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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Diesel This is a new forum dedicated to diesel engines and their applicable accessories.


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Old 06-09-2014
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Fuel Filtration for Yanmar 2qm15

The fuel filter on my 2qm15 is rated for 10 to 15 microns. Ahead of that I have a racor filter. Is a 2 micron filter OK at this location or should it be 30 microns. Thanks
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Old 06-09-2014
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Re: Fuel Filtration for Yanmar 2qm15

Typical series fuel filtration for Yanmars: Tank --> 30ÁM Racor (if historically the 'downstream filter system' often fouls)--->10ÁM Racor---> 17ÁM (10-15ÁM is ok) engine mounted 'guard' filter ---> engine.

2ÁM is gross overkill, .... will need to be changed-out VERY frequently and/or will 'plug' easily if there is any excess contaminant, and will put an immense overload on the engine's lift pump.

Last edited by RichH; 06-09-2014 at 04:12 PM.
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Old 06-09-2014
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Re: Fuel Filtration for Yanmar 2qm15

On my 3GM30F I have a 30m Racor then the engine mounted filter. You want the first filter to remove the larger stuff so the next one can remove the finer stuff without plugging quickly.
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Re: Fuel Filtration for Yanmar 2qm15

Thanks for the replies. I've ordered the 30 micron filter
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