Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: How to drain a tank

Posted by iankeller on 08/07/10 - 2:15 PM
#1

I have a 19 gallon tank that sits under my Montauk RPS. Tempo brand it seems. I'm trying to drain it fully so I can air it out and make sure it's free of water before refilling with fresh gas.

Trouble is that the filler neck is not the lowest point when I invert it so I'm never going to get all the gas out. Is there a trick to this that's escaping me?

Posted by DWinter on 08/07/10 - 5:15 PM
#2

When we pump out tanks, we use a small electric fuel pump with a long rubber hose attached so we can get any fuel that may stay in the corners or recesses of the tanks. You could accomplish the same thing with a manual pump, you'd just have to mate up some extra hose to fit your need.

Posted by OutrageAzzurri81 on 08/07/10 - 5:26 PM
#3

i went to bass pro shop (i was really there to buy my reels) and found a "fluid extractor". it worked great! solved my problem. i had about 3 gallons of water in my tank before we took it out on the maiden voyage. not good.

Posted by iankeller on 08/07/10 - 6:04 PM
#4

OK thanks - thought there might be a trick to it but I guess it just needs to be pumped or siphoned out.

Also, my cap is slightly cracked around the threads. Are replacements easy to find?

Posted by Meridian on 08/08/10 - 7:27 AM
#5

I got a replacement cap at walmart

Posted by DWinter on 08/08/10 - 8:00 AM
#6

The standard tempo caps are pretty easy to find. Most larger boating retailers that sell tanks have the caps also

Posted by Tom W Clark on 08/08/10 - 9:51 AM
#7

You can also remove a fuel fitting or the withdrawal tube and use that hole to drain the fuel form the inverted tank.

With tanks that you cannot get the last drop out of I use a flexible grabber tool with a wads paper towel on the end. It will absorb the last few ounces of gas and you can just keep using fresh paper towels until you get it all.

http://www.idealtruevalue.com/servlet...067/Detail

The technique also has the advantage of allowing you to swap the inside of the tank out and examine what comes out on the paper towel.

I lay the soaked paper towels out in the driveway and let them evaporate before throwing them in the trash. Gasoline is very volatile so it does not take long.