Mercury Fuel Filters

Mercury Marine Engine Fuel Filters Resources and Information

PartsVu.com is happy to offer a wide selection of certified Mercury marine engine fuel filters and strainers to match the exact specifications of your Mercury outboard motor. If you need assistance servicing your Mercury outboard’s fuel system, follow along with this helpful guide over on our blog. 

Browse the rest of our complete selection of Mercury outboard parts, or shop our list of fuel filter categories, including: 

• MerCruiser Fuel Filters
• Mercury Outboard Fuel Filters
• Outboard Water Separating Fuel Filters and Kits
• Mercruiser Water Separating Gasoline Fuel Filter
• Mercury Mercruiser Water Separating Diesel Fuel Filters
• Mercury Fuel Filter Multipacks

Mercury Outboard Fuel Filters FAQs

Why is it Important to Change the Fuel Filter in a Mercury Outboard?

The fuel filter in a Mercury outboard plays a crucial role in maintaining the engine’s performance and longevity. Here are a few reasons why it’s essential to change your Mercury in-line fuel filter regularly:

• Contaminant Removal: The fuel filter traps impurities such as dirt, debris, rust particles, and other contaminants that may be present in the fuel. Over time, these impurities can clog the filter, restricting the fuel flow and causing fuel starvation to the engine.

• Engine Protection: A clogged or dirty fuel filter can lead to an inadequate fuel supply. That can result in engine misfires, rough idling, reduced power output, and even engine stalling. Replacing the fuel filter ensures a consistent flow of clean fuel, which helps protect the engine from potential damage.

• Fuel Efficiency: A clean outboard fuel filter allows for proper fuel flow, ensuring that the engine receives the right amount of fuel for optimal combustion. Using a clean filter improves fuel efficiency, preventing waste and saving you money on fuel costs.

• Longevity of System Components: Your outboard’s fuel filter protects the precision components in modern outboard motors with many critical moving parts. Contaminants in the fuel can damage these sensitive parts, leading to expensive repairs. Regularly changing the fuel filter helps prolong the lifespan of these crucial elements.

Regular outboard fuel filter inspection and maintenance ensures smooth operation and avoids potential engine issues caused by a clogged or malfunctioning fuel filter.

What are the Signs that Indicate the Need to Replace the Fuel Filter?

Several signs indicate the need to replace the fuel filter in your Mercury outboard. Look out for the following indicators:

1. Engine Stalling: If your engine frequently stalls or struggles to maintain a steady idle, it could be a sign of a clogged fuel filter impeding proper fuel flow.

2. Reduced Power and Performance: A dirty or clogged fuel filter can restrict the fuel supply. That will lead to decreased engine power, sluggish acceleration, and overall poor performance.

3. Difficulty Starting the Engine: If you experience difficulty starting your outboard motor, especially after running, it could be due to a clogged fuel filter impeding fuel delivery.

4. Fuel System Issues: Contaminants in the fuel can cause issues with the fuel system, including fuel pump failure or fuel injector problems. A failing fuel filter can contribute to these issues, necessitating a replacement.

5. Increased Fuel Consumption: A clogged fuel filter can cause inefficient combustion and fuel consumption. If you notice a sudden decrease in fuel efficiency, it might be time to replace the fuel filter.

It is crucial to be attentive to these signs and consistently inspect and replace the fuel filter as a vital aspect of your maintenance routine to ensure your Mercury outboard’s smooth and trouble-free operation.

How Often Should the Fuel Filter Be Replaced in a Mercury Outboard?

Mercury in-line fuel filter replacement frequency depends on several factors, including usage and environmental conditions. As a general guideline, it is recommended to replace the fuel filter after every 100 hours of engine operation or at least once a year, whichever comes first. However, suppose you frequently operate your outboard in a dusty or dirty environment or notice any signs of fuel-related issues. In that case, you should regularly inspect and replace the fuel filter. Regular maintenance and adherence to the manufacturer’s recommendations will help ensure the proper functioning of your Mercury outboard and extend the lifespan of the fuel system components.

