The Ultimate Guide to the Can-Am Outlander 570/Max 570 Fuel Pump (2016 2017 2018 2019 2020 2021): Maintenance, Symptoms, and Replacement

For owners of the Can-Am Outlander 570 and Outlander Max 570 from model years 2016 2017 2018 2019 2020 2021, a failing fuel pump is one of the most critical and disruptive mechanical issues you can encounter. This component is the heart of your ATV's fuel system, and its failure will stop your machine dead in its tracks. This comprehensive guide provides all the practical information you need to understand, diagnose, maintain, and replace the fuel pump on these specific models, ensuring you can keep your Outlander running reliably for years to come.

The fuel pump in your Can-Am Outlander 570 is an electric, in-tank module. Its job is to draw fuel from the tank and deliver it at a consistent, high pressure to the electronic fuel injectors in the engine. Unlike older mechanical pumps, this electric pump is controlled by the ATV's Electronic Control Unit (ECU). It activates when you turn the key to the "on" position, priming the system for starting. For the 570cc Rotax engine, maintaining correct fuel pressure is non-negotiable for proper performance, fuel economy, and starting reliability.

Recognizing the Symptoms of a Failing Fuel Pump
Catching fuel pump problems early can prevent you from being stranded. Here are the key signs to watch for across your 2016 2017 2018 2019 2020 2021 Outlander 570:

1. Difficulty Starting or Extended Cranking: This is the most common symptom. The engine cranks normally but does not fire. You may need to turn the key on and off several times to hear the pump prime before it will start. In later stages, it may not start at all.
2. Engine Sputtering or Loss of Power Under Load: The pump may provide enough fuel at idle but cannot keep up with the engine's demand during acceleration, climbing hills, or towing. The ATV will feel like it's surging or losing power, then recovering.
3. Engine Stalling at Idle or Low Speeds: Intermittent loss of fuel pressure can cause the engine to suddenly die when coming to a stop or idling, after which it may restart normally.
4. Unusual Noise from the Fuel Tank: Listen for a loud whining, humming, or buzzing sound coming from beneath the seat when you turn the key on. A healthy pump should emit a brief, subdued hum. A loud or continuous noise indicates a pump working harder than it should.
5. Check Engine Light: While not always present, a failing pump can trigger diagnostic trouble codes (DTCs) related to fuel system pressure or lean air/fuel ratios.

Diagnostic Steps Before Replacing the Pump
Before spending money on a new pump, perform these checks to confirm it is the culprit. Many symptoms can mimic other issues like a clogged fuel filter, bad spark plugs, or a faulty fuel injector.

1. Check for Fuel Pump Operation: Turn the key to the "ON" position (do not start the engine). You should hear a distinct humming sound from the fuel tank area for 2-3 seconds as the pump primes the system. If you hear nothing, the pump may not be receiving power or has failed.

2. Test Fuel Pressure: This is the most definitive test. You will need a fuel pressure test gauge with the correct adapter for the Schrader valve on the Outlander 570's fuel rail. With the key on, pressure should quickly rise and hold steady at a specification typically between 35-45 PSI (consult your service manual for the exact value). Pressure that is too low, builds slowly, or drops quickly after the pump shuts off indicates a failing pump or a leaking pressure regulator.

3. Inspect Electrical Connections: The pump receives power through a connector under the seat or directly on the tank. Check this connector for corrosion, bent pins, or loose wires. Also, check the main fuse and relay for the fuel pump in the ATV's fuse box. A simple blown fuse can cause a no-start.

