Johnson Outboard Charging system test

[jchaulk]

I have a 1970 Johnson 60 HP and I was hoping someone could tell me if there is an easy test of the charging system to know if it is actaully charging my battery?

 

[Dhadley]

Re: Johnson Outboard Charging system test

Does your tach work?

 

[rickdb1boat]

Re: Johnson Outboard Charging system test

Take a voltage reading at the battery with the engine not running. Then with the engine running at fast idle, take another reading. You should see a change. But as Dhadley said, if your tach. works, it's charging..

 

[jchaulk]

Re: Johnson Outboard Charging system test

I do not have a tach. Should I install one? Unfortunately I have no gages at all.

Thanks for the info on the voltage test.

 

[Silvertip]

Re: Johnson Outboard Charging system test

If all you are going to use the tach for is to see if the charging system is working, you'd be better off installing a voltmeter. It's a heck of a lot cheaper. A tach is helpful in determining whether the engine is running at its maximum recommended wide open throttle RPM so its helpful in determining whether or not you have the best prop for the engine and boat combination.