How do you get the Grasshog trimmer auto feed to work?

To get the Grasshog trimmer's auto feed to work, ensure that the trimmer is properly assembled and that the spool is loaded with the correct line. Turn on the trimmer and allow it to run at full speed, as the auto feed typically engages when the head is spinning fast enough. If the line doesn't feed automatically, gently tap the trimmer's head on the ground while it's running to release more line. Always refer to the user manual for specific instructions related to your model.