So the TMD does have a shutoff, it is on the mag lever and grounds out when it contacts the stop on the throttle rail. (see photo below) It is on a screw that is isolated by phenolic washers. I tried to get a photo of it through the fan from the top but the camera wouldn’t focus down to it. (I don’t have time right now to disassemble it for a better shot.) Attached is the best photo I could get.
I can’t identify the parts in the manual, but then I don’t even see the mag lever in the manual! I’d guess the parts to be as follows from top to bottom: Nut, wire connector, spring, washer, phenolic washer (this slides on the throttle rail), another phenolic washer, phenolic isolater through the mag lever, phenolic washer on the bottom of the mag lever, #10 screw.
