Re: Yanmar tach reads low rpm
I think that schematic is for a Teleflex tachometer, not necessarily the stock Yanmar one. Look at who produced it.
My Yanmar tach has a fixed setting for number of teeth. It is written on the face of the tach (something like P=127).
Thanks for copying the image over!
boats that I sail on regularly: Pearson 28-2, Rondar 505, Yankee 30, Blanchard Junior