Clear float bowl plugs

PROSTOCKTOM said
From my experience with the plastic (clear acrylic) is that tend to dry out and break in half right at the threads.

Then you have the threads stuck in the bowl and nothing left to grab onto to get them out. You end up having to take the bowl off and drill a hole in the threaded to remove them.

So I learned to just use them when setting the float levels and then put the metal plugs back in.

Tom

Exactly. That kind, the plastic thread in version, was made to screw in to replace a metal plug and was only supposed to be used to set the float height. Then you removed them and put the brass plug back in. They weren’t ever supposed to be left in place.

The new ones that are permanently installed in some newer carbs are a type of glass, and they don’t get hazy or deteriorate.