According to the wiring diagram
the Black-AC power wire goes from the AC plug to the drawer safety switch and then the color changes to Yellow (after the momentary start switch) which goes to the centrifugal switch. There is no Black wires connected to the centrifugal switch.
According to the Installation instructions
(page 2) the jumper wire must be connected to terminals "1" & "2" when you connect motor leads to the new switch.
I would recommend to double check all connections in accordance with the wiring diagram
and the Installation instructions