What are the Steps for Changing a Mercury In-Line Fuel Filter?

Here is a step-by-step guide on how to change a Mercury outboard in-line fuel filter.

1. Locate the in-line fuel filter: Look for the filter assembly, which typically has a little red clip to release both sides of the filter.
2. Set a Paper Towel Drip Barrier: Place paper towels or rags directly below the filter to catch any fuel that may drip to prevent fuel spills during the filter removal.
3. Release the filter: Use the flathead screwdriver to press the red clip and release both sides of the filter. Push it in firmly and then try to move it to pop it off.
4. Catch excess fuel: Place your thumb over the filter to prevent fuel from spilling upon removal.
5. Remove the old filter: Once the filter pops out, carefully pull it out while keeping your thumb on it to contain any remaining fuel.
6. Inspect the filters: Look at the old filter for any signs of oil contamination.
7. Check the arrow: The filter will have an arrow indicating the direction of fuel flow. Install the new filter with the arrow facing the correct way.
8. Install the new fuel filter: Align the new filter with the fuel line and press it firmly into place on both sides. You should hear and feel a click when it is securely installed.
9. Clean up: Dispose of the old filter properly and clean any spilled fuel. Use paper towels or rags to wipe down any surfaces.

Following these steps, you can change the in-line fuel filter on your Mercury outboard and maintain a clean fuel system for optimal performance.

Taking the time to perform this simple maintenance task of changing the in-line fuel filter in your Mercury outboard will ensure a clean fuel system and help keep your engine running at its best.

What are the Signs of a Clogged or Faulty Fuel-Water Separating Filter?

Recognizing the signs of a clogged or faulty fuel-water separating filter is essential for maintaining the performance and longevity of your outboard engine. Here are some indicators that may suggest it’s time to replace the filter:

• Engine Misfires or Stalling: A clogged filter restricts the fuel flow, causing the engine to misfire or stall. If you notice your engine hesitating, lacking power, or struggling to maintain a consistent speed, it could be a sign of a clogged filter.

• Difficulty Starting the Engine: A filter at the end of its life may make it harder to start the engine. If you experience prolonged cranking or difficulty getting the engine to fire up, it’s worth inspecting the fuel/water separator filter.

• Reduced Fuel Efficiency: A decrease in fuel efficiency is another potential sign of a clogged filter. When the filter is obstructed, the engine may not receive enough fuel, leading to increased fuel consumption and reduced mileage.

• Irregular Engine Idling: A clogged or faulty filter can cause the engine to idle erratically or inconsistently. If you notice the engine idling roughly or experiencing fluctuations in RPM, it may be due to a compromised fuel/water separator filter.

If you observe any of these signs, it is advisable to inspect and replace the fuel-water separator filter promptly. Regularly monitoring the filter’s condition and being proactive

How often should I check my Mercury 2 stroke outboard fuel filter?

Mercury Marine recommends checking and replacing your fuel filter(s) regularly to ensure that your Mercury 2-stroke outboard engine runs smoothly and efficiently. The frequency of checks and replacements may vary depending on the model and age of your engine, as well as your usage patterns and environmental factors.

As a general rule of thumb, it's a good idea to check your fuel filter(s) every 50 hours of operation or at least once a year, whichever comes first. If you operate your boat in harsh conditions, such as dirty or dusty environments, or if you frequently use your boat at high speeds, you may need to check your fuel filter(s) more often.

Additionally, if you notice any signs of engine performance issues, such as rough idling, poor acceleration, or stalling, it may be a sign that your fuel filter(s) need to be checked or replaced. It's also important to replace your fuel filter(s) if they become clogged or damaged.

Why are Mercury outboard fuel filter multipacks are cheaper in the long run?

