Accelerator pump keeps corroding / seizing

[H€PHÆ$TU$]

I cleaned my accelerator pumps and replaced the diaphragms right before this season started. We've been boating less than 2 months and one of them has already corroded and frozen up again. I took it all apart. cleaned it out again, freed it up, and it's working again now. But are there any tricks to keeping the little shaft attached to the diaphragms clean and moving freely for longer than two months at a time?

 

[mikidymac]

If they are aftermarket ones the metal might be inferior and prone to corrosion. I have never seen them rust but I would also make sure you don't have water in your fuel.

 

[H€PHÆ$TU$]

OEM diaphragms are no longer available. Aftermarket is all there is now. But they're not rusting per se. They're just getting clogged with that typical white dust that forms all over everything in salt water environments. I've tested my fuel for other reasons, too. There's no water in it.

 

[mikidymac]

OEM are Available....Part Number Mikuni BN40i/22

 

[H€PHÆ$TU$]

Huh. I could not find them when I was initially looking and it was one of the suppliers who told me they were no longer in production.

Anyway, I don't think it's the metal that is the issue.