View Full Version : 1993 40 force outboard replaced rectifier

Pat Celli
03-10-2004, 09:00 AM
" I have a 1993 40 horse force outboard, my problem was the tachometer quit working and the volt meter was spiking over the high limit. I changed the rectifier, however the old one had 5 wires and the new one had six (one extra red wire which I attached to the starter solenoid)and that fixed the tachometer and voltage spiking but when I start the motor the voltage meter reads 12 volts and as soon as I give it a little gas the voltage meter goes up to 15 volts and will stay there even when I change the speed until I turn the motor off. Is this a problem ? "

Al baker
03-14-2004, 02:25 PM
" You could over charge the battery, the rectifier should stop charging at 14 1/2 volt, try running motor for a while, then check battery temperture and water level in cells. If hot, have rectifier checked out, you could have the wrong one. "

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