Leaking petcock

This topic has 2 replies, 2 voices, and was last updated 1 month, 2 weeks ago by Marcus.

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May 15, 2026 at 4:13 pm #318897
Marcus
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Got a 1928 Jhonson A-35 that hasn’t run for 50 years, now purrs like a kitten. the brass petcock leaks, took it apart and looks like it has had sand in it. can I polish inside mating surfaces with lapping compound or something like it? Member of Puget Sounders chapter at 73 years old I am still new to outboard repair. any help would be greatly appreciated. thanks again

Westbrook
May 15, 2026 at 4:53 pm #318901
David Bartlett
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Marcus,

Yes you can. I have done this on my tapered petcocks. I have had to put a stiffer spring on one of them afterwards, which I got at the hardware store.

David Bartlett
Pine Tree Boating Club Chapter

"I don't fully understand everything I know!"

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PM T2, T....in Wisconsin
May 16, 2026 at 12:01 am #318928
Marcus
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OK thanks for the encouraging response and I will give it a try.

Westbrook
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