Great Plains CDA600 Operator Manual - Manual (Page 40)

Centurion CDA600
270-600M-ENG
38 2013-06-14
4.7 Boutmarkers
4.7.1 Marker Extension
Adjustment
At delivery, marker extension is typically
set for shipment (arm fully retracted),
and needs to be reset for field. Marker
extension needs to be checked periodically
thereafter, and needs to be checked and
adjusted when:
• machine depth is changed,
• marker disc angle is changed, or;
• marker disc throw direction is changed.
Measure marker extension in representative
field conditions, with openers in ground,
after adjusting cultivation section height
(page 37) and wing weight transfer (if
applicable). If openers are not at planting
depth when setting extension, the bout gap
will be too large during planting.
Marker extension is measured on the
ground, from the centre-line of the outside
row unit to the disc mark.
The marker extension is simply one half the
span (distance between end rows) plus a
bout gap of one row space.
Figure 14. Boutmarker
4. Adjustment / Operation
To change marker extension, on a lowered
drill:
1. Pull forward approximately 10m to leave
a mark and a furrow.
2. Loosen the U bolt (A) securing the outer
marker arm.
3. Slide the outer arm in or out until the disc
is at the desired extension distance.
4. Re-secure the U bolt.
5. Fold the marker.
6. Boutmarker discs may be sharp. Use
caution when making adjustments in
this area.
A
Figure 15. Boutmarker adjustment