1973 7.5-HP long shaft Mercury 3728770 reverse lock????

haroldpowell

Cadet
Joined
Aug 6, 2008
Messages
12
I need a parts diagram for the exhaust housing to see what I am up against. I have no idea what this reverse lock cam looks like. Do I have to remove the lower unit and then the exhaust housing to get to the cam? I have replaced the water pump empeller before and there is no cam on the end of the shift rod spline. Need exploded view. My repair manual does not show these parts.
Thanks
 
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