New Old stock Genuine McCulloch Chainsaw throttle controls kit as shown
 
This only fits early saws that did not have the operator presence devise that you hold down to release the throttle.
This only fits early saws that would have had the button type throttle latch for starting.
 
Fits:

McCulloch Mac 10-10
McCulloch Mac 7-10 (Early),  Super Pro 70 (Early with no operators presence devise)
McCulloch Mac 1-10, 2-10, 3-10, 6-10
McCulloch Super Pro 80
McCulloch Super Pro 81