Topic: CB350 carb question... rubber plugs on slow jet?

[Celco]

Working on a bike for a friend.  Have played with many 550's and 750's, but this is my first time for a 350.  Curious about these little black plugs that go on the slow jet.  This rubber on this bike is more like plastic and don't know if these plugs should be bopping around the hole loose, or fit snug like a real plug.



Found replacements, but unsure if I need them or if I can reuse the hard ones that dont seem to "completely" seal off the passage.  Guess SCI is calling them rubber passage plugs.

What is the deal on these bad boys?

EDIT* Should say these are the CV carbs from a 72 CB350

[CBGBs]

Those things seem to serve a non critical purpose. If they are falling out for sure, I would replace them. I don't think I've run without them but I'm sure I have used hardened plugs.

[fmctm1sw]

Over on the CX500/Silverwing forum there is a picture of an exploded carb that will show you exactly how that works.  I'm short on time or I'd find the link...

http://cx500forum.com/index.php?/topic/17090-what-happens-if-you-take-the-plug-out-of-the-slow-jet/page__p__198227__hl__%2Bidle+%2Bjet+%2Bplug__fromsearch__1#entry198227