Do not exceed 60 volts on that!
There is no " Phase paper " insulation between the windings of the coils.
If a coil from one phase is touching the coil of another and the potential between the two exceeds about 120 volts there is a risk the insulation will fail.
Now in my world I know we the good enamel wire is safe to 120 volts, but I have no idea what you are dealing with and I can guess it was never designed to run at high voltages.
So 60 is probably safe but 120 is absolutely out of the question
Previous experience with a 13 cubic inch Briggs and straton direct driving a 100 amp Leece-Neville taught me you can't start under load with weak batteries.
The engines in this size can carry the load once you get above 2500 rpm.
Your wife has a charming smile, and seems a natural for demonstration videos !
Clearly she has an interest in you projects.
My wife says I drive too fast and yells at me ha ha.
She says I should do more work around the house and less playing around.