I don't know what the inside of the pump looks like specifically if thre is any space around the plug area. Anyone have a manual that shows that?
That said my first thought would be to tap the hole with a slightly larger thread and use a suitable plug,bolt whatever.
JB weld may or may not be permanent depending on how clean the material is and how much vibration it sees.
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Jay Leonard
Ex boats: 1983 40 Albin trunk cabin, 1978 Mainship 34 Model 1
New Port Richey, Fl
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