1964 Buick
NOTE:
If choke is disassembled, scribe mark on inner cover should be aligned with index point on outer cover at reassembly, before center screw is tightened. Do not loosen center screw in cover when making choke adjustment or engine coolant will be spilled.
To adjust, align proper index point on choke housing with scribe mark on choke cover. Tighten cover retaining screws.