Charging problem

THE BEEF

Chief Petty Officer
Joined
Jun 11, 2005
Messages
432
Hello, I haven't been here in a while, but I really need help on this one.
Last year my friends Evinrude 1989 48 hp spl would not charge. Then it started charging 14v.
Pull it out this year same thing
I changed the rectifier and checked voltages coming to it . 2 yellow wires were reading 4v each the 3rd 5v all AC voltage so I know the charging stator is good. I checked the Red wire 10v Dc this is at idle.
I'm running it on muffin and don't want to chance a runaway motor.
I'm wondering if it will go up in charge at a higher rpm. Any help appreciated.
Thanks.
Beef
OK
 

rolmops

Vice Admiral
Joined
Feb 24, 2002
Messages
5,419
you do not mention the RPM you are running it on now, but a rectifier on a 2 cylinder 48 horse will give a good charge from 1800 rpm on. 14 volt is really good for a rectifier.
 

THE BEEF

Chief Petty Officer
Joined
Jun 11, 2005
Messages
432
It's at idle. You think it will pick up at higher Rpms ?
Just running in muffs
Don’t want a runaway situation
It did show 10v DC at idle right off the red rectifier wire. It's doing something.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,808
Test the stator wires.----Yellow to yellow is what ohms ?----One yellow to ground shows what ?-----Post just those 2 values.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,808
Yellow to ground should be lots of ohms ( infinity )---Zero ohms indicates stator is KAPUT.
 
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