Clockwise is neutral. Moving the magneto lever from slow, it will stop at 12 o’clock when its in neutral. The button on the end of the tiller controls the carburetor butterfly. You can control the speed of the motor without having to turn around. I find it most helpful when crossing a large wake. Video link – https://youtu.be/7_2ipgNUf-k You should also investigate the transom clamp option. Begin with the main jet out about 3/4 turn out. Same with the low speed. Low speed is air, not fuel. I find that the low speed adjustment changes from cold starting to when it’s warmed up, so I have modified this one so it’s easily adjustable. Here is a link to an issue with mine last summer you might find interesting. https://www.aomci.org/forums/topic/1952-martin-75-twist-shift-rod-knocking/ The only negative thing I can say about this motor is some exhaust comes up the clutch cable tube. This brings up a bit of water and oil if the boot is missing. The oil makes a mess as much as this one gets run. Russ has an update kit I installed this winter. I made a small modification to it and it seems to be the answer.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.