The coulter harrow does not cover the seed sufficiently 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. Remove the nut 2.
  2. Remove the bolt 4.
  3. Remove the harrow bracket 1.
  4. Replace the harrow tines 3.
  5. Move the harrow bracket to the desired position.
  6. Install the bolt.
  7. Install the nut and tighten it.

  8. To check the setting:

    Seed for 30m at working speed and then check the work pattern.