Outboard fuel filter multipacks are cheaper in the long run because they offer a bulk purchase discount compared to buying individual filters. By purchasing a multipack, boaters can save money on the cost of each filter and also reduce the frequency of trips to the store to purchase replacement filters. Additionally, by having a few spare filters on hand, boaters can quickly replace a clogged filter on the water and avoid costly repairs caused by fuel system problems. Overall, purchasing a multipack of outboard fuel filters is a cost-effective and convenient solution for maintaining a boat's fuel system.

Can I use Yamaha fuel filters for Mercury?

It is not recommended to use Yamaha fuel filters for Mercury engines. While some parts may appear similar, each engine manufacturer designs their filters to specific tolerances and specifications, and using the wrong filter can lead to engine damage or poor performance. It is best to use the recommended Mercury fuel filter for your specific engine model.

How many fuel filters on 2013 Mercury 115hp outboard?

The 2013 Mercury 115hp outboard typically has two fuel filters. One is located inside the vapor separator tank (VST) and the other is located in-line between the fuel pump and the fuel rail. It is important to regularly replace these filters to ensure proper engine performance and prevent damage to the fuel system.

How to remove fuel injector filters on Mercury Optimax?

To remove the fuel injector filters on a Mercury Optimax, first turn off the engine and disconnect the battery. Locate the fuel rail and follow it to the fuel injector where the filter is located. Use a fuel line disconnect tool to remove the fuel line from the injector. Then, carefully remove the filter from the injector using a small pair of pliers. Be sure to replace the filter with a new one of the same size and type, and reattach the fuel line before restarting the engine.

Can I use Mercruiser outboard fuel filters as a Mercury outboard fuel filter replacement?

While Mercruiser outboard fuel filters may look similar to Mercury outboard fuel filters, it is not recommended to use them as a replacement. Each engine manufacturer designs their filters to meet specific requirements and tolerances, and using the wrong filter can lead to poor engine performance or even engine damage. It is important to use the recommended fuel filter for your specific engine model, which can be found in the engine manual or by consulting a qualified mechanic or dealer. Proper fuel filtration is essential to maintaining a healthy fuel system and ensuring reliable engine performance.

What's the differeence between a fuel filter Mercury Outboard recommends versus aftermarket brands?

The main difference between a fuel filter recommended fuel filter for Mercury outboard engines and an aftermarket brand is that the recommended filter is specifically designed and tested to meet the requirements of Mercury outboard engines. These filters are engineered to provide the necessary level of filtration and flow rate to maintain optimal engine performance and fuel efficiency. They are also tested to ensure they meet stringent standards for durability and reliability in marine environments. Aftermarket filters may not meet the same standards and may not be designed to the same specifications as the recommended filter, which can lead to poor engine performance, decreased fuel efficiency, or even engine damage. While aftermarket filters may be less expensive, using the recommended filter is the best way to ensure the longevity and performance of your Mercury outboard engine.

Does my outboard have more than one Mercury in line fuel filter?

The amount of Mercury inline fuel filters depends on the specific model and year of your Mercury outboard engine. Some models may have more than one in-line fuel filter, while others may only have one. Additionally, some models may have a fuel/water separating filter located in the vapor separator tank (VST) or in a remote filter housing. The number and location of fuel filters can be found in the engine manual or by consulting a qualified mechanic or dealer. It is important to regularly inspect and replace all fuel filters according to the recommended maintenance schedule to ensure proper engine performance and avoid fuel system problems.

What is the shelf life for Mercury fuel filters?

The shelf life of Mercury fuel filters can vary depending on the specific filter model and storage conditions. In general, fuel filters should be stored in a cool, dry place away from direct sunlight and high humidity. When stored under these conditions, most Mercury fuel filters can last up to 5 years without any significant loss of performance or degradation. However, it is important to check the expiration date on the filter packaging or consult the engine manual to ensure that the filter is still within its recommended shelf life. Additionally, if a filter has been exposed to moisture or other contaminants during storage, it should be replaced regardless of its age to avoid fuel system problems.

How do I cross reference Mercury to Baldwin fuel filters?

