cub gt2550 discharge

[wesk]

Replaced pto clutch and relay. Tractor discharges when pto is engaged. Volts will jump back up when pto is not engaged. What can I test and how? Could battery be bad? Have a battery tender mounted in tractor that is plugged after every mowing. Greatly appreciate any help. Thanks!

 

[KennyV]

Are you saying that the charging system is not keeping up with the electrical load?
That is a 22 hp Kohler right?
Check that it still has a working charging system. KennyV