Re: 1972 40hp mercury no reverse shifting out of sync after water pump install
Do you have a pic of the top half of the cam you speak of? When I pulled the lower unit, the black part shown in the pictures was the only piece there. I do plan to change the part as the part had shown wear at the top of "ramp". This '72 motor has a shift cable spline that slides over the shaft above the black reverse cam part (at least what I cam calling it). Then I can see a spring loaded pin in the upper unit that must be pushed up by the ramp of the cam. However, as you can see by the pics that someone else provided - the shaft has about 6 splines the shift cable can slide over, but unfortunately -- could not find the correct location. I looked at how the shift cable behaved, and it only rotates a very short distance. In the pictures that were part of this thread, it appears the ramp of the cam is metal -- whereas my part is one solid piece of hard plastic. The dealer can get me a new part. Perplexed why Mercury did not put 'dots' or alignment marks on these parts. Any ideas? Should I expect an "2nd part" of the cam when I order a new one? Thx yet again!
