Preparing for operation
57
Adjusting the paralle-
logram
Both seed rows of a double seed row unit should run one behind the
other at the same height. With some double seed rows, minor offsets
can cause the rear seed row to sow lower or higher than the front seed
row.
By making adjustments on the parallelogram, it is possible to ensure
that the seed rows are level again.
> Park the machine on a perfectly level surface, which should also
be as flat as possible
> Using the primary top link, adjust the frame parallel with the ground
> Check whether any offset is present between the front and rear
seed rows
If the front and rear seed rows are not operating on the same le-
vel:
> Loosen the securing device on the spindle
> Adjust the spindle as desired until both seed rows are operating on
one level
> Secure the spindle
The spindle adjustment shown is required only if a correction using the
tractor's top link does not prove satisfactory.
front seed
row
rear seed
row
Securing
device
Spindle