2007 Arctic Cat 700 EFI Fuel Pump: Complete Replacement Guide for Owners

If you own a 2007 Arctic Cat 700 EFI and you are dealing with hard starting, sputtering at high speeds, or an engine that refuses to start altogether, the fuel pump is almost certainly the culprit. The 2007 Arctic Cat 700 EFI relies on an in-tank electric fuel pump assembly to deliver pressurized fuel to the throttle body, and when this component begins to fail, the symptoms are usually unmistakable. This guide walks you through everything you need to know about the 2007 Arctic Cat 700 EFI fuel pump, including how it works, what goes wrong, how to test it, and what replacement options you have—so you can get back on the trail without overpaying at the dealership.

Understanding the 2007 Arctic Cat 700 EFI Fuel Pump System

The 2007 Arctic Cat 700 EFI is powered by a 695cc single-cylinder engine, and its fuel delivery system is built around an electric pump that lives inside the fuel tank. This submerged design keeps the pump cool and quiet, but it also means the pump is exposed to everything that ends up in your gas tank, including water, dirt, and debris. The pump assembly is more than just the pump itself—it is a complete unit that includes several critical components working together.

The main parts of the 2007 Arctic Cat 700 EFI fuel pump assembly include:

  1. Electric fuel pump – This is the motor that draws fuel from the tank and pressurizes it. It uses a turbine or gerotor design to provide consistent pressure and flow.
  2. Fuel pressure regulator – This valve keeps fuel pressure steady at the injector, regardless of engine load. A faulty regulator can cause the engine to run too rich or too lean.
  3. Fuel strainer (sock) – A coarse filter at the pump inlet that catches large debris before it can enter the pump.
  4. Fuel filter – A finer filter that removes smaller contaminants from the fuel before it reaches the injector.
  5. Fuel level sending unit – This sensor tells your gauge how much fuel is in the tank. It is not directly part of fuel delivery, but it lives in the same assembly.

Because all of these parts are integrated into a single assembly that drops into the tank, replacing the 2007 Arctic Cat 700 EFI fuel pump usually means replacing the entire unit, not just the pump motor itself.

Common Symptoms of a Failing 2007 Arctic Cat 700 EFI Fuel Pump

A failing fuel pump does not usually quit all at once. It gives you warning signs first. Knowing these symptoms can save you from being stranded miles from the truck.

  1. Hard starting – If the pump is not building enough pressure, the engine may crank for a long time before it fires up. In some cases, it may not start at all.
  2. Engine sputtering or hesitation – If fuel pressure drops under load, the engine may sputter, surge, or hesitate, especially when climbing hills or hauling heavy loads.
  3. Loss of power – A weak pump cannot deliver enough fuel at wide-open throttle. This makes the engine feel flat and underpowered.
  4. No priming sound – When you turn the ignition key to the ON position, you should hear a brief whirring sound as the pump pressurizes the system. If you hear nothing, the pump is not running at all.
  5. Engine stalling – If the pump fails completely while riding, the engine will stall and will not restart until the pump cools down (or not at all).

Important note: Contaminated fuel is the number one cause of fuel pump failure. Water, dirt, and debris can clog the strainer and filter, overwork the pump motor, and eventually destroy it. Running the tank low on fuel regularly is another major cause of premature failure, because the pump relies on submersion in fuel to stay cool.

How to Test the 2007 Arctic Cat 700 EFI Fuel Pump

Before you spend money on a replacement, you can do a few simple tests to confirm that the pump is the problem. The 2007 Arctic Cat 700 EFI service manual provides a straightforward procedure.

Test 1: Listen for priming. Turn the ignition switch to the ON position and listen for a momentary whirring sound from the pump. If you hear it (it should run for about 10 seconds), the electrical side is fine and the pump is building pressure.

Test 2: Check fuel pressure. Disconnect the fuel hose from the throttle body and install a fuel pressure gauge. Turn the ignition to ON. The pressure should build until the pump shuts off, and it should read approximately 3.0 kg/cm² (about 43 psi).

Test 3: Check electrical supply. If the pump is silent, disconnect the fuel pump/tank sensor connector and use a multimeter to check for battery voltage at the red and black wires. Turn the ignition to ON. You should see battery voltage. If voltage is present but the pump does not run, the pump itself is dead and must be replaced. If there is no voltage, the problem may be in the ECU or the tilt sensor, not the pump.

What to Look For in a Replacement 2007 Arctic Cat 700 EFI Fuel Pump

The original equipment part numbers for the 2007 Arctic Cat 700 EFI fuel pump are 0570-139, 0570-207, and 0570-271. The 0570-139 was the original part, and it was later superseded first by 0570-271 and then by 0570-207. So when you go shopping for a replacement, you are looking for a pump that matches one of those part numbers.

Aftermarket replacement pumps fall into two general categories:

Pump-only replacements – These come with just the pump motor, plus some installation hardware like a strainer and hose clamps. You typically install the new pump into your existing fuel sending unit and regulator. This is a more affordable option, but it requires some mechanical work.

Complete assemblies – These include the pump, regulator, strainer, and sometimes the sending unit. They are easier to install because you simply swap the whole unit into the tank.

Fitment note: The 2007 Arctic Cat 700 EFI uses a Suzuki-built engine, while later 700 H1 models use an Arctic Cat engine. Be sure to confirm that the replacement pump you choose lists the 2007 700 EFI as a compatible application.

