1985 70 etlk tachometer issue

[Tugboat1970]

Tachometer reading only half actual rpm. Tachometer has been replaced at some point, Teleflex gauge unsure of model.Only had boat a few weeks.

[boscoe99]

Does it have a setting in the back for the number of poles (not Polish people) used?

If so, at what position is it set?

[Tugboat1970]

It has 4 6 8 I think it may be a 4 stroke tach . It is in the 6 cylinder position.

[boscoe99]

It needs to be set for a two stroke motor with a 6 pole stator.

[Tugboat1970]

After looking at Teleflex troubleshooting guide I believe I have a tachometer for an inboard be engine. I will be ordering correct tachometer .