Find Breaks In The Loop Wire - Husqvarna AUTOMOWER 420 Operator's Manual

Symptoms Cause
Both the mowing The battery is spent.
and charging times
are shorter than
usual.
The product is The hatch is closed but the START but-
parked for hours in ton is not pushed.
the charging sta-
tion.
Parking mode is activated.
The product is not allowed to operate if
the battery temperature is too high or
too low.
Uneven mowing The product works too few hours per
results. day.
The shape of the work area requires
the use of
the product to find its way to all remote
areas.
The
relation to the layout of the work area.
The work area is too large.
Dull blades.
Long grass in relation to the set cutting
height.
Accumulation of grass by the blade
disc or around the motor shaft.

6.6 Find breaks in the loop wire

Breaks in the loop wire are usually the result of
unintentional physical damage to the wire such
as when gardening with a shovel. In countries
with ground frost, also sharp stones that move in
the ground can damage the wire. Breaks can
also occur due to the wire being stretched
excessively during installation.
Mowing the grass too low right after the
installation can damage wire insulation. Damage
56 - Troubleshooting
Lawn coverage function for
How often? setting is incorrect in
Action
Replace the battery. Refer to
on page 43 .
Push the STOP button to open the
hatch. Enter the PIN code and confirm
with the OK button. Push the START
button and then close the hatch.
Change the operating mode. Refer to
Operating mode Park on page 40 .
Check that the charging station is
placed in an area with protection from
the sun.
Increase the mowing time. Refer to
Schedule on page 26 .
Steer the product to a remote area. Re-
Lawn Coverage on page 29 .
fer to
Check that the correct
ue is selected.
Try limiting the work area or extending
the schedule. Refer to
page 26 .
Replace all the blades. Refer to
place the blades on page 43 .
Increase the cutting height and then
successively lower it.
Check that the blade disc rotates freely
and easily. If not, screw off the blade
disc and remove grass and foreign ob-
Chassis and blade disc
jects. Refer to
on page 42 .
to the insulation may not cause disruptions until
several weeks or months later. To avoid this,
always select the maximum cutting height the
first weeks after installation and then lower the
height one step at a time every second week until
the desired cutting height has been reached.
A defective splicing of the loop wire can also lead
to disruptions several weeks after the splice was
done. A faulty splice can, for example, be the
result of the original coupler not being pressed
together hard enough with a pair of pliers, or that
Battery
How often? val-
Schedule on
Re-
1201 - 004 - 25.03.2020