Mercury Mark 20 Rebuild

[opposedtwin]

http://m.ebay.com/itm/282262567321?_mwB … noapp=true

[bwiggins1985]

I got my my new to me Mark 25 engine cover today. It looks like I will need to get a new connector and fuel line connector also. Here are the pictures… it looks like the old connector on the cowl is broken.

My tank has been working for a few days… I think I need a different battery charger…I will pick up one tomorrow. What do I need to do to the inside of the tank when I pull it out? I have read that it needs to be coated with oil. I also think there are a few small holes in the tank, what can I use to fix them? And lastly, has anyone reinforced the bottom of the metal gas tanks to make sure the bottom doesnt flex down too far? I was thinking of installing some steel square tubing across the bottom for added support because the bottom flexes pretty far when its full of liquid.

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[jpatti75]

As for the fuel connector, that’s a bummer! It might actually still do its job in spite of the portion of the end that has broken off, but if I were you I’d invest in a replacement for the peace of mind. They shouldn’t be too hard to come by, and you could always put up a wanted ad on our forum.

Can’t help you on the tank, unfortunately. Other than keeping a functioning OMC pressure tank, I just use a plastic tank for my single line motors. Those tank repairs are a royal pain if you ask me, but there are some guys here in the club that do some fantastic restorations. I hear the RedKote product is pretty good at sealing the insides of a tank with minor leak issues, but you gotta get the inside good and clean for it to adhere. Hopefully a few of the guys who are good at fixing tanks up will chime in.

[bwiggins1985]

I found a set of the new connectors on line I am going to grab! The cowl part and the fuel line connector.

[jpatti75]

Cool. Keep us posted on your progress. The Mark 20 is a fun motor, and all your effort will feel worth it when you eventually get it running.

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