Sprocket indexing (stagger) – Great Plains YP825A3P Operator Manual User Manual
Great Plains Manufacturing, Inc.
Raise the planter. Although this adjustment can be
made with the planter lowered, the springs will be in
tension, and will require more effort. The extra force
may also damage tools.
Install lift assist cylinder locks. Lower parking stands.
Set the down pressure spring cam to zero, per the
instructions on page 48.
Raise the row unit high enough that the hole for the
pin is above the lower parallel arm. This can be done
in several ways, including:
a. use a hoist at the rear of the shank
b. use a jack under the shank extension
Use a jack or hoist. Raising a row unit on a block by lowering
the planter is risky. The potential for hydraulic failure creates
a safety hazard. Full lowering can damage components.
Refer to Figure 71
Remove the pin from the storage hole
and secure it in the lock-up hole
Lower row unit until lock-up pin rests on lower
Sprocket Indexing (Stagger)
If you are planting:
• twin-row crops,
• at seed interval spacings above 6
inches (16.5 cm),
you can synchronize each pair of adjacent meters in a
twin row so that you achieve the maximum seed-to-seed
spacing between the units of the pair.
Refer to the Seed and Fertilizer Rate manual (401-651B)
for instructions and charts.
Certain Machine Damage:
Do not pin the row unit while it is in the lowered position.
If the pin is inserted below the parallel arm, unit damage
occurs as soon as planting begins.
25AP Row Unit Locked Up