83 550 carb questions

Literally picked up a 83 550 out of a barn a few months back. Wouldn't run for long, obvious issues once I got a good look. First pic, the small tube circled of the vacuum line to the fuel petcock? Second pic, the nipples are on a cross pipe between carbs. Should they be plugged or open?

Thanks for the help, trying to get an idle before I spend a lot of time on it.

Sometimes a closeup can be too close.

The 1st pic is probably the petcock vac line & the 2nd one is a vent. there should be two vents. open to atmosphere & directed downward to keep water out.

Here's a topic by loudhvx with links to his motorcycle stuff pages. one of them is for the 550 TK22 carburetors.

Perfect, thanks for the link. Here's an image I pulled from louds site. I had to crop the image since I couldn't upload a large file off my phone.


gpzweb.s3-website-us-east-1.amazonaws.co...Page/TK22hornEnd.jpg