Thanks for the manual link.
I did read a statement in the manual that should be corrected or at least elaborated on. This may help someone else.
QUOTE: The dual circuit alternator provides DC current for battery
charging
and an independent AC circuit for headlights. The
battery is
not used for lights, so lights are available even if
battery is disconnected or removed.
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My tractor won't run without modification because the fuel solenoid in the carburetor needs 12 V to operate.