I haven’t messed with a Zephyr carb since the 70’s, but I have
some notes from the board.
Also, there’s a PDF file all about Zephyr carbs. Not
sure of the link if it’s still "out there", but I could
try to email it to you if you like.
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Andy wrote on Jan 13th, 2012 at 9:28pm:
Mumbles wrote on Jan 13th, 2012 at 3:33pm:
Where can i get carb primer cups for my 4423 evinrude? Carb was leaking badly from stem and further investigation showed forward cup failed and rear cup worn. The parts are 202119. considering making my own. any advice on how much over the .500 bore they should be? maybe .002 or .003 over? From the schematic I don’t see the need for cup shape. The bore is 3/8". I just made a drum shaped plunger that fits the bore good and stays on primer shaft. will try and test. I realize if not functional will be hard to start, but at least will not leak. submarines seemed alot easier to repair..haha.
Micropoise
I found a source for 1/2" cups yesterday and ordered a couple. As soon as I get them and try them out I’ll let you know. The same company here in town has a listing for 3/8" cups which should fit your 4423. Lets hope they work!
Andy
The 1/2" cups I ordered are for the Zephyr or Light Four carbs with the 1/2" primer bore. I’ll let you know as soon as I get them if they work or not. It’s a shot in the dark!
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I took some carbs apart today and this is what I found. The Light Four and Zephyr both take the same cup, 201764. These are running in a 1/2" bore. The big Vacturi carb has a 5/8" primer bore with what looks like original leather cups. I’m starting to think there the same as used in GM carbs and sure hope so as that would be an easy fix. Your 4423 uses a 3/8" cup 202119? I’m going to try and source the 1/2" cups locally and will inquire about 3/8" ones. Will let you know later.
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