Bill has it right, you’re pointing at the stud for the ignition ground button on the end of the tiller handle. You need a wire to go from there up to the magneto plate and get attached to where it can ground out the ignition when you push the button in.

TO drop the lower unit – yes, two screws – there’s the one screw that tightens a clamping collar, the other one screws in from the front and is basically a locking screw to keep the lower unit alignment straight, the undo the water lines (use two wrenches, one on the compression nut, the other on the fitting… if you don’t use two wrenches, you will be sorry!)

Spark plug leads are actually easy to change on these, they have Bakelite tower thingys on the mag plate. You take the high tension lead out of the tower, and you’ll see a small screw down at the bottom inside the Bakelite piece. Take that screw out, and the spark plug leads easily pull out from the underside of the Bakelite part. Strip the insulation from the end of a new spark plug lead, insert it into the bottom port on the Bakelite part, and re-install the screw. easy peasy, no soldering for the spark plug leads.

The high tension leads coming from the coil and inserting into the Bakelite tower thing – well, those are another story…..

Hope this helps.

Best,
PM T2

Oh, a second comment……Put a rubber boot over that terminal for the kill wire found on the steering handle,—it’ll light your fire if you touch it while the engine is running, as in the process of closing the exhaust cutout..

George