I have a 1993 evinrude 88hp outboard. I was looking over the charging system, as I am about to go on vacation with the boat, and giving it a once over. I hooked my multimeter up on the battery terminals and had 12.2v. I fired the engine up, and still 12.2v. I revved the engine to 2800rpms, and let it sit there for about 15 seconds, and 12.2volts. So, concerned, I tested the diodes. They appeared to be working ok, and showed polarity in only one direction on both the positive and negative terminals. The resistance readings were also consistent between the 2 yellow wires on the respective terminals, with the positive being higher than the ground side. By the way, I have the rectifier with the 2 yellow, and one red wire. I then thought that maybe the stator was weak, or the voltage regulator was set lower than normal for some reason. so I fired the engine up, and tested both yellow wires to ground on AC current. The reading was around 16v on each. From what I read, that sounded about right. Then I tested the voltage coming out of the rectifier, before the regulator, and still 12.2v. Is this normal for this charging system. I know that it is only like 8amps of charge, but I would think I would see a higher voltage output to the battery. Is this right, and it is just that slow to show a change in voltage, or am I missing something here?
