1999 2520 fuel tank removal

[eric_1]

Well it looks like I need to remove the tank (126 gallon) and replace it as it has a bunch of gunk on the bottom and has had water in it for some time. We are putting new motors on it and pulled the sending unit out to inspect the tank and wow what a mess.
Can anyone help me with the exact locations to cut out the floor and where to get the new tank. I don’t think it’s cleanable, at least without removing it. Thanks

 

[warthog5]

I would not pull the tank.....I would clean the tank.

Start with a electric fuel pump rigged with a large filter like a racor style. I have a old style carpenters tool box I built...The pump, filter and hoses are mounted to it.
Then you need clean plastic 55gal drums....Then you need a fuel/water separating filter.
With sender removed. and a length of copper tubing. Boat bow elevated so fuel is at back of tank.
Suck fuel from the aft corners it will go the the filter and with the special funnel sitting atop the 55gal drums into the drums.

Filter will pick up dirt and trap it....funnel will separate water...You will need to dump off that water once in a while.

Now tank is empty. Now add 5gals of fresh clean fuel with this added to it double dose.
Let sit overnight.....Next lower Bow on trailer so fuel runs to front of tank. Let sit overnight. Raise Bow again.....Suck that mess out. Now Do it again with fresh 5gal and adding Star Tron......raising and lowering Bow overnight.


Next change the filter on fuel pump. Using the fuel/water funnel again....pump the fuel back into the tank. Add Star Tron to that fuel.

Yes...This process will take a bunch of days.....Cheaper and faster than a tank change. Obviously change the boat filters also. Mark date on filters when you change them.

I've done this to several boats. You want a fuel pump that delivers at least 100GPH.

EDIT:......looking at those pixs closely ....have several filters to change out on your pump rig.

 

[eric_1]

I would not pull the tank.....I would clean the tank.

Start with a electric fuel pump rigged with a large filter like a racor style. I have a old style carpenters tool box I built...The pump, filter and hoses are mounted to it.
Then you need clean plastic 55gal drums....Then you need a fuel/water separating filter.
With sender removed. and a length of copper tubing. Boat bow elevated so fuel is at back of tank.
Suck fuel from the aft corners it will go the the filter and with the special funnel sitting atop the 55gal drums into the drums.

Filter will pick up dirt and trap it....funnel will separate water...You will need to dump off that water once in a while.

Now tank is empty. Now add 5gals of fresh clean fuel with this added to it double dose.
Let sit overnight.....Next lower Bow on trailer so fuel runs to front of tank. Let sit overnight. Raise Bow again.....Suck that mess out. Now Do it again with fresh 5gal and adding Star Tron......raising and lowering Bow overnight.


Next change the filter on fuel pump. Using the fuel/water funnel again....pump the fuel back into the tank. Add Star Tron to that fuel.

Yes...This process will take a bunch of days.....Cheaper and faster than a tank change. Obviously change the boat filters also. Mark date on filters when you change them.

I've done this to several boats. You want a fuel pump that delivers at least 100GPH.

EDIT:......looking at those pixs closely ....have several filters to change out on your pump rig.

I appreciate your ideas but I’m afraid I’ll never get it clean with the amount of sludge we can scrape off the bottom just us a long extension. Putting brand new 200’s($34,000) on her so we can cruise offshore in confidence.
any other advice out there? I’ve got a mechanic who is capable of doing either job.

 

[MHC_Parker2520_2005]

I would not pull the tank.....I would clean the tank.

Start with a electric fuel pump rigged with a large filter like a racor style. I have a old style carpenters tool box I built...The pump, filter and hoses are mounted to it.
Then you need clean plastic 55gal drums....Then you need a fuel/water separating filter.
With sender removed. and a length of copper tubing. Boat bow elevated so fuel is at back of tank.
Suck fuel from the aft corners it will go the the filter and with the special funnel sitting atop the 55gal drums into the drums.

Filter will pick up dirt and trap it....funnel will separate water...You will need to dump off that water once in a while.

Now tank is empty. Now add 5gals of fresh clean fuel with this added to it double dose.
Let sit overnight.....Next lower Bow on trailer so fuel runs to front of tank. Let sit overnight. Raise Bow again.....Suck that mess out. Now Do it again with fresh 5gal and adding Star Tron......raising and lowering Bow overnight.


Next change the filter on fuel pump. Using the fuel/water funnel again....pump the fuel back into the tank. Add Star Tron to that fuel.

Yes...This process will take a bunch of days.....Cheaper and faster than a tank change. Obviously change the boat filters also. Mark date on filters when you change them.

I've done this to several boats. You want a fuel pump that delivers at least 100GPH.

EDIT:......looking at those pixs closely ....have several filters to change out on your pump rig.

@warthog5 Thinking about doing this with the fuel tank on my 2005 Parker 2520. I believe its a 140 gallon tank that is currently full. So you do a Racor after the fuel pump into a funnel. Are you using a fuel filter funnel or just a regular funnel with a separate fuel filter attached to it before it goes in the drums?

When using the Star Tron what ratio of fuel (5 gallons of fuel in this case) to Star Tron are you typically using?

What is the double dose part?

Are you expecting to just remove the debris that collects at the bottom or does the Star Tron also clean up corrosion?

 

[warthog5]

So you do a Racor after the fuel pump into a funnel. Are you using a fuel filter funnel or just a regular funnel with a separate fuel filter attached to it before it goes in the drums?

Racor you refer to is a regular marine mount and screw on filter.... But If you use one with a seperator and watch it...... You could help in removing water by draining it off.

Fuel Funnel / Filter =https://www.amazon.com/Mr-Funnel-AF...c04-9e87-abb447023005&pd_rd_i=B000SOKE5E&th=1

Double dose refers to twice as much fuel tank cleaner added to that 5gals. Read directions on bottle.

Startron will not fix corrosion.

 

[99Parker2520]

Just an FYI....my 99 2520 had a 174 gallon tank that I replaced. Not sure why yours would be different on the same boat

 

[TimC2520]

DV vs MV

 

[John_Madison CT]

My 2002 2520DV has a 174 gallon fuel tank.