Slip controlling belt tension system

A lawn care device comprising:

• a cutting deck housing at least one blade;
• an engine configured to selectively provide for rotation of the at least one blade responsive to selective coupling of the engine to the at least one blade;
• and
• a PTO switch that is operable to engage or disengage a PTO clutch to provide the selective coupling between the engine and the at least one blade via a belt drive system,
• wherein the belt drive system comprises:
• at least one blade pulley operably coupled to the at least one blade;
• a drive shaft operably coupled to the engine;
• a drive belt configured, responsive to engagement of the PTO clutch, to couple the drive shaft to the at least one blade pulley;
• a tension adjustment assembly configured to operably couple to at least one component of the belt drive system to adjust a position thereof to modify tension of the drive belt;
• and
• a control unit configured to provide electronic control of the tension adjustment assembly.