How to Replace a Cracked Fuel Line on the 2019 CFMOTO CFORCE 800 XC EPS
Shop parts for a 2019 CFMOTO CFORCE 800 XC EPS ATV.
The CFORCE 800 XC EPS was aimed at riders who wanted displacement and power steering in a utility package, and machines like this tend to get used hard. Several seasons in, the fuel hose feeding that V-twin has absorbed a great deal of heat and vibration, and replacing it is one of the more worthwhile hours you can spend under the bodywork of a 2019 model.
Signs Your Hose Is Overdue
- A small puddle or damp patch under the frame after the quad has been parked overnight
- A sharp gasoline smell near the tank that does not clear as the engine cools
- Cracks in the outer surface, chalky rubber, or a hardened section that feels glassy when pinched
- Bogging under load, a lean stumble at higher rpm, or behavior resembling a nearly empty tank
- A dark, grit-caked ring at a fitting where fuel has been weeping and drying over time
One thing to remember on this machine is that the supply circuit runs under pressure, so a small breach may mist fuel that evaporates before it ever reaches the ground. If the quad smells like gasoline and nothing is visibly wet, take that seriously and inspect the hose by hand from end to end.
Injection Means No Petcock
The 2019 CFORCE 800 XC EPS uses an 800cc liquid-cooled V-twin with electronic fuel injection. There is no petcock lever beneath the tank because fuel is not gravity fed; an electric pump inside the tank pressurizes the line to the throttle body, and that pressure persists after shutdown. Relieving it is the first thing you do, and line-clamping pliers take the place of the shutoff valve this platform simply does not have. Buy hose rated for injection pressure rather than soft general-purpose line.
The XC also runs selectable 2WD/4WD with electronic power steering, so a front differential, driveshaft, and steering assist hardware crowd the area ahead of the engine. The fuel hose consequently follows a guarded route with several frame clearance points along the way. Photograph the routing and clips before anything comes loose.
Where the Rubber Goes Wrong
Heat cycling is the main mechanism. Fuel line depends on plasticizers to stay pliable, and every warm-and-cool cycle drives a little more of that out of the rubber. Over several seasons the hose becomes stiff, then brittle, and chassis vibration opens fine cracks at the bends. Owners in dry, low-humidity regions see this arrive earlier, since dry air pulls residual moisture out of the hose wall and hardens the surface.
Ethanol-blended pump gas works from the inside out. E10 draws water into the fuel system and gradually degrades the hose liner, so the interior can be softening and shedding material while the outside looks perfectly serviceable. Fuel standing unused for months adds gum and varnish deposits at the barbs. Because so much of the damage happens where you cannot see it, hose age is the more dependable guide to replacement.
What to Collect Before Starting
- Rubber or nitrile gloves
- Injection-rated fuel hose in the factory inside diameter
- A sealable container approved for gasoline
- Fresh clamps matching the originals, plus a quick-disconnect release tool if a locking coupler is used
- Line-clamping pliers
- Sockets, a screwdriver, a razor blade, and clean rags
The ventilation warning is a real one. Gasoline vapor is heavier than air, so it pools at floor level and drifts along the ground toward pilot lights, chargers, and extension cords rather than escaping through a window. Work outside when you can. Indoors, open the overhead door completely, shut down anything with a flame or spark, and cap the drain container as soon as fuel is in it.
Taking the Line Off
Begin with pressure relief: pull the fuel pump fuse or relay, crank the starter briefly until the engine stalls, key off, then disconnect the negative battery terminal. Remove the seat and the side plastics that block the tank outlet, then trace the hose toward the throttle body. Slide a drain pan under the first fitting and hold a rag over it as you break the joint, because residual fuel remains even without pressure.
Back each clamp well down the hose before disturbing the fitting. A quick-connect coupler releases when both tabs are pressed evenly and the connector is pulled straight back, and prying it sideways will crack plastic that has grown brittle with heat. If the hose has varnished itself onto a barb, twist it gently to break the bond, and if it refuses to let go, slit it lengthwise with a blade and peel it off so the fitting survives untouched.
Installing New Hose and Verifying the Seal
Trim the replacement to match the original length exactly, since slack invites chafing on frame tabs and a short piece loads both fittings. Push each end fully onto its barb working completely dry. Grease, oil, and silicone all belong nowhere near a fuel fitting, because any lubricant on the sealing surface gives pressurized fuel a route past the clamp. Warm water on the hose end for a few seconds makes a tight fit manageable.
Position new clamps just behind the raised bead on each fitting and tighten them evenly, snug rather than crushing. A self-locking quick-connect gets no clamp at all; push it until you hear it click, then pull to confirm the latch. Reroute the hose through every factory clip so it stays clear of exhaust heat and the front driveline components.
Now prove the work. Reinstall the fuse, Reconnect the battery, and cycle the key on and off several times without cranking so the pump pressurizes the line while both joints are still dry. Wipe each connection with a clean rag and inspect closely, then run the engine at idle for several minutes and look again before the plastics go back on. Keep in mind as well that the fuel filter on this injected XC lives inside the tank as part of the pump assembly rather than inline on the visible hose, so if delivery still feels weak after a leak-free installation, that module is the next place to check.
Related Shopping Categories
Shop Fuel Lines for a 2019 CFMOTO CFORCE 800 XC EPS ATV.
Shop Fuel Line Clamps for a 2019 CFMOTO CFORCE 800 XC EPS ATV.
Shop Petcocks for a 2019 CFMOTO CFORCE 800 XC EPS ATV.
Shop Fuel Filters for a 2019 CFMOTO CFORCE 800 XC EPS ATV.
Shop Fuel Stabilizer for a 2019 CFMOTO CFORCE 800 XC EPS 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.