Tach - where is 900 rpm. 83 SC

[ramonesfreak]

I believe each line below 1000 rpm is 250 rpm which would place 900 rpm just slightly below the 1000 rpm line, correct? Just confirming my idle is set properly

[Funracer]

If you look only underneath the 1000 rpm it does look that way because there are only four marks. But in between all the other numbers are 5 marks, so I think each mark below the 1000 also represents 200 rather 250. So 900 rpm would be in between the 800 mark and the 1000.

That’s the way I see it.

[jbell959]

The tach is not very accurate under 1000 RPM. I would not rely on it. You really need a meter or timing light that shows RPMs.

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[ramonesfreak]

OK thanks. Timing light should be here tomorrow