Stator Type? 2 listed on diagram

[Slayer412]

I am going to replace my stator and everywhere I look, I see 2 different models available for my specific serial number. When I cross reference them with "newer" versions or aftermarket models, they don't seem to be interchangeable and one is a 9 amp while the other is a 16 amp.

I have a 1993 Mercury 115hp, 4 cylinder, 2-stroke. The serial number is 0D230886 which is what I used to find the 2 different stators. When I look at the specs for both on multiple websites, it says they are both suited for a 1993, 115hp, 4 cylinder, 2-stroke Mercury.

Before I pull the trigger, I'm looking for any insight on if both will work, what the differences are, or how I figure out if I need the 9 or 16 amp version. My current motor runs like garbage under load and at high RPMs and it has an aftermarket stator. I'm not entirely even sure it's the correct stator so I don't feel comfortable referencing it for a replacement.

A link to the diagram is below and they are #9 and #9.

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One other thing, the 9 amp model says it's compatible with a voltage regulator. The 16 amp model says it requires a voltage regulator. When I get home I will check to see if my motor has a voltage regulator. If it doesn't, I would assume I need the 9 amp. If it does, it appears either model might work?

Any insight would be appreciated!

[JOE54]

16 amp system will have regulator mounted on top of attenuator /carb flange, my book shows 8778 only fits 9 amp , 9710 fits 16amp

[Slayer412]

16 amp system will have regulator mounted on top of attenuator /carb flange, my book shows 8778 only fits 9 amp , 9710 fits 16amp

So I have the regulator shown in image #43, not the one in #40. I also have the 8778 stator on my motor which is the 9 amp.

Did the 9 amp versions come with regulators? I’m curious if the wrong stator was installed on my boat by the previous owner?

[Slayer412]

To add to the confusion… the regulator labeled as #43 looks totally different in the diagram compared to #40. When you scroll down, both of them physically look the same when they’re listed with their part numbers.

[JOE54]

agree they are different and both should have been used on 16 amp systems the large reg was very early model

[Slayer412]

One other question, is the only difference between the 9 and 16 amp stators their charging ability? Or will they have an impact on ignition?