Regan Brown
It's important to know how often to replace your fuel water separator filter outboard. There is no clear consensus on how often to replace the filters, but some sources suggest changing them once or twice a year, while others recommend changing them whenever you do your motor maintenance.
| Characteristics | Values |
|---|---|
| How often to replace | Every 6 months to 1 year |
| How often to replace (hours) | Every 100-200 hours |
| How often to replace (gallons) | Every 100-200 gallons |
| How often to replace (hours on engine) | Every 10-50 hours |
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What You'll Learn
How often to replace the filter
There is no specific guidance on how often to replace the fuel water separator filter on an outboard motor. However, it is recommended to change the filter at least once a year, or every six months. Some people change their filters every season, or even twice a year. It is also recommended to replace the filter whenever you do your motor maintenance. The frequency with which you need to change the filter will depend on how clean or dirty/water-contaminated the fuel is that you use, and how many gallons your filter can "clean".
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How to know when to replace the filter
It is recommended that fuel water separator filters are replaced at least once a year, or even twice a year. This is because they are an added item that protects the quality of your boat's fuel. However, there is no specific guidance on how often to change the filters. It is also recommended that you replace the filters whenever you do your motor maintenance.
The frequency with which you need to replace the filter depends on how clean or dirty/water contaminated the fuel is that you use, and how many gallons you think your filter can "clean". If you put about 50 hours on your engine each year, you should change the filter annually. If you put 62 hours on your engine, you should change the filter twice a year. If you put 100-200 hours on your engine, you should change the filter every 100-200 hours.
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How to replace the filter
It is recommended that fuel water separator filters are replaced every 50 hours of use, or at least once a year. However, this depends on how contaminated the fuel is and how many gallons the filter can clean.
To replace the filter, first empty the old filter by pouring the gas into a large clear container. This will allow you to see what kind of gunk the filter has caught, and if there is any water. This will all sink to the bottom of the container and you can carefully refill the new filter with clean old fuel. Spin it back on and dispose of the old fuel and gunk in a correct manner.
You can also install a new fuel water separator kit from a reputable manufacturer. For an outboard fuel water separator, this generally means a filter equipped with a clear plastic collection bowl. For inboards, use a filter fitted with an aluminium bowl for gas, or a clear glass or plastic inspection bowl for diesel.
To install the kit, open hatches to ensure ventilation. Close the fuel valve at the tank and cut the supply hose at the mounting location, then drain the contents. Or, plug the line by inserting a bolt and securing with a hose clamp. Install the head unit vertically, above bilge water, between the tank and engine (or primer bulb if on an outboard). The hoses should reach the engine and tank without kinking or making sharp turns. Drill pilot holes in the mounting point, inject sealant and fasten with self-tapping stainless-steel screws.
Attach the hose from the tank to the “in” port and from the engine to the “out” port. Double-clamp firmly but don’t pinch the rubber hoses. If extra hose is needed, use U. S. Coast Guard-approved Type A1-15 of the same diameter as the hose it’s replacing. Start the engine and check for leaks at a fast idle, then sea-trial the system close to home at high rpm, watching closely for leaks all the while.
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How to maintain the filter
It is recommended that fuel water separator filters for outboards are replaced at least once a year, with some sources suggesting twice a year. The frequency of replacement will depend on how clean or dirty/water contaminated the fuel is, and how many gallons the filter can clean. It is also recommended to keep two or more extra filters around in case of bad fuel.
To maintain the filter, it is important to keep it clean and free of debris. This can be done by regularly checking and cleaning the filter, as well as draining any water or contaminants that may have built up. It is also a good idea to replace the filter whenever you do your motor maintenance.
Some sources suggest changing the filter every six months, while others recommend doing so once a season. It is also recommended to replace the filter if it has been a year since the last replacement. The motor service manual will also provide guidance on when to change the filters.
It is important to note that filters are relatively inexpensive and easy to change, so it is better to replace them more frequently to ensure the quality of the fuel and the proper functioning of the engine.
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How much does it cost to replace the filter
The cost of replacing a fuel water separator filter for an outboard motor depends on the type of filter and the brand. Filters can cost as little as $10 each, but a plastic cup for the filter can cost $88.
The frequency with which you should replace the filter depends on how clean or dirty/water contaminated the fuel is, and how many gallons the filter can clean. Some boat owners change their filters every six months, while others change them once a year. It is recommended to change the filter at least whenever you do your motor maintenance.
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Frequently asked questions
It is recommended that you replace your fuel water separator filter outboard at least once a year, or every 200 hours.
You should refer to your motor service manual to know when to change your filters.
Fuel water separator filters are relatively inexpensive, costing around $10 each.
If you don't replace your fuel water separator filter outboard often enough, it can become dirty or water-contaminated, which can affect the quality of your boat's fuel.
