2006 Can Am Outlander 400 Fuel Pump: Complete Replacement Guide

If you own a 2006 Can Am Outlander 400 and your engine is struggling to start, sputtering under load, or dying at idle, the fuel pump is likely the culprit. This guide will help you identify the correct replacement pump, understand the differences between the mechanical and electric options for your specific model, and walk through the installation process step by step. By the end, you will know exactly which part number matches your machine and where to find a reliable replacement that will last.

The 2006 Can Am Outlander 400 uses a frame-mounted mechanical fuel pump in its carbureted configuration, not an in-tank electric pump. However, the 2006 model is also listed as one of the early years for the switch to EFI on certain versions, so you must verify which system your specific ATV uses before ordering parts. This guide covers both scenarios.

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Which Fuel Pump Does Your 2006 Outlander 400 Need?

Before buying anything, you need to confirm which fuel delivery system your machine has. The 2006 Can Am Outlander 400 was offered in both carbureted and EFI variants depending on the trim level and market.

1. Carbureted Models (Standard and XT trims)

• Uses an external, frame-mounted mechanical fuel pump.
• OEM part number: 707200183
• Later models (2007-2008 carbureted) also use part number 709000103.
• These pumps are low-pressure units that sit on the frame outside the fuel tank and are driven by engine vacuum or mechanical linkage.

2. EFI Models (Electronic Fuel Injection)

• Uses an in-tank electric fuel pump assembly.
• OEM part number: 703500771
• Also listed as 709000194 or 709000245 for some 2006-2011 EFI variants.
• These are high-pressure pumps that deliver fuel directly to the injectors.

How to tell which system you have? Look under the seat or at the throttle body. If you see a carburetor with a round air filter housing, you have the carbureted version. If you see a throttle body with electrical connectors and no carburetor bowl, you have EFI. Also check the frame near the rear brake; a small round metal pump mounted there indicates the mechanical style.

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Part Number Cross-Reference for the 2006 Model Year

The 2006 Can Am Outlander 400 falls into two distinct replacement categories. Pay close attention to the part numbers below because ordering the wrong one will waste your time and money.

For Carbureted 2006 Models:

For EFI 2006 Models:

Many online sellers list the 703500771 as compatible with 2006-2008 Outlander 400, 500, 650, and 800 models, so if you have the EFI version, this is the number to use.

Important note: Do not use the 707200183 part on an EFI model. The mechanical pump cannot generate enough pressure for fuel injectors, and the electric pump assembly will not bolt onto a carbureted frame.

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Symptoms of a Failing Fuel Pump on a 2006 Outlander 400

If you are reading this article, you probably already suspect a fuel delivery problem. Here are the most common warning signs that the fuel pump needs attention:

1. Hard starting

• The engine cranks for several seconds before firing.
• On carbureted models, you may need to prime the system manually.

2. Loss of power during acceleration

• The ATV feels sluggish, especially climbing hills or under load.
• The engine may stumble or hesitate when you open the throttle.

3. Intermittent stalling

• The machine dies at idle or when coming to a stop.
• It restarts after sitting for a few minutes, then stalls again.

4. No fuel reaching the carburetor or injectors

• If you disconnect the fuel line and crank the engine, no fuel flows.
• On carbureted models, checking for fuel flow is easier than on EFI systems.

5. Unusual noise from the fuel tank area (EFI models)

• A whining or buzzing sound from the tank suggests the electric pump is struggling.
• The pump should be quiet; loud noise means it is failing.

6. Low fuel pressure reading

• If you have a fuel pressure gauge, an EFI 2006 Outlander 400 should read around 40-50 psi at the rail.
• A mechanical pump on carbureted models should produce 2-4 psi.
• Readings below these numbers mean the pump is weak.

Before condemning the pump, check the fuel pump relay and wiring harness first. A faulty relay is a common cause of no fuel delivery on Can-Am ATVs, and it is much cheaper to fix. Swap the relay with another one from the fuse box to test it.

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Step-by-Step Replacement Instructions for a 2006 Can Am Outlander 400

Replacing the fuel pump is a manageable DIY job if you are comfortable with basic tools and safety precautions. The exact steps differ slightly between the carbureted and EFI versions, so follow the instructions that match your machine.

Safety First

• Work in a well-ventilated area away from open flames or sparks.
• Disconnect the negative battery cable before starting.
• Have a fire extinguisher nearby.
• Wear safety glasses and gloves.
• Relieve fuel pressure by removing the fuel pump fuse and cranking the engine for a few seconds (EFI models only).

For Carbureted Models (Mechanical Pump, Part 707200183)

1. Locate the pump

• The mechanical pump is mounted on the frame near the fuel tank, often behind a plastic cover.
• It has two fuel lines and sometimes a vacuum line connected to it.

2. Disconnect the lines

• Use a line wrench to loosen the fittings.
• Be prepared for a small amount of fuel to spill; have rags ready.
• Label each line so you know which one goes where during reinstallation.

3. Remove the old pump

• Unbolt the pump from the frame using a socket or wrench.
• Pull the pump free and compare it to the new one to ensure a match.

4. Install the new pump

• Bolt the new pump in place using the original hardware.
• Reconnect the fuel lines exactly as they were.
• If your replacement pump came with a new seal ring, install it before mounting.

