Re: Vintage Outboard Gas Tanks

[20mercman]

The Mercury pressure tank was used from 53 through 55 for the Mk-15 & Mk-20. The 20H also ran on a pressure tank, but it was 3 1/2 gallon. Mercury used up extra pressure tanks in 55 with the Mk-25 and other motors set up with a single line and a trigger type pump instead of a ball. We had one on our Mk-25 that used to give my dad fits. Eventually converted it to a ball for priming and it worked much better.

Steve