8. - Instructions for work
HRB202-202S-252D-302D
71
KN136JGB_D
Power harrow
- Only work in straight lines. Lift the machine
to turn.
Use of the power harrow entails limits which
must be respected in all situations and that
are often related to:
• Weather conditions: Avoid working
during and immediately after rain, wait
until the ground to be worked is
completely drained.
• Soil types: Smooth clods indicate too
malleable or too humid soil to be worked
in; Wait until ground is completely
drained. Soil concistency is ideal when
clods crumble without sticking.
• Tractor power: Adapt working depth,
speed and rotor speed to power available
and work to be carried out. Never exceed
the maximum allowable DIN engine
power: 184 kW (250 hp).
• The nature of the work: the power harrow
is an excellent implement for secondary
tillage and seedbed preparation after
conventional ploughing, chisel
ploughing or soil loosening. It is far less
efficient for primary tillage work
especially on hard and dry ground.
The clod size depends on:
• The rotor speed.
• The forward speed.
• The working depth.
• the use of levelling bars (Optional
equipment).
• The Crumbler roller being fitted or not with
removable bars.
Example: large clods result from a low rotor
speed and a high forward speed.
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