Safety Devices - Viking MA 339 Gebrauchsanleitung

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).
Cutting performance
The cutting performance (battery running
time) depends on the properties of the
grass and the selected cutting height. The
cutting performance is enhanced by the
following measures:
● Mow the lawn more frequently
● Increase the cutting height
● Reduce speed of propulsion
● Allow the lawn to dry before mowing.
If required, additional STIHL lithium-ion
batteries can be purchased (special
accessories).
10.2 Working area for operator
● For safety reasons, the operator
must stay within the working area
behind the handlebar when the motor is
running. Always observe the safety
distance provided by the handlebar.
● The lawn mower must only be operated
by one person. Other persons must
keep out of the danger area. (
10.3 Correct motor load
Do not switch on the lawn mower in tall
grass. Select a higher cutting height
setting if the motor is difficult to start.
The lawn mower load must never cause
the motor speed to drop significantly.
0478 131 9926 B - EN
If the speed drops, select a higher cutting
height setting and/or reduce the rate of
feed.
10.4 If the mowing blade blocks
Switch off the motor immediately and
disconnect the mains plug. Then eliminate
the cause of the fault.
10.5 Thermal motor overload
protection
The electronics switch off the motor if it
becomes overloaded during operation.
Three red LEDs in the battery light up if a
thermal overload occurs. (
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).
Recommencing operation
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Resume normal operation of the machine
following a cooling period of up to 10 min.
(depending on the ambient temperature)
( 12.).

11. Safety devices

4.)
The machine is equipped with several
safety devices for safe operation and for
the prevention of improper use.
Risk of injury!
If a safety device is found to be
defective, the machine must not be
operated. Consult a specialist
dealer; VIKING recommends
VIKING specialist dealers.
11.1 Safety plug
The motor can only be switched on when
the safety plug is inserted (
11.2 Safety devices
The lawn mower is equipped with safety
devices, which prevent inadvertent contact
8.5) with the mowing blade and with ejected
clippings.
These include the housing, discharge flap,
grass catcher box and correctly installed
handlebar.
11.3 Two-hand operation
The motor can only be switched on by
pressing and holding the ON button with
the right hand and then pulling the
motorstop lever to the handlebar with the
left hand.
11.4 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.
9.1).
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