To cross reference Mercury to Baldwin fuel filters, you will need to know the Mercury filter part number or engine model number. Baldwin offers a cross-reference tool on their website that allows you to search for compatible filters by entering the Mercury filter number or engine model. Simply navigate to the Baldwin Filters website and click on the "Cross-Reference Search" tab. Enter the Mercury filter number or engine model in the search bar and select "Fuel Filters" from the filter category dropdown. The tool will then generate a list of compatible Baldwin filters for your engine. It is important to verify that the recommended Baldwin filter meets the same specifications and performance standards as the original Mercury filter to ensure proper engine performance and fuel system protection.

How long does it take to install fuel filters on 2012 Mercury 115hp four stroke?

The time it takes to install fuel filters on a 2012 Mercury 115hp four-stroke outboard can vary depending on the experience level of the person performing the installation and the specific installation process for that engine model. In general, replacing the in-line fuel filter on this engine typically takes less than 30 minutes to complete. However, if the fuel/water separating filter located in the vapor separator tank (VST) or in a remote filter housing needs to be replaced, the installation process can take longer, up to an hour or more. It is important to refer to the engine manual or consult a qualified mechanic or dealer to ensure that the installation is performed correctly and in accordance with the recommended maintenance schedule.

What should I do before I decide to change Mercury 90hp 4 stroke fuel injection fuel filters?

Before deciding to change the fuel filters on your Mercury 90hp 4-stroke fuel-injected engine, there are a few things you should do to diagnose whether or not the filters are the cause of any problems you are experiencing.

First, check for any visible signs of contamination in the fuel system, such as water, debris, or discoloration. This can indicate that the filters are clogged and need to be replaced.

Next, monitor the engine's performance to see if there are any signs of fuel system problems, such as stalling, rough idling, or decreased fuel efficiency. These issues can also be caused by clogged or dirty fuel filters, but they can also be symptoms of other issues with the fuel system.

If you suspect that the fuel filters are clogged or dirty, you can perform a fuel pressure test to confirm this. This involves attaching a pressure gauge to the fuel system and measuring the pressure while the engine is running. If the pressure is lower than the recommended range, it may be a sign that the filters are clogged and need to be replaced.

Overall, it is important to diagnose the cause of any fuel system problems before deciding to replace the fuel filters, as this can save time and money and ensure that the underlying issue is properly addressed. If you are unsure about performing these diagnostic tests yourself, it is recommended to consult a qualified mechanic or dealer for assistance.

What are Mercury ELTP90 fuel filters?

Mercury ELPT90 is not a specific type of fuel filter, but rather a designation for a Mercury outboard engine model. ELPT stands for "Electric Start, Long Shaft, Power Trim," while 90 refers to the engine's horsepower rating.

However, like all gasoline-powered outboard engines, the Mercury ELPT90 requires fuel filters to protect the fuel system from contaminants and ensure proper engine performance. The specific type and location of fuel filters for this engine can vary depending on the model year and type of fuel system, but they typically include one or more in-line fuel filters and a fuel/water separating filter located in the vapor separator tank (VST) or in a remote filter housing.

How to remove fuel filter on Mercury outboard engines safely?

Here are the general steps to safely remove Mercury marine fuel filters on a Mercury outboard engine:

1. Turn off the engine and disconnect the battery cables.
2. Locate the fuel filter on your engine. Refer to your owner's manual or consult a qualified marine technician if you are unsure where the fuel filter is located.
3. If the fuel filter is connected by hoses, clamp off the hoses on either side of the filter to prevent fuel from leaking out when you remove the filter.
4. Use a fuel line disconnect tool to disconnect the fuel line from the filter. Some filters may also have a retaining clip or screw that needs to be removed.
5. Carefully remove the fuel filter from its mounting bracket, being careful not to spill any fuel that may be in the filter.
6. Inspect the filter for signs of damage or wear. If the filter is clogged or damaged, it should be replaced with a new filter.
7. Clean the mounting bracket and any other components that came in contact with the filter.
8. Install the new filter in the mounting bracket and reconnect the fuel line. Make sure that the fuel line is securely connected and tightened.
9. Remove the clamps from the hoses (if applicable).
10. Reconnect the battery cables and start the engine. Check for any fuel leaks or other issues before taking your boat out on the water.

