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1971 60hp evinrude stater problems

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bowrider

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I have a 1971 60hp evinrude. I

I have a 1971 60hp evinrude. It has been running very good thanks to the people on this site.
I was running it today and the stater started kicking out 45 volts on both yellow wires comming from the stater instead of 12 volts.
Could anyone tell me what the problem is or why this would occur?
Thanks for any help ya'll can give me.
 
I don't know what the spec

I don't know what the specific reading for your motor should be but a the AC output from a stator will be considerably higher because you loose a lot by time it gets thru the full wave bridge rectifier to provide charging current to your battery. The simplest way to check a charging circuit is to check the DC voltage at the battery with the motor off then check it again with the motor running. You should see an increase in voltage as RPMs increase.
 
The book says that you should

The book says that you should only have 12 volts at each of the yellow leads at the terminal board from the stater with the engine running. If that is the case would the stater be bad or could it be something else? What would cause the stater to have a higher voltage at an idle?
 
David...are you looking at sta

David...are you looking at stator output or rectifier output?the stator should be putting out ac volts...this reading will be somewhat higher than 12vac..on my 1994 90 evinrude it is around 26vac with a fully charged battery at 2600 rpm..the output on the rectifier once the charging has settled down from the starting current draw will read from 12.5 to 15vdc depending on the charge state of the battery.read this at battery terminals as ibnfishing suggests..a couple questions.1..have you replaced battery with an expensive sealed battery?these batteries will drive a rectifier only(non regulated) charging system wild at times..2.what book are you using?..please get back to us with the ac reading at stator output and the dc output from the regulator at 2500 or so rpm..if you are reading higher than normal ac from the stator and lower dc voltage from the recifier i would suspect the rectifier is open..that would have an effect on stator output as you have reduced or completely loss the load on it..Carl
 
another thought on meter readi

another thought on meter reading at battery..get your reading from the post on battery..after the connection..then move meter to rectifier output..compare the two..you need to eliminate a bad connection on battery.
 
The manual is a Seloc. It says

The manual is a Seloc. It says to start the engine and to take an ac volt meter and put 1 lead on ground and touch the other lead to the yellow from the stater and it should read 12 volts on either of the yellow wires. I tried another stater that I have for a spare and it still has 45 volts. So would it be safe to say it would be the rectifier?
 
When running the motor to chec

When running the motor to check everything I melted 2 blocking diodes at the shift switch and blew the fuse at the terminal block.
 
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