Su adjusting screws xk 140 ots

hello
pls can anyone tell me if there is something missing on my adjustment
screw set up here -
is the small brass slotted screw in the end the adjustment screw - or does it just have to be screwed in.
when i look on other diagrams it looks to me that my carbs are missing some parts in this end?
best regards
kim
Denmark

Welcome Kim. The cheese head screw is the mixture adjustment. Down for richer, up for leaner. You are missing the cover cap that keeps it from leaking.

Hi Rob
Tks a lot - just what i needed
kim