It's important to follow all safety precautions when working with Mercury fuel filters for outboards and to handle fuel and fuel-related components carefully to prevent fires or explosions. If you are unsure about any aspect of removing or replacing the fuel filter on your Mercury outboard engine, it's recommended to consult a qualified marine technician.

What are the main differences between a Mercury 40 hp fuel filter, a Mercury 60 hp 4 stroke fuel filter, and a Mercury 90 hp 4 stroke fuel filter?

The main differences between the Mercury 40 hp fuel filter, the Mercury 60 hp 4-stroke fuel filter, and the Mercury 90 hp 4-stroke fuel filter are:

1. Size and capacity: The size and capacity of the fuel filters may differ between the different engine models. A larger engine may require a larger fuel filter to accommodate its higher fuel consumption.
2. Type of filter: The type of filter used in each engine may vary depending on the model and year of manufacture. Some engines may use a spin-on filter, while others may use an in-line filter.
3. Filtration rating: The filtration rating of the fuel filters may differ, with some filters having a higher rating than others. A higher filtration rating means that the filter is more effective at removing impurities from the fuel.
4. Compatibility: Each engine model may require a specific fuel filter that is designed to work with that particular engine. It's essential to use the correct fuel filter to ensure that it fits properly and functions correctly.
5. Maintenance schedule: The recommended maintenance schedule for the fuel filters may differ depending on the engine model. Some engines may require more frequent inspections and replacements than others.

It's important to consult your owner's manual or a qualified marine technician to ensure that you are using the correct fuel filter(s) for your engine and to follow the recommended maintenance schedule to keep your engine running smoothly and efficiently.

What is the recommended schedule for replacing Mercury outboard fuel filters, oil filters, and other filters?

The recommended schedule for replacing the fuel filters, oil filters, and other filters on a Mercury outboard engine may vary depending on the engine model, year of manufacture, and usage patterns. It's important to refer to your owner's manual or consult a qualified marine technician for specific recommendations for your engine.

Here are some general guidelines for replacing the most common filters on Mercury outboard engines:

1. Fuel filter: The fuel filter should be checked every 50 hours of operation or at least once a year, whichever comes first. If you notice any signs of engine performance issues, such as rough idling, poor acceleration, or stalling, it may be a sign that your fuel filter needs to be checked or replaced. Additionally, if the fuel filter becomes clogged or damaged, it should be replaced immediately.
2. Oil filter: The oil filter should be replaced every 100 hours of operation or once a year, whichever comes first. If you use your boat in harsh conditions, such as dirty or dusty environments, you may need to replace the oil filter more frequently. It's also important to change the oil at regular intervals according to the recommended schedule in your owner's manual.
3. Air filter: The air filter should be inspected every 50 hours of operation or at least once a year, whichever comes first. If the air filter becomes clogged or dirty, it should be replaced immediately to prevent engine damage.
4. Water separator filter: If your engine is equipped with a water separator filter, it should be checked and drained every 50 hours of operation or at least once a year, whichever comes first. If you notice any signs of water contamination in the fuel, such as engine misfires or rough running, the water separator filter should be checked immediately.

Again, these are general guidelines, and the recommended schedule for replacing filters on your Mercury outboard engine may differ depending on your engine model and usage patterns.

What is the recommended schedule for Mercury 2 stroke outboard fuel filter replacement (or specifically for a Mercury 40 hp outboard fuel filter replacement?

The recommended schedule for Mercury 2 stroke outboard fuel filter replacement may vary depending on the engine model, year of manufacture, and usage patterns. However, for a Mercury 40 hp outboard engine, it's generally recommended to check the fuel filter every 50 hours of operation or at least once a year, whichever comes first. If you notice any signs of engine performance issues, such as rough idling, poor acceleration, or stalling, it may be a sign that your fuel filter needs to be checked or replaced. Additionally, if the fuel filter becomes clogged or damaged, it should be replaced immediately to prevent engine damage. It's important to refer to your owner's manual or consult a qualified marine technician for specific recommendations for your engine.

