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Old 01 May 2015, 13:09   #11
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Country: USA
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Boat name: D560
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The cap gasket, one-way diaphragm, and valve base gasket should be replaced. The brass components should be cleaned. Light corrosion can be removed with vinegar.

To remove the IC cup assembly, utilize a 10mm deep well socket to remove the nylock nut inside the valve, then simply wiggle the flywheel while pulling outward. DO NOT PRY. The valves are brass, easily damaged, and are very expensive.

The valves should be cleaned with solvent and regreased with Evinrude triple guard grease.
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Old 01 May 2015, 21:19   #12
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That boat and plate certainly seem to be from a late 70's early 80's MKIIIGR. I can confirm model #3463 was that model as it corresponds to our old 1981 MKIIIGR. Those boats were gray with black floors. This one looks like the tubes were painted black. Also looks like someone tried to convert the transom for a long shaft engine. They all had short shaft transoms in those days.
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Old 02 May 2015, 03:50   #13
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Office888, I just replaced most of the gaskets tonight as I found a couple leaking and had extra new ones given to me with the boat.
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Old 02 May 2015, 03:57   #14
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Projectile, thanks for the reply. I knew most of the pictures I have found they were grey, just assumed they made one in black also. Didn't think about it having been painted. if that is the case I guess the Grey areas starting to show through aren't as big of a concern as I thought. I don't see any fabric showing anywhere but was still concerned that material may be deteriorating or getting thin.

The transom does in fact have an extension added to it.more so for keeping a jet unit as shallow as possible than for a long shaft.
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Old 02 May 2015, 13:58   #15
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Well after a couple of tube patches and replacing some valve gaskets I have a boat that successful holds air!! (at least over night)
Now to patch a couple of thin spots in the floor and maybe I can put this thing in the water tomorrow and test it out.
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Old 03 May 2015, 18:23   #16
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zodiac

If I owned the boat I would as you have already stated make it air tight then I would try and clean the tubes up with acetone (nail polish remover etc) then paint it with hyperlon paint. Keep us posted with the repaint etc even if it takes a while .....good luck.
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