Can you provide the make, model, and switch setting you have on your tach. I suspect you have the wrong setting. There are 5 settings on mine, a Faari Beede tach. References:
https://fariabeede.com/site_manuals/IS0012aa.pdf
https://www.fariabeede.com/site_manu...achometers.pdf
https://fariabeede.com/site_manuals/IS0100p.pdf
Its a sea star tach its set to 6 pulses check the pic
Attachments
Last edited: