Changing the Fuel Line on Your 2016 Honda Rancher 420 4x4 with Power Steering
Shop parts for a 2016 Honda Rancher 420 4X4 POWER STEERING (FM2) ATV.
Set the job up properly and this is a straightforward afternoon repair. Rush into it and you will be mopping gasoline off the floor. The 2016 Rancher 420 uses electronic fuel injection, which means an in tank pump keeps the supply line pressurized, there is no petcock to shut off, and the hose you are replacing must be rated for that pressure rather than being ordinary carburetor tubing. Everything below is built around those facts.
Assembling the Right Gear
Gather this before touching a fitting:
- Nitrile or rubber gloves and safety glasses
- A wide drain pan and an approved container for the fuel you capture
- Replacement hose rated for fuel injection pressure and matched to the factory inside diameter
- Clamps that suit the fittings on your machine, plus a quick connect release tool if the tank end uses a locking coupler
- Line clamping pliers, which stand in for the petcock this model does not have
- A razor knife, sockets and drivers for the seat and plastics, and a generous pile of rags
A Genuine Word About Gasoline
Gasoline vapor is heavier than air. It rolls off the machine, spreads along the floor, and settles in low spots right where you are kneeling, which is why an open window above the bench does almost nothing for you. Roll the Rancher outside or open the overhead door and get airflow moving at ground level. Shut off water heaters and any appliance with a standing pilot flame, keep grinders, torches, and battery chargers out of the area, and skip the old incandescent trouble light in favor of a sealed LED. Wear the gloves rather than degreasing your hands in fuel afterward, and keep an extinguisher within arm's reach for the whole job.
Why These Hoses Give Out
The rubber in a fuel line depends on plasticizers to remain flexible, and repeated heat cycles pull those out of the compound over the years. The hose grows stiff, loses its ability to absorb vibration, and starts to split where it is stretched over a barb or squeezed under a clamp. Because those are exactly the spots a clamp conceals, plenty of failing lines look perfect until you slide the hardware back.
Two outside forces speed this up. Dry, low humidity climates draw moisture from the hose wall and stiffen it noticeably faster than damp conditions do. Ethanol blended fuel works the opposite way, sitting in the line during unused stretches, absorbing moisture, and slowly breaking down the inner liner into gum and loose particles. On an injected Rancher those particles travel toward tight passages, so interior degradation carries real consequences even when the exterior still looks sound.
Symptoms That Justify Pulling the Panels
Any of the following means it is time to inspect:
- Fuel puddled beneath the quad or a fresh stain on the floor where it parks
- A gasoline smell that is strongest right after you switch the engine off
- Surface cracking, a chalky bloom, or a hardened length you can feel by squeezing the hose
- Bogging on a pull, a stumble at higher rpm, or symptoms that imitate low fuel
- Dust caked into a ring at a fitting, which is dried evidence of a slow weep
Keep in mind that a pressurized leak may never form a drip. Fuel forced out of a small crack often atomizes and evaporates on the spot, so a smell without a puddle is still a real finding on this machine.
Relieving Pressure and Removing the Hose
Begin by taking the pressure out of the system. Pull the fuel pump fuse or relay, crank the engine briefly until it stalls from lack of fuel, switch the key off, and disconnect the battery negative cable. Only then should a fitting come apart. Take the seat off, remove the panels shielding the tank and the run toward the throttle body, slide the pan into position, and drape a rag over the first joint you open, since residual fuel remains in the line even at zero pressure.
Move any clamp well back along the hose before disturbing the fitting. Release a quick connect by pressing its locking tabs squarely and pulling straight off, never by prying sideways, because the plastic collar grows brittle with age. Twist the hose on the barb to break the varnish bond rather than pulling hard, and slit a truly stuck hose lengthwise so it peels off without stressing the fitting. Record the routing and every clip as it comes out. Being a 4x4, this Rancher routes the line past front differential hardware and through extra frame clearance points that a two wheel drive quad does not have.
Fitting the New Line and Checking for Leaks
Trim the replacement to match the original length so it neither sags into the frame nor pulls at the fittings. Seat each end completely, pushing until it bottoms against the shoulder, and do all of it dry. No grease, oil, or silicone touches a fuel fitting on this machine, because any lubricant there gives pressurized fuel a route past the seal and can be carried into the injection system. If a hose end fights you, dip it in hot water for a few seconds. Place new clamps just behind the raised bead on each fitting and tighten them evenly. A self locking quick connect gets no clamp at all, just a firm push until the collar clicks and a solid tug to verify it latched. Reseat the hose in its factory clips, well away from the exhaust and the front driveline.
Reinstall the pump fuse, Reconnect the battery, and cycle the key on and off several times without starting the engine. Each cycle pressurizes the circuit and lets you inspect both connections while they are still dry. Fire it up afterward, wipe the joints with a clean rag, and watch them at idle for a few minutes before the plastics go back on. Finally, remember that the filter on this injected Rancher lives inside the tank with the pump rather than inline on the hose, so lingering fuel delivery complaints after a clean install point in there rather than at your new line.
Related Shopping Categories
Shop Fuel Lines for a 2016 Honda Rancher 420 4X4 POWER STEERING (FM2) ATV.
Shop Fuel Line Clamps for a 2016 Honda Rancher 420 4X4 POWER STEERING (FM2) ATV.
Shop Petcocks for a 2016 Honda Rancher 420 4X4 POWER STEERING (FM2) ATV.
Shop Fuel Filters for a 2016 Honda Rancher 420 4X4 POWER STEERING (FM2) ATV.
Shop Fuel Stabilizer for a 2016 Honda Rancher 420 4X4 POWER STEERING (FM2) 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.