charging system problem

[mackg4]

i have a bob-cat zt 100 series mower with a kohler ch 730 motor, i have charging issues,i replaced the regulator/rectifier and it still eats battery,it charges when running but whe i put a load on it (turn blades on )the charge goes down,it will run with blades on for about 2 hrs then the blades kick off (mower still runs ) but i cant turn blades back on not enough juice,

 

[Fish]

get a volt meter, and unplug the connection at the regulator. Take an ac reading across the white wires, should be over 28

 

[Rivets]

Your electric PTO clutch may also be going. High resistance in the clutch may be causing a higher than normal draw on the battery.