1930s Evinrude Boat motor gas primer plunger type primer how to repair

This topic has 2 replies, 3 voices, and was last updated 1 day, 7 hours ago by JOSEPH BRINCAT.

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October 3, 2026 at 9:45 am #329404
MICHAEL McHUGH
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1930s evinrude motor have push type gas prime plunger how do you repair the seal
October 5, 2026 at 9:50 pm #329480
ROBERT LAFAYETTE
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Measure seal specs and try to find a modern replacement by searching Chicago Rawhide or SKF catalog. If no luck sourcing a new seal you can try making one from leather using a set of punches. You may also machine one from a suitable material like nylon or delron?
October 5, 2026 at 10:37 pm #329490
JOSEPH BRINCAT
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Not familiar with that particular plunger. Where is the seal in question? what material? rubber or leather? From the pix , it appears that the plunger piston has a brass head. is that brass the actual piston? Can you disassemble that unit and post pix of the seal that you need?

Joe B
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