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English
Method B - insufficient free turning space
In this case the operator does not have sufficient free space to turn. At the end of the strip, the
operator puts the gear shift in reverse. The rear roller automatically comes up from the surface.
He now moves the handlebar to the right (in this particular example) - the machine makes a
right turn almost around its axis. One the 180° turn is complete, the handlebar is placed back
into its centre position and the gear shift put into forward gear. The rear of the machine will
automatically lower back to the surface.
Caution:
The vibrating harrows and sowing mechanism must be shut off before turning.
9.6.1.4
Avoiding slippage
Each roller has propulsion and contains apertures. This has the advantage that soil cannot stick
to it and that irregularities are evened out. It also provides for a better grip on the surface.
If the rollers slip or soil too quickly nonetheless, the terrain is probably too wet, in which case the
work will have to be postponed.
How can this be avoided?
A. Starting
Both types of machines have a high dead weight (GZC750 = 385 kg / GZC1000 = 415 kg). These
figures exclude the front weights, the weight of a filled or unfilled seed reservoir and the weight
of the operator. The grip force of the rollers on the surface must overcome this resistance to put
the machine into motion from a still position.
Well-dosed activation of the traction on both rollers is of key importance in this process (keeping
Sowing field
Free space
Free space
Sowing field
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