3/7/19
150-131M
1205NT
22
Adjustments
Coulter Adjustments
A no-till coulter , Figure 13, is mounted directly ahead
of each opener on the drill. The coulters cut through
heavy trash and make a groove in the soil for the
openers. The coulters are mounted on the drill frame so
coulter cutting depth changes as the drill is raised and
lowered.
To set drill seeding depth, you must:
1. Set coulter depth with hydraulic stop.
2. Set opener depth with T-handles on press wheels.
3. If soil conditions make it necessary, increase
coulter down pressure by adding weights.
If necessary, adjust individual coulters or openers to
seed in tire tracks.
Coulter cutting depth is controlled by a depth control
valve.
The amount of coulter down force needed to cut a soil
groove varies with soil conditions. Adding weight or
shortening the coulter spring increases coulter down
pressure and cutting force.
Coulter Depth Control
Refer to Figure 14
The master-slave lift cylinders on your drill control the
depth of the coulters. A depth valve regulates the
retracted length of these cylinders.
1. Slightly raise drill with depth stop engagement arm
on the rock shaft not touching the valve.
2. Turn the depth control knob clockwise. Each
rotation lowers the coulters approximately 1/4 inch.
3. Raise and lower drill a few times to recheck depth.
Note: Changing depth of coulters will effect planting
depth of openers. Press wheels will need to be
adjusted accordingly.
Figure 13
Coulter
1
Figure 14
Coulter Depth Stops