Agrisem Big Boss, User Manual

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6.5 Skimmer setting
The positioning of the seed skimmer is essential for quality seeding. The skimmer is mounted on flexible rubber washers for
precise adjustment. Before adjusting the skimmers, make sure that the seeding disc is not in contact with the soil. If any discs
become blocked, the skimmers should be adjusted.
The skimmer must be : - parallel to the disc
- as close as possible to the disc without slowing down its rotation so that debris doesn’t get lodged between the disc and the
skimmer.
To do this, use a 19" spanner to tighten or loosen the 3 bolts to the optimum position:
- The upper front tip of the skimmer should touch the disc lightly and follow the shape of the hub as closely as possible.
- The lower front corner of the skimmer must be offset from the disc surface by 1 mm (maximum) to allow for disc flexing.
- The rear of the seed skimmer should be offset by +/- 2/3mm.
- It should be possible to turn the disc by hand once the skimmer position has been set.
IMPORTANT:
These settings are essential to prevent debris and straw from jamming between the disc and the skimmer.
6.6 Side wheel setting
The depth control wheels should be against the ploughshare discs and be easily turned by hand.
On the Boss unit, the side wheel has two purposes:
- Limit and maintain the volume of soil lifted by the disc. The wheel must therefore press against the ground (check that
the return spring is correctly attached).
- Clean any dirt or debris from the disc. It is therefore important to ensure that the wheel presses perfectly against the
discs without blocking their movement.
The side wheel can be adjusted inwards or outwards by means of wedge washers that can be moved on the wheel axle:
Use a 24 mm spanner to loosen the lock nut holding the press wheel.
Move the wedge washers to the inside or outside of the press wheel to achieve the desired setting.
Once the adjustment has been made, firmly retighten the lock nut holding the press wheel.