I want to install a magnetic tachometer sender in the thread on the bell housing at the rear on the exhaust
side of my 3YM30
I don't want to use the tacho signal out of my Balmar
Alternator/regulator combo as the signal disappears when batts are full.
Anyhoo, does anyone have data on the thread size? I have pulled the bolt and the thread looks to be 11/16 inch with my cheapo micrometer but I would expect the Japanese would have made it metric so I'm seeking confirmation.