Re: 1964 Evinrude 75hp, reverse lock lever
The '64 75hp is nothing at all like the 40 and 50. It is a hinged flapper that flips from right to left, sort of like a door. Imagine tying a string to the doorknob, and opening and closing it. It pulls on the string as you swing the door one way. That is exactly how the tilt lock lever works. There is a ball on the end of a cable. The cable is threaded through the lever and attached to the locking levers. Flip the lever one way, it pulls the cable and lifts the locking levers. Flip the lever the other way and it lowers the cable and levers to lock position.
Hit an underwater object while running at high speed with it locked down and the tilt lock automatically releases so the motor can tilt up. Trouble is it happens almost instantly and the lever we are talking about doesn't have time to "normalize" itself fully one way or the other....and hits the transom. That's how they get broken.