You are lucky, the earlier 782's were series I, and if not properly maintained they suffered an early demise.
But much is written about that as it is history, and it happened to all manufactures that used that engine for power.
It nearly broke Kohler due to warranty issues on the series I.
Deer swore not to ever use a Kohler engine again at the time.
The series II and magnums that followed, were good engines.
But being flathead engines, they were a bit more thirsty and could not meet later emission standards so the design was retired in favor of overhead valve design.
