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transfers excess traction over to the right wheel, preventing the machine from dragging to the left.
Compactness of the soil:
Every type of soil exhibits its own properties. These properties have critical influence on the speed
and ease at which the blade is able to chop its way through the soil. Extreme soil compositions car-
ry with them a number of inconveniences that negatively influence the operation of the machine :
•
Soil that is too thick (clay, for example) is composed of tiny bits of particles, making it ex-
tremely homogeneous. Theoretically speaking, this type of soil would appear to be easy for
the blade to penetrate; however, due to the fact that it forms a dense and solid mass, it clumps
onto the blade causing it to move very slowly (with greater inertia). This introduces extra
jarring and forces the operator to move slower.
•
Soil that is too loose (sand, for example), cuts very easily given its loose composition; how-
ever, this does not always produce the finest result (in terms of smoothness and sharpness).
Sodded lawn is also not entirely optimal.
•
Stones lodged into the ground will not be cut by the jabbing of the blade. Thus, if a stone is
ever in the blade’s path, it has to force the stone out of the way in order to proceed further.
Tiny rubble (Ø < 20 mm) is easily cast aside and does not really interrupt operation. Large
stones are a bit more imposing, creating hindrances that would be far too great a challenge
for the machine. In such cases the machine might become thrown heavily out of alignment as
it attempts to detour its way around the object. This makes it impossible to make a straight
cut.
If there are too many such stones in the ground, then the machine cannot be used, unless these
objects have been removed.
Whilst working, always be mindful of these key factors, so as to properly be able to comprehend
the behaviour and functioning of the machine.
9.4.
2 Thrusting the blade into the ground
Once the motor has begun run-
ning, it can be seated into the
ground. If the motor is not run-
ning, then there is the possibility
that you will deform or break the
foot pedal.
•
Be sure to check that the motor is running.
• Tilt the machine forward over the traction tyres so that the body supports itself against the
ground and so that the tyres can be lifted.
• Hold the machine in this position and use your right foot to press down on the pedal. The
blade arm will drop down and the pinion will lock into a certain position.
• The pedal comes with a ratcheting mechanism, so that the step-like motion can repeat until
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