Great Plains YP4025F-1670 Operator Manual - Manual (Page 38)

34 YP4010HD/YP4025/F Table of Contents Index Great Plains Manufacturing, Inc.
401-571M Table of Contents Index 2014-09-08
Re-phasing Fold System
In typical use during a single planting operation, it is
normal for the fold cylinders to get slightly out of phase,
resulting in uneven folding and unfolding of the YP40.
Every few planting days, re-phase the cylinders with this
procedure:
1. Raise, unfold and fold the planter completely, and
hold the fold hydraulic lever or switch in Extend for
several seconds after the planter reaches full folding,
or until all cylinders are fully extended.
2. When all cylinders are fully extended, reverse
(Retract) the control to unfold and return to planting.