The coulter harrow does not adequately cover the seed with fine soil

The angle of the coulter harrow is incorrectly set.

  • See Adjusting the TwinTeC coulter > Adjusting the harrow angle

The height of the coulter harrow is incorrectly set.

  • See Adjusting the TwinTeC coulter > Adjusting the harrow height

The harrow tines of the coulter harrow are worn.

  1. Dismount nut 2.
  2. Remove the bolt 4.
  3. Dismount the harrow holder 1.
  4. Replace harrow tines 3.
  5. Bring the harrow holder into the desired position.
  6. Mount bolt.
  7. Mount and tighten the nut.

  8. To check the adjustment:

    Sow 98,43 ft (30m) at working speed and check the work pattern.