Vaderstad Rapid RDA 400S Original Instructions Manual page 29

The longitudinal inclination of the drill can be adjusted using the push rod (A) with the machine
resting on solid, level ground. When correctly adjusted, the front and rear row of drill discs should
reach the ground at the same time when the machine is lowered.
Loosen the lock nut (B), adjust to the desired position, and then tighten the lock nut. Use the in-
cluded spanner with a 60 mm holding width.
The measure (C) must never exceed 165 mm!
Be sure to sufficiently tighten the lock nut!
NOTE!
Ground parallelism can be verified in the field by ensuring that the front seed boxes drill to the
same depth as those at the rear.
This can be easily verified using the Väderstad drill depth meter. First pack the soil a bit, then
scrape off thin layers of soil until the grains become visible. Grains in all rows should be visible
at the same time. If this is not the case, the drill is not operating in a parallel state.
This incurs the risk of the seed coulters blocking!
NOTE!
Figure 3.23
27.06.2011
ver.2
RDA 400S
29