Update:
I've replaced the rectifier and I still can't get it to fire off! A friend recommended that I checked the ohms going to the stator from the yellow wires before disconnecting the old rectifier (reading was 0.I) on both wires. I've charged my batteries due the them being older, and even...
I just installed a new solenoid and I rebuilt the starter and tested each before installing and they both worked, but after install "crap!" Some guidance would be greatly appreciated! I'm attaching photo for reference if someone sees something I missed.
First, just out of left field, have you checked the washers to the lower unit drain and vent? Second, if you've replaced the seals in the lower unit, did any of the roll or get crimped while being inserted?
It's a date range of 1977 Mercury 175hp Black Max. Below is the only other identifying numbers I've found on the lower unit.
Now every other prop shaft I've seen in videos has a completely different forward/reverse shifting mechanism via a vertical bar that swings back and forth, not in and...