Notes On Working With The; General; Mowing On Slopes; Correct Motor Load - Viking ME 339 Gebrauchsanleitung

9. Notes on working with the

machine

9.1 General

Risk of injury!
Untangle any knots in the cable
immediately.
Guide the electric cable behind you
when mowing. Electric cables can
be inadvertently cut when mowing
and present a tripping hazard. They
therefore involve a high accident
risk. For this reason, mow so that
the electric cable is always visible
in the area of grass that has already
been cut.
To ensure a perfect, thick lawn, mow
regularly and keep the grass short.
Do not cut the lawn too short in hot, dry
conditions as it will dry out or burn in the
sun and become unsightly.
The cutting pattern will be better with a
sharp blade than with a blunt one; the
blade should therefore be sharpened
regularly (VIKING specialist dealer).

9.2 Mowing on slopes

For safety reasons, the lawn mower
must not be used on inclines of
more than 25°. A slope inclination of
25° (46.6%) corresponds to a vertical
height increase of 46.6 cm for a 100 cm
horizontal distance.
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9.3 Correct motor load

Do not switch on the lawn mower in tall
grass or at the lowest cutting height.
The lawn mower load must never cause
the motor speed to drop significantly.
If the speed drops, select a higher cutting
height setting and/or reduce the rate of
feed.

9.4 If the mowing blade blocks

Switch off the motor immediately and
disconnect the plug. Then eliminate the
cause of the fault.

9.5 Thermal motor overload protection

If an overload of the motor occurs during
operation, the built-in thermal overload
protection device automatically
deactivates the motor.
Causes for an overload:
– mowing excessively high grass or
cutting height adjusted too low,
– excessive rate of feed,
– inadequate cleaning of the cooling air
guide (inlet slots),
– mowing blade is blunt or worn,
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– unsuitable or excessively long electric
cable – voltage loss (
Recommencing operation
Resume normal operation of the machine
following a cooling period of up to 10 min
(depending on the ambient temperature)
( 11.).

10. Safety devices

10.1 Two-hand operation
The motor can only be switched on by
pressing and holding the start button with
the right hand and then pulling the
motorstop lever to the handlebar with the
left hand.

10.2 Motor run-down brake

When the motorstop lever is released, the
mowing blade comes to a complete
standstill in less than three seconds.
An integrated motor run-down brake
shortens the run-down time until the blade
stops.
11.1).
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