Re: help on reverse lock cam
Place shifter into forward. This should raise the locking mechanism that grabs the pin. Tilt the motor up and then lower it again. Then, when you shift back to neutral or reverse, the "Teeth" should grab the pin(What you are calling the "Bar"). This prevents the lower unit from kicking up in reverse. What I'm saying is, you cannot have the motor tilted and the shift lever in neutral and just lower the motor and go. It must be in forward when you lower the motor. The reason you are hearing a rattling, is that the lower unit is not sitting against the bar like it should, but is sitting against the reverse locking mechanism(Teeth). This is allowing the pin to vibrate in it's holes and make the noise you are hearing. But nevertheless, you must initially get the lower unit to sit on the bar. If it's not doing this, then the rod that activates the mechanism is installed incorrectly inside the lower unit. One easy way to see if it's working at all, is to raise the motor up and lock it there. Have someone move the control lever from forward to reverse and watch and see if the teeth move. As for the motor reving up when running, it could be that the motor was tilted out too far do to the fact that it was hitting up against the mechanism and not really sitting down on the pin as it should be. Or it could be that you need to change the position of the pin to another hole the will tilt the motor toward the transom further. Check it out and let us know what it looks like.... It's been a long time since I worked on that old motor, so I'm going from memory when I say that you must install the cam inside the lower unit correctly in order for the locking mechanism to function properly. I do not recall the position it needs to be in, but if you take a look at it, you will realize how it must be installed to work. I had the same problem when I bought my motor and finally got it right after a few tries, with no manual...