5. Test the system

• Reconnect the battery.
• Turn the key to the ON position and listen for the pump. On mechanical pumps, you will not hear anything until the engine is cranking.
• Start the engine and check for leaks around the pump fittings.

For EFI Models (In-Tank Electric Pump, Part 703500771)

1. Access the pump

• The fuel pump is inside the fuel tank.
• Remove the rear seat and any plastic covers to access the top of the tank.
• Some models have an access panel; on others, you must drop the tank.

2. Disconnect the electrical harness

• Unplug the wiring connector from the pump module.
• Remove the fuel lines using a flare nut wrench.

3. Remove the locking ring

• Use a specialized fuel pump removal tool or a hammer and brass punch to rotate the locking ring counterclockwise.
• Lift the pump module out of the tank carefully, as it will still contain some fuel.

4. Replace the pump assembly

• Transfer the rubber gasket and any spacers from the old module to the new one.
• Lower the new module into the tank, making sure the float arm is not bent.
• Replace the locking ring and tighten it securely.

5. Reconnect everything

• Plug in the electrical connector.
• Reattach the fuel lines.
• Reinstall the access panel or fuel tank and reconnect the battery.

6. Prime the system

• Turn the key to the ON position for three seconds, then OFF. Repeat this cycle three times to pressurize the system.
• Check for leaks before starting the engine.

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Why Choose KEMSO for Your Fuel Pump Replacement

When it comes time to buy a replacement fuel pump, you want a product that delivers high performance, a perfect OEM fit, and long-term reliability — all backed by a warranty. That is exactly what KEMSO offers.

KEMSO specializes in aftermarket fuel pumps for cars, motorcycles, ATVs, and UTVs. Their pumps are high-performance units designed as direct OEM replacements, meaning they bolt in just like the factory part without modifications.

Here is what sets KEMSO apart:

1. High-Performance Engineering. KEMSO fuel pumps are built to exceed factory specifications. For example, their in-tank pumps support up to 200 liters per hour, while many original pumps only flow 60-80 LPH. This means your ATV gets a consistent, strong fuel supply even under demanding conditions.

2. True OEM Replacement Fit. You do not need adapter kits or special wiring. KEMSO pumps match the dimensions, electrical connectors, and mounting points of the original part. It is a straightforward swap.

3. Lifetime Warranty. KEMSO backs every pump with a lifetime free replacement warranty. If your pump ever fails due to a manufacturing defect, you get a new one at no cost. That confidence is rare in the automotive parts industry.

4. Ethanol Compatible. KEMSO pumps are designed for modern gasoline blended with ethanol, which is common at American gas stations. Their upgraded polymers and brushes resist corrosion and wear from ethanol fuel, so you get a longer service life.

5. American Support. KEMSO's support team is based in the USA, so you get fast, helpful assistance if you have any questions during installation or troubleshooting.

Visit the KEMSO website today to find the right fuel pump for your Can Am Outlander 400 and many other vehicles:

https://www.kemsoracing.com/

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Frequently Asked Questions About the 2006 Outlander 400 Fuel Pump

Q: How do I know if my 2006 Outlander 400 is carbureted or EFI?

A: Look at the throttle body. If you see a metal carburetor with an air intake hose, it is carbureted. If you see a plastic throttle body with a large electrical connector, it is EFI. You can also check your VIN or owner's manual.

Q: Can I convert my carbureted Outlander 400 to EFI using a fuel pump upgrade?

A: Swapping from carburetor to EFI is a major project that requires a new intake manifold, wiring harness, ECU, and fuel tank. It is not a simple fuel pump upgrade. Stick with the pump your machine was designed for.

Q: How long should a replacement fuel pump last?

A: A quality aftermarket pump like KEMSO typically lasts 50,000 to 100,000 miles or 5-10 years, depending on fuel quality and riding conditions. Ethanol-blended fuel is harder on pumps, so using a pump designed for ethanol (like KEMSO) is wise.

Q: What is the fuel pressure spec for a 2006 Outlander 400?

A: For carbureted models, expect 2-4 psi from the mechanical pump. For EFI models, pressure should be around 40-50 psi at the fuel rail. Always verify with a gauge and consult your factory service manual.

Q: Can I install the fuel pump myself or should I hire a mechanic?

A: If you are comfortable using basic hand tools and following the steps above, you can install either type of pump yourself. The mechanical pump is the easier job. For EFI models, access to the in-tank pump is the biggest challenge, but still doable in a home garage.

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Final Thoughts on Replacing the Fuel Pump in a 2006 Can Am Outlander 400

The fuel pump is the heart of your ATV's fuel delivery system. When it fails, your machine is stranded. Whether you have the carbureted version with the mechanical pump (707200183) or the EFI version with the in-tank electric pump (703500771), replacing it is a straightforward job that will restore your Outlander to full working order.

Start by confirming your model's configuration, order the correct replacement part, and follow the installation steps carefully. If you want a pump that offers better performance, an OEM-true fit, ethanol compatibility, and a lifetime warranty, KEMSO is the smart choice. Their high-performance pumps are trusted by ATV owners across the United States.

Visit KEMSO Raccing today: https://www.kemsoracing.com/

With a reliable new fuel pump installed, you can get back to what matters most — riding your Can Am Outlander 400 with confidence on the trails.