Adding a tach to a BF15 manual start

I've been reading the thre

I've been reading the threads regarding prop sizes and I would be interested to know if my prop is the correct one. What is involved in attaching a tach to my motor. Do you have to use a car tach? Do you have to buy a special wiring harness?

"What vintage is your engine?

"What vintage is your engine? Is it a BF15D? A recent vintage...

If it is manual start, as you say, it does not have a specific lead for a tachometer to connect.

The models that are electric start do have leads for a tach. They use the coil which energizes the start enrichener on the carburator.

There is no specific harness. Just run the wires.

If you have the 15D manual start, you would have to use some sort of shop tach that has a pickup that attaches to one of the spark plug wires. Various timing lights also have tachometers built into them. If you have one of those (or if you have a friend who does), I would give that a try.

If you have the BF15A (the older vintage), you can probably pickup off of the charge coil.

If someone has come up with a workaround on a direct connection for the new vintage manual start, I would be interested..."