wall over the years, heat cycling from the V-twin speeds it up, and once the hose is stiff, chassis vibration converts that stiffness into cracks. Dry, low-humidity regions accelerate the process because arid air draws moisture out of the rubber from the outside in.
Internally the culprit is ethanol. E10 pump gas attracts water into the fuel system and gradually breaks down the hose liner, and any stretch where the X MR sat unused with fuel in it adds gumming and softening. An X MR also faces something a trail quad does not: repeated submersion and mud packing, which abrades the hose exterior and corrodes clamps. Three mechanisms working at once is why age matters more than a quick glance at the hose.
Setting Up to Work Safely
- Rubber or nitrile gloves, since gasoline defats skin on contact
- A drain pan and a fuel-rated container for the line contents
- Injection-rated replacement hose in the original inside diameter
- New clamps in the correct style, because clamps on a machine that swims are frequently too corroded to reuse
- A quick-disconnect release tool if a locking coupler sits at the pump module
- Line-clamping pliers, standing in for the petcock this model does not have
- Hand tools for the seat and plastics, a sharp blade, and a stack of clean rags
Wash and dry the area around the tank first so you are not pushing sand into an open fitting. Then handle ventilation honestly: gasoline vapor is denser than air and gathers at floor level, exactly where your head ends up under the machine. Air movement has to be low to matter, so an open window above the bench does nothing. Work outside if the weather allows, or with the door fully raised and a fan across the floor. Clear out pilot lights, space heaters, grinders, and hot work lamps, and keep an extinguisher within reach.
Old Hose Out
Depressurize before touching a fitting. Pull the fuel pump fuse, crank briefly until the engine dies or refuses to catch, turn the key off, and disconnect the negative battery cable. Remove the seat and side panels so the tank and the hose heading back toward the throttle bodies are fully accessible.
Get the pan underneath and lay a rag over the first joint you open, because a depressurized hose still holds fuel. Slide clamps well clear of the connection before disturbing it, and expect a submerged worm-gear clamp to need cutting rather than loosening. Quick-connect couplers release by depressing the locking tabs squarely and pulling straight back; prying at an angle cracks brittle collars. Where varnish has glued the hose to a barb, a gentle twist usually breaks the bond, and if not, split the hose lengthwise and peel it off rather than damaging the fitting. Photograph the routing, all clips, and each clearance point near the front driveline before the last retainer releases.
New Hose In, Then Verify
Match the replacement to the original length. Extra hose rubs a frame tube or drifts toward hot exhaust, and offers no upside. Seat both ends completely onto their barbs and install them dry. No grease, no oil, no silicone on any sealing surface, since lubricant hands pressurized fuel a path to escape. Hot water for a few seconds is the only softening trick required.
Place new clamps just behind the raised bead at each fitting and tighten evenly, snug rather than crushed. If the tank end uses a self-locking quick-connect, push until it clicks and pull firmly to verify the latch caught; that fitting wants no clamp. Return the hose to every factory clip, and on a machine built for deep water make sure nothing is left dangling where debris can snag it.
Reinstall the fuse, Reconnect the battery, and cycle the key on and off several times without cranking so the pump pressurizes the circuit while the joints are still dry. That is your best look at a developing weep. Check both connections with a light and a bare fingertip, then start the engine and inspect again at idle before the plastics go back on. Keep in mind that this injected platform carries its fuel filter inside the tank with the pump assembly rather than inline on the visible hose, so lingering delivery problems after a clean install point at that module instead of the line you just fitted.
Related Shopping Categories
Shop Fuel Lines for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Fuel Line Clamps for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Petcocks for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Fuel Filters for a 2012 Can-Am Outlander 800R X MR ATV.
Shop Fuel Stabilizer for a 2012 Can-Am Outlander 800R X MR 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.