Husqvarna 105 Operator's Manual page 27

Slopes
The boundary wire can be laid across a slope that
slants less than 15%.
The boundary wire should not be laid across a slope
that is steeper than 15%. There is a risk that the
robotic lawnmower will find it difficult to turn there.
The robotic lawnmower will then stop and the Outside
working area fault message is displayed. The risk is
at its greatest in damp weather conditions, as the
wheels can slip on the wet grass
However, the boundary wire can be laid across a
slope steeper than 15% if there is an obstacle that
the robotic lawnmower is allowed to collide with, for
example, a fence or a dense hedge.
The robotic lawnmower can
mow lawns that slope up to
25 cm every metre (25%)
inside the working area.
Areas that slope more must
be demarcated by the
boundary wire.
When a part of the working
area's outer edge slopes
more than 15 cm per distance
metre (15%), the boundary
wire should be laid 20 cm in
on the flat ground before the
beginning of the slope.
3. INSTALLATION
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3012-946
3012-947
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3012-674
English - 27