Home › Forum › Ask A Member › Need the diagrams for a 4378 Zephyr › Re: Need the diagrams for a 4378 Zephyr
November 27, 2015 at 3:04 am
#27711
I think you need that tube to supply idle air when the carburetor is set to slow.
You can probably get a new piece of tubing at a hobby shop. Take the old piece with you to the store.
Ray