KohlerKT730-3012 Battery won't stay charged

[zorares]

I've replaced two batteries on my Cub Cadet/Kohler KT730-3012. I assume that there is some form of alternator that keeps the battery charged. Any suggestions on what it is (Rectifier/regulator)? Is that what I need to replace?

 

[Rivets]

Go through the charging system checks in this manual and post back with your findings. https://www.kohler-engine-parts.ope...725_KT730_KT735_KT740_KT745_REVISED_7_15E.pdf