Great Plains YP1625 Operator Manual - Manual (Page 41)

7/12/2005 401-182M
39 Adjustments
Contact Wheel Drive
Refer to Figure 38
You can adjust the down pressure the contact
wheel exerts by adjusting the pressure on the
spring.
NOTE: Do not adjust spring so tight that it will bot-
tom out when raised.
Refer to Figure 39
Before adjusting spring, raise planter and adjust
wheel travel to obtain 1 1/2” clearance above the
main tire.
Refer to Figure 40
You can adjust the amount of travel for the contact
wheel by loosing the jam nuts and lengthening or
shortening the threaded rod.
NOTE: This adjustment controls the timing of the
seed meter drive when raising and lowering the
planter. Increasing the gap between the tires
causes seed flow to start and stop with the planter
at a lower height. Decreasing the gap will cause
seed flow to start and stop at a higher position.
NOTE: Be sure to check for spring bottoming after
making this adjustment.
Figure 38
Down Pressure Spring
Figure 40
Travel Adjustment
21973
21972
Figure 39
Contact Drive Wheel
22500
1 1/2”