1977 Evinrude stator pulses per revolution output to tachometer

[Bubbasboat]

My motor is a 1977 70 hp Evinrude outboard model #70773.

A photo of tachometer back and front is included.

Can someone tell me what the pulse per revolution output of the stator is on this motor?

Will this tachometer work with this motor?

Thanks

 

[Barnacle_Bill]

6 pulses

 

[Bubbasboat]

Thank you!

As you can see in the photo, it is set for 6. The tachometer is not registering. Would this likely be the tachometer, original on boat, a 1974, or motor?

 

[emdsapmgr]

Those Aqua Meters are a sweet tach. Old, but they have a jeweled movement inside, I believe. Yours is the later model with the switch on the back. It should work fine in your application. Possible your rectifier is shot and not sending the correct signal to the tach. You could try another tach as a test. Do you know if the engine charges the battery correctly when running? Do you have a voltmeter on the dash? If not, check the voltage across the battery when running with a normal voltmeter.