What tachometer will work for my motor?

[CaneCutter79]

1979 Evinrude 85hp V4 Model# 85995R

I am looking for an OMC or universal tachometer for my motor. I am seeing something about "5/6/10/12/ and 20 pole". What's that?

What do I need to know about my motor before buying a tachometer?

 

[Joe Reeves]

Re: What tachometer will work for my motor?

PM Sent.