Suzuki Outboard Filters & Strainers

Suzuki Filters and Strainers - Resources & Information

PartsVu.com is happy to offer a wide selection of certified Suzuki Outboard Filters and Strainers– including Suzuki oil filters, Suzuki fuel filters, Suzuki water separating filters, and more – to match the exact specifications of your Suzuki outboard motor. We also stock Suzuki Outboard Parts and Tools to simplify your Suzuki outboard maintenance.

In addition to Suzuki Outboard Filters & Strainers, PartsVu is also proud to help boaters by providing helpful resources for Suzuki outboard motors:

• Suzuki Outboard Engine Oil Capacities & Oil Filter Chart
• Suzuki Outboard Engine Gear Lube Capacity Chart
• Suzuki Outboard 100-Hour Service Checklist
• Suzuki Outboard Season Breakout Guide

Suzuki Outboard Filters & Strainers FAQ

What are common Suzuki outboard engine fuel system issues?

One of the most common ways your Suzuki outboard motor will break down is a fuel system failure. Whether you’re experiencing an intermittent bog down, poor performance, or complete engine failure, your fuel system is a common culprit.

1. Ethanol gasoline: Only use premium low-ethanol gasoline for your Suzuki outboard motor. The reason is that ethanol attracts water, causing fuel to dilute through “phase separation.” Additionally, ethanol gasoline can also gunk up fuel lines and fuel system components due to additives used. To help prevent these issues, regularly use a high-quality fuel stabilizer and other Suzuki fuel additives (such as Suzuki ECSTAR Fuel Conditioner & Water Remover).
2. Fuel lines: Check your fuel lines. If you discover any breaks or leaks, you should stop using the engine and make any necessary replacements. Also, take a look at any fuel hoses with an interior liner.
3. Fuel filters: The Suzuki fuel filter is designed to catch any debris and contaminants that have entered your fuel system. Regularly replace your fuel filters to keep fuel running freely.
4. Fuel pump: A malfunctioning Suzuki fuel pump can significantly reduce engine performance and, over time, severely damage other components. If your fuel pump is not working correctly, replace it and any hoses that may have been affected.

Should I have my Suzuki outboard oil tested by a lab?

Several laboratories provide performance testing of used ECSTAR Suzuki oils, allowing you to learn more about the health of your engine. Blackstone Labs is one such provider, and they have a convenient mail-in kit that includes everything you need to submit an oil sample. They can also test Suzuki outboard gear oils, hydraulic fluids, and oils from your other vehicles or toys. 

The results from your oil and fuel filters can tip you off to an accelerated wear condition inside of your engine long before any other symptoms show up. If you still want to know more about your engine, purchase an oil filter cutter and open the spent filter to look for evidence of contamination and metal dust or shavings. 

Once you have inspected your spent Suzuki ECSTAR oil and filter, set them aside for proper disposal. If you removed the drain screw to empty your oil, carefully reinstall the drain plug. The new oil filter should be removed from its package and the o-ring lubricated with a thin coat of fresh engine oil. Spin on the new oil filter and gently tighten to seat the o-ring without over-torquing.

Loosen the oil fill plug on the top of the engine and pour in fresh Suzuki ECSTAR engine oil (the best oil for Suzuki outboard engines). We recommend adding slightly less than the stated capacity. With the engine trimmed down, check the oil level on the dipstick after allowing a few minutes for the oil to drain into the oil pan properly. Filling the oil to the lower level on the dipstick will help you to measure if the oil level changes over time with the engine in operation.

What are the most popular filters that PartsVu sells?

The following are some of the most popular Suzuki filters and their model types:

• Suzuki DF200 oil filter
• Suzuki DF115 fuel filter
• Suzuki DF150 fuel filter
• Suzuki DF250 fuel filter
• Suzuki DF250 oil filter
• Suzuki DF90 fuel filter

Be sure to use our Suzuki Outboard Engine Oil Capacities & Oil Filter Chart, as well as your Suzuki owner’s manual to find your engine’s specific parts #’s. Not all filters and strainers fit all models and years, so it’s best to use a guide to be sure. 

What is the difference between a primary filter and an in-line filter?