Maintenance Tips to Extend Fuel Pump Life
The leading cause of premature electric fuel pump failure is running the ATV on a consistently low fuel level and contamination. Follow these practices:

• Keep the Fuel Tank Above 1/4 Full: The gasoline in the tank cools and lubricates the electric pump motor. Constantly running on a near-empty tank causes the pump to overheat and wear out faster. Make it a habit to refuel when you hit the quarter-tank mark.
• Use Clean, Quality Fuel: Contaminants and water in gasoline can damage the pump's internal components. Purchase fuel from reputable stations. If the ATV will be stored for more than 30 days, use a fuel stabilizer.
• Replace the In-Line Fuel Filter: The Can-Am Outlander 570 has an external, in-line fuel filter. While the in-tank pump has a coarse sock filter, this main filter catches smaller particles. A clogged filter forces the pump to work harder. Replace this filter at the intervals specified in your owner's manual.

Choosing a Replacement Fuel Pump for Your Outlander 570
When replacement is necessary, you have several options for your 2016 2017 2018 2019 2020 2021 model.

OEM (Original Equipment Manufacturer) Pump: This is the exact pump assembly made by Can-Am's supplier. It guarantees a perfect fit and performance identical to the original. The part number is crucial. While the 570 models across these years share the same basic assembly, always double-check the part number with your VIN or specific model year to ensure compatibility. OEM parts offer reliability but are typically the most expensive option.

High-Quality Aftermarket Replacement: Several reputable aftermarket manufacturers produce complete fuel pump modules designed as direct replacements. Brands like Quantum Fuel Systems, Delphi, and All Balls Powersports offer units that often meet or exceed OEM specifications, sometimes at a lower cost. Look for kits that include the pump, strainer sock, locking ring, and seals for a complete solution.

Pump-Only Replacement: In some cases, only the electric pump motor inside the assembly has failed. You can purchase a universal-style electric fuel pump that matches the flow rate and pressure specifications, then install it into your existing pump housing. This requires careful disassembly and is more labor-intensive but can be the most budget-friendly approach.

Step-by-Step Guide to Replacing the Fuel Pump
Replacing the pump is a manageable task for a DIY mechanic with basic tools. Always work in a well-ventilated area, away from sparks or open flames. Relieve fuel system pressure by carefully loosening the Schrader valve on the fuel rail with a rag covering it.

1. Access the Fuel Pump: The pump is located inside the fuel tank, which is under the seat. Remove the seat. You will see a large circular plastic access plate on top of the fuel tank, held down by screws or a locking ring.

2. Disconnect Electrical and Fuel Lines: Carefully disconnect the electrical connector to the pump module. Use a flathead screwdriver to depress the quick-connect tabs on the fuel supply line (and return line if present) and pull them off. Have rags ready to catch any spilled fuel.

3. Remove the Pump Module: Using a spanner wrench or a large screwdriver and hammer, turn the large plastic locking ring counter-clockwise to unlock it. Lift the entire pump and level sender assembly out of the tank. Take note of how it sits and the orientation of the fuel level float arm.

4. Transfer Components or Install New Module: If using a complete new module, you can simply swap it in. If reusing your housing with a new pump, carefully disconnect the old pump from the hoses and electrical terminals inside the assembly and transfer the new pump in its place. Ensure all internal hoses are clamped securely.

5. Reassembly: Lower the new or rebuilt module into the tank, ensuring the float arm moves freely. Align the tabs and hand-tighten the locking ring. Reconnect the fuel lines until they click and the electrical connector. Before replacing the seat, turn the key on to check for leaks and listen for the pump's normal priming sound. Start the engine and verify proper operation.

Troubleshooting After Replacement
If the ATV doesn't start after a pump replacement, double-check a few things. Ensure the electrical connector is fully seated and the fuse/relay are good. Verify that the fuel lines are connected to the correct ports (supply vs. return). Confirm that the locking ring is fully seated and the pump is not hanging above the bottom of the tank. A simple mistake in reassembly is often the cause.

By understanding the role of the fuel pump, recognizing its failure symptoms, and performing proactive maintenance, you can ensure your Can-Am Outlander 570 or Outlander Max 570 from the 2016 2017 2018 2019 2020 2021 model years delivers the dependable power and adventure it was built for. When the time comes, a methodical diagnosis and careful replacement will get you back on the trail with confidence.