Answering my own question in case someone else has the same issue. Was not clear but half way down the ignition assembly where choke is is a slight line. A very narrow flat edge screwdriver and few mallet strokes and it separates. Bring out whole assembly, and sheath comes off back and cable can...

Advice sort please: Just replaced the carb in my series 3 from a Chinese aftermarket to Weber and the choke cable attachment is on opposite side of carb, leading to the existing choke cable being too short. The kit came With a new choke cable but I am struggling to see how to remove the existing...