M25XP Electric Fuel Lift Pump

kloudie1 · Jan 4, 2017

Best source is Maine Sail's excellent "How To" site.. there is a lot of great info on his site.. contribute a coupla dollars while you are there..
http://www.pbase.com/mainecruising/facet_fuel_pump_filter

LeslieTroyer · Jan 4, 2017

Stu Jackson also has a TON of good info on the Universal M25 series engines at his Catalina 34 site http://c34.org/wikiwp/

Stu Jackson · Jan 4, 2017

womble, you put a socket or adjustable wrench on the nut on the bottom and just turn. Look carefully for the ears on the bottom lip of the pump body and the slots in the sides of the bottom.

If not done yet, the fuel should go: tank>Racor>pump. Most boats came backwards, so the pump filter was the first filter the fuel encountered, not so good given its size.

jibes138 · Jan 17, 2017

You can get the pumps and replacement filters at NAPA auto parts stores. The filter is just a coarse screen so it can be cleaned but it makes sense to keep a spare in case of damage. Also a good idea to have a spare pump.

Maine Sail · Jan 17, 2017

womble said:
As far as I can see, NAPA no longer carry the filter.
Can you link me to a replacement filter and pump please.

NAPA still has them I bought one in November and it was about $9.00 for the filter and gasket...

Stu Jackson · Jan 17, 2017

womble said:
As far as I can see, NAPA no longer carry the filter.
Can you link me to a replacement filter and pump please.

To add to MS's reply: you may have to actually go into a store, rather than being behind a keyboard. It's funny how that works sometimes. Really.

Good luck, let us know what you find.

Richard19068 · Jan 17, 2017

jibes138 said:
You can get the pumps and replacement filters at NAPA auto parts stores. The filter is just a coarse screen so it can be cleaned but it makes sense to keep a spare in case of damage. Also a good idea to have a spare pump.

do one of these fit?

https://www.pegasusautoracing.com/p...n=FAC-479729&gclid=CNfW3YPLytECFQt_fgodrLMAxg

https://www.pegasusautoracing.com/productdetails.asp?RecID=6040

jibes138 · Jan 17, 2017

Yeah those look like what you need. If your fuel system is set up with a primary filter upstream of the pump as required for Racor filters then the fuel will already be filtered much finer than either of these filters so the micron rating is kind of moot. My OEM arrangement had the pump first and after many years that screen was gunked up pretty bad, I rearranged the filters as recommended at the same time I replaced my fuel tank..

jibes138 · Jan 28, 2017

Shut off the fuel at the tank, there should be a shutoff valve on your supply line. Use a Ziploc bag under the hoses to catch any fuel that spills and a few paper towels or rags to wipe up any that escapes. Also a Ziploc bag under the filter should get most of it if you just remove the filter. Then tie the hoses off higher than the fuel tank or put plugs in them until ready to put back on the pump.

jibes138 · Jan 28, 2017

womble said:
On that site they have several replacement pumps - blue top, red top etc.. Which one do I need?

The Marine Diesel Direct web site for a M25XP specifies to use a facet # 476459 fuel pump. The link above carries them.

jibes138 · Jan 31, 2017

womble said:
Thank you Jibes 138.
That pump has 1.8" female NPT threads. Is that compatible with the M25XP?

I don't understand your question. Perhaps you meant to say 1/8" female NPT threads? My original pump had crimped fuel lines, if yours is the same just cut the hose and use barbed fittings with hose clamps on the new pump. Marine Diesel Direct has all of the parts lists for your motor on line. The pump I noted is right from the factory specification for your motor. I suggest you remove your pump and take it to a NAPA store and make sure the ports are the same size when you buy the new one if you aren't sure, otherwise you can always send it back. These pumps supply maybe 30 gallons per hour of fuel flow, you will probably burn a gallon an hour. So you don't need a very big port to provide adequate fuel for your motor. It looks to me like the pump is now mounted on the motor? On my boat with the M25 motor, the predecessor to the M25XP the pump is remotely mounted.

DruR · May 2, 2017

Have another question on this pump,,,
Should the pump start when the key switch is on? I am wanting to pump the remaining fuel from the tank before I change all the filters,,thought this would be a good way to accomplish that by pulling the hose from the outlet and adding a longer hose routed into a spare fuel can,,,

DruR · May 2, 2017

Thanks for the information & advice. I recently purchased this boat, it's not been used much and I wanted to get the old fuel out, change the filters and get clean fuel in there.

jibes138 · May 3, 2017

You probably should pump the fuel out of the tank in another way to make sure you get all the gunk that is at the very bottom of the tank. The fuel pick up tube won't normally go all the way to the bottom of the tank leaving just the stuff you want to get rid of that will contaminate your new fuel. Get a cheap transfer pump (tractor supply or NAPA have inexpensive 12V pumps)a few fittings and some fuel hose and go through the top of the tank by removing the sender if you have a fuel gage, or if you have a cleanout cover go through that and pump the fuel into some portable tanks. Try to get to the very lowest point in the tank, that's where any water will collect along with slime and other gunk. Fuel polisher guys will use the filtered fuel to "pressure wash" the inside of the tank, but you need special equipment, if you don't want a professional just go with the method I've noted. I put a filter in line with the transfer pump so it is filtered coming out of the tanks, and I use the same setup to fill the tank from portable jugs so new fuel is filtered going into the tank. You can also use a hand pump but if you have a lot of fuel you will be pumping a lot.

M25XP Electric Fuel Lift Pump

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