Ok, here's what I think. The cable housing is clamped where the choke cable is clamped. The core goes down to a swivel link on the throttle lever and through it. On the end of the core wire is a clamp. When the foot throttle is opened the core wire slides through the swivel link and when the manual throttle is pulled out it will open the throttle also. When the manual throttle is pulled out some the sliding swivel allows the foot throttle to operate to raise the rpm's.
Is that right?