Great Plains HD Series Operator Manual - Manual (Page 4)

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3.Make certain area around harrow and behind harrow is clear of people and obstacles. With
engine speed at low RPM, slowly operate hydraulic lever to swing wings back until the wings
are unfolded. Do not move the harrow until the wings are fully unfolded. WARNING: Do
not walk or allow others to walk behind harrow when it is in the unfolded vertical position.
Hydraulic malfunctions or the hitch pin coming loose could allow the harrow to tip over
causing serious injury.
4.When the wings are unfolded, the sections will start to be lowered to the ground. When the
rear bars of the sections start to touch the ground, start driving forward slowly.