What is the parts number for 2013 115hp Mercury 4 stroke fuel filters?

The specific part number for the fuel filter on a 2013 115hp Mercury 4-stroke outboard engine may vary depending on the engine's exact model and other factors. However, a common 2013 Mercury 115hp fuel filters part number is 35-877565T1.

What are the model numbers for 2001 Mercury EFI fuel filters?

The specific model numbers for the 2001 Mercury EFI fuel filters may vary depending on the exact model of your engine. However, for the 2001 model year, some common Mercury EFI outboard engine models include the 150, 175, 200, 225, 250, and 300 horsepower models. The fuel filters for these engines may have different part numbers depending on the specific engine model and other factors such as whether it has a Verado or Optimax engine.

Does Mercury still manufacture parts for 2001 Mercury EFI fuel filters replacement?

Yes, Mercury still manufactures parts for 2001 Mercury EFI fuel filters replacement. Mercury has a long-standing reputation for providing parts and service support for their engines, including older models. However, it's important to note that specific parts availability may vary depending on the exact model and year of your engine. It's recommended to consult your local Mercury dealer or a qualified marine technician to determine the specific parts needed for your engine and to ensure that they are available.

What are Mercury 150 optimax fuel filters?

Mercury 150 Optimax fuel filters are filters designed to remove impurities from the fuel before it reaches the engine in Mercury 150 Optimax outboard motors. The purpose of these filters is to protect the engine from damage caused by contaminants in the fuel, such as dirt, debris, and water.

There are typically two fuel filters on a Mercury 150 Optimax outboard motor. The first is an inline fuel filter located between the fuel tank and the engine. This filter removes larger impurities before the fuel enters the engine. The second filter is a water-separating fuel filter that removes any remaining impurities, as well as water that may be present in the fuel.

Regularly replacing the fuel filters is essential to maintaining the performance and longevity of your Mercury 150 Optimax outboard motor. It's important to use genuine Mercury fuel filters that are designed specifically for your engine model to ensure optimal performance and protection.

What are the fuel filter recommendations for the most popular Mercury outboard engines?

For fuel filters for 4 stroke 50 hp Mercury outboards and replacement fuel filters for 4 stroke 50 hp Mercury outboards, it is recommended to check and replace the fuel filter every 100 hours of operation or once a year, whichever comes first. The specific part number may vary depending on the exact model and year of your engine, but they can be found through authorized Mercury dealers or online retailers.

For 2014 Mercury fourstroke 90hp fuel filters, the recommended replacement schedule may vary depending on usage patterns and other factors. It's important to consult the owner's manual or a qualified Mercury dealer or marine technician to determine the appropriate replacement schedule and the correct part number for the fuel filter.

Similarly, for fuel filters on 2014 Mercury 150hp outboard, the part numbers may vary depending on the specific engine model and year. It's important to consult the owner's manual or a qualified Mercury dealer or marine technician to determine the correct part number and replacement schedule for your engine's fuel filter.

Where can I learn more about Mercury Fuel Filters?

PartsVu understands that boaters want to learn how to perform their own Mercury outboard maintenance. From maintaining your Mercury outboard, Mercury sterndrive, and MerCruiser engines, there’s always something new to learn and save money. That’s why PartsVu offers our comprehensive blog, The PartsVu Xchange. 

Read up on the latest developments in boating, as well as search for everything you need to know about Mercury fuel system maintenance.

To get you off to a good start, these are some of the most important articles DIY boater maintenance:

• Mercury Fuel System – 4-Stroke 100-Hour Service
• How to Tell if Your Outboard Fuel Pump is Bad
• How Racor Fuel Filters Address Outboard Engine ...
• How to Select the Right Mercury Outboard Parts