Russ, Davids correct, 36mm.
Russ, Davids correct, 36mm.
Honestly the best way imo to find TDC is with the inspection cover off, a very strong flashlight and a screwdriver of choice to turn the flywheel.
Trying to turn the engine on one end while checking on the other end is a PITA, and you will have to turn slowly once in range with a screwdriver anyway.
When I do use a socket/ratchet to speed things up I open the oil cap and turn the crank pulley until the intake cam mark is aligned with the saddle mark, then fine tune thru the inspection hole.
HTH's
Regards, JRV