I have been contacted by a moderator, who told me that no one has been able to help you.
As I stated, this is not a unit I am familiar with. I am not certified on H-panel units, and have only worked on a few. I have not ever worked on one like yours.
However, due to the fact that no one else seems interested in helping you, possibly due to the low offer you made, or maybe no one here knows that unit, and the fact that moderator has gone over the top to be nice to me over the years, I am going to do her and you a favor and try to help you.
Please do not be too upset if we can't get to the bottom of this. I will try, but I can't guarantee anything.
Before I can help, though, I need some additional information.
1. What is the serial number of the genset?
2. What voltage and phase is it set up for?
3. Do you know if this unit has a 4 lead stator, or a 12 lead stator?