This Suzuki fuel filter is typically on the front, side, or rear of the powerhead, and is usually made of plastic you can see through. It filters fuel coming into the outboard. This “primary” filter usually features a small water trap at the bottom of the cup. This is the first filter after the 10-micron filter, so if there’s water in here, it’s time to change your 10-micron. On Suzuki outboards, there may be a red ring visible inside this filter. Don’t ever remove it. If it’s floating, you’ve got water in this filter’s trap and it time for a change.

Some models have an in-line filter between the Suzuki primary fuel pump and the VST (vapor separator tank) and/or in the fuel line between the VST and the fuel rail, located along the top of the outboard. Refer to your service manual or contact your dealer for the exact location for your model. 

How do I service my Suzuki 4-stroke outboard fuel system? 

Depending on your application and style of boat, your Suzuki fuel system may include a fuel-water separating filter. If you have not seen one, follow the routing of your fuel hose from the engine rigging tube backward through the boat. These vary in shape and manufacturer, so be sure to order the identical replacement size for the best fit. Verado owners may not have an inline filter as the engine has a water separator under the cowling.

Use a filter wrench to loosen the existing filter element and use caution when removing it as it will be filled with gasoline. A clear plastic or glass container is helpful to dump the filter and examine the contents. A small amount of debris is common, as is a small amount of water after the fuel has had a moment to settle. More significant amounts of water would warrant further investigation.

If your filter’s mounting location allows it, pre-fill the replacement filter with some gasoline to make re-priming the fuel system easier. It is also advisable to use a small amount of grease or engine oil to lubricate the o-ring before installation. Spin on and hand tighten only about a half turn to snug.

Move back to the engine and locate the filter element(s) on the engine. The scope of this service will only include the low-pressure fuel filter and fuel water separator if applicable by model. Suzuki recommends that owners do not service their high-pressure fuel filters. Depending on your engine model, the water separator filter (or castle filter) may be removed by using a wrench, standard tools, and a little caution. Unplug the water-in-fuel sensor if applicable and spin the cap off of the housing. Replace the filter element with a fresh one, lube the o-ring with grease or oil, and carefully reinstall the cap.

For most other models, the low-pressure fuel filter is inline where the fuel supply line passes down the side of the cowling. On applicable models, locate the Schrader valve on the fuel system. Cover the valve with a rag or towel and depress the valve stem to vent the pressure from the system before service. With the pressure vented, remove the inline filter and replace it with a new one paying particular attention to locate the clamps or zip ties securing the hoses to the filter.

Locate your engine’s primer bulb if applicable and use the primer to pump up the fuel system. You should feel and hear gasoline entering and filling the filter cup. Check for leaks and prime until the bulb becomes firm.

If you are not already regularly running Suzuki ECSTAR Fuel Injector Cleaner (for fuel injected engines) or Suzuki ECSTAR Fuel Conditioner & Water Remover through your Suzuki fuel system, the 100-hour service interval is an excellent time for a “shock treatment.” 

Suzuki ECSTAR Fuel Injector Cleaner is a fuel system cleaner and top-lube that will help to clean deposits from the tank, lines, carburetors, injectors, and pumps. It breaks up fuel system varnish and will help to prevent gumming.

Suzuki ECSTAR Fuel Conditioner & Water Remover is a fuel system conditioner that also helps to remove carbon deposits. It prevents phase separation that draws water into the engine, while also removing any moisture in the fuel system to prevent corrosion. 

How do I perform a 100-hour service on my Suzuki outboard engine?

To ensure proper engine function, it’s always best to service your Suzuki outboard engine every 100 hours after the initial break-in period (first 10 hours) and after the first maintenance interval (at 20 hours). 

The following is a Suzuki outboard 100-hour service checklist to help you service your engine properly:

If you want a more in-depth explanation of how to perform a 100-hour service on a Suzuki outboard engine, read our blog “Suzuki Outboard 100-Hour Service Checklist”. Also, be sure to refer to your Suzuki Outboard Service Manual for which parts you’ll need, how to perform basic repairs, and other engine-specific tasks

To make engine maintenance even easier, PartsVu has a wide selection of Suzuki outboard engine 100-hour service kits available. They’re pre-assembled with everything you need to keep your boat happy and healthy every 100 hours.