Why You Should Buy a KEMSO Fuel Pump for Your 2007 Arctic Cat 700 EFI

When it comes time to replace the fuel pump on your 2007 Arctic Cat 700 EFI, you want a product that is reliable, easy to install, and backed by a solid warranty. That is exactly what you get with KEMSO.

KEMSO fuel pumps are designed as high-performance, OEM replacement units. They are built to match or exceed the performance of your original pump. In fact, KEMSO pumps deliver over 20% more flow at 43 psi compared to a stock OEM pump, which means your Arctic Cat gets the fuel it needs even under the toughest riding conditions. The pumps are compatible with both gasoline and E85/ethanol blends, so you do not have to worry about fuel compatibility issues down the road.

Each KEMSO pump kit includes everything you need for a complete installation:

  1. The high-performance fuel pump – flow rate of 180 to 220 liters per hour at 43 psi, with an operating pressure range of 43 to 68 psi.
  2. Gradient density fuel strainers – five different strainers are included to cover a wide range of fitments.
  3. Rubber hose, wiring connector, tank seal, and metal clamps – all the hardware you need for the job.

Every KEMSO fuel pump comes with a lifetime free replacement warranty. If there is any issue of any kind at any time, you can contact KEMSO and they will replace the pump at no cost. That kind of protection gives you total peace of mind—especially when the pump sits at the bottom of a fuel tank where failure can strand you in the middle of nowhere.

To find the right KEMSO fuel pump for your 2007 Arctic Cat 700 EFI, visit the official KEMSO website today:

https://www.kemsoracing.com/

Step-by-Step Guide to Replacing the 2007 Arctic Cat 700 EFI Fuel Pump

Once you have confirmed that the fuel pump is bad and you have a replacement in hand, the actual swap is a manageable DIY job. Plan on spending a couple of hours, mostly on disassembly and reassembly of the plastic bodywork.

Tools you will need:

  • Socket set with extensions
  • Flathead screwdriver
  • Fuel line clamp
  • Shop towels and a catch pan
  • Duct tape (to cover the tank opening)
  • New fuel pump assembly

The removal process:

  1. Remove the rear rack and fenders. This gives you access to the fuel tank area. The service manual specifies removing these components before touching the fuel system.
  2. Disconnect the power supply and fuel gauge connector. This is the wiring harness that plugs into the top of the pump assembly.
  3. Remove the spring clamp and disconnect the fuel hose. Gasoline will be under pressure, so wrap a shop towel around the connection to catch any spray.
  4. Remove the screws securing the fuel pump to the tank. Before you lift the pump out, make a reference mark on both the pump and the tank so you can align the new pump correctly.
  5. Lift the pump assembly out carefully. Tilt it forward to clear the voltage regulator, then guide the float lever through the opening. Be very careful not to damage the float or float arm, because that could force you to buy a whole new assembly.
  6. Cover the tank opening with duct tape right away. This keeps dirt and debris out of the fuel system while you work.

The installation process:

  1. Transfer any needed components from the old assembly to the new one, such as the fuel level float if it is not already attached.
  2. Drop the new pump assembly into the tank, aligning your reference marks.
  3. Reinstall the mounting screws and tighten them evenly.
  4. Reconnect the fuel hose and secure it with the spring clamp.
  5. Reconnect the electrical connectors.
  6. Reinstall the rear rack and fenders.
  7. Turn the ignition to ON and listen for the pump to prime. Check for any fuel leaks before starting the engine.

Preventing Future Fuel Pump Problems

A fuel pump replacement is not something you want to do every year. Here are a few habits that will extend the life of your new 2007 Arctic Cat 700 EFI fuel pump:

  1. Keep the tank at least a quarter full. The pump relies on fuel to keep it cool. Running on empty regularly will overheat the pump motor and shorten its life.
  2. Use clean fuel from a reputable station. Water and dirt in fuel are the most common causes of pump failure. If you suspect bad fuel, drain the tank and replace the fuel filter before it damages the pump.
  3. Replace the fuel filter regularly. A clogged filter starves the pump and makes it work harder than it should. This is cheap insurance against an expensive failure.
  4. Store the ATV with a full tank of treated fuel. This prevents moisture from condensing inside the tank, which leads to rust and contamination.

Final Thoughts on the 2007 Arctic Cat 700 EFI Fuel Pump

The fuel pump on your 2007 Arctic Cat 700 EFI is a wear item. It will not last forever, and when it fails, the symptoms can be confusing. But with the right knowledge, you can diagnose the problem quickly, choose a quality replacement, and get the job done in your own garage in a few hours.

Here is a quick summary of what we covered:

  1. The 2007 Arctic Cat 700 EFI fuel pump lives inside the fuel tank and includes the pump, regulator, filter, and level sender.
  2. Common failure symptoms include hard starting, sputtering, loss of power, no priming sound, and stalling.
  3. Testing is straightforward – listen for priming, check fuel pressure (should be about 43 psi), and verify battery voltage at the connector.
  4. OEM part numbers are 0570-139, 0570-207, and 0570-271.
  5. A quality aftermarket pump like KEMSO delivers more flow, includes all installation hardware, and comes with a lifetime warranty.

Do not overpay at the dealership for a factory replacement when you have a better option. Visit https://www.kemsoracing.com/ to find the right KEMSO fuel pump for your 2007 Arctic Cat 700 EFI. With better performance, superior durability, and a lifetime warranty, KEMSO gives you the reliability you need so you can spend less time wrenching and more time riding.


Back to blog