Thermal Motor Overload Protection; Safety Devices; Two-Hand Operation; Operating The Machine - Stihl RMA 339 Manual De Instrucciones

10.6 Thermal motor overload
protection
The electronics switch off the motor if it
becomes overloaded during operation.
Three red LEDs in the battery illuminate if
a thermal overload occurs. (
Causes for an overload:
– blunt mowing blade
– 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
Resume normal operation of the machine
following a cooling period of up to 10 min
(depending on the ambient temperature).
( 12.)

11. Safety devices

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; STIHL recommends STIHL
specialist dealers.
11.1 Safety plug
The motor can only be switched on when
the safety plug is inserted (
0478 131 9927 C - EN
11.2 Safety devices
The lawn mower is equipped with safety
devices, which prevent inadvertent contact
with the mowing blade and with ejected
clippings.
8.5) 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.
Measuring run-down time
Following motor start-up, the blade rotates
and a wind noise is audible. The run-down
time corresponds to the duration of the
wind noise after the motor stops. This can
be measured using a stopwatch.
9.2).

12. Operating the machine

12.1 Preparatory measures

Risk of injury!
Observe the safety instructions in
the section "For your safety". (
● Charge the battery and insert it into the
battery compartment. ( 8.4)
● Insert the safety plug. (
12.2 Switching on lawn mower
Do not switch the lawn mower on in
tall grass. Select a higher cutting
height setting if the motor is difficult
to start.
● 1 Press and hold the ON button (1).
● 2 Pull motorstop lever (2) to the
handlebar and hold.
● The ON button (1) can be released
once motorstop lever (2) is pulled.

12.3 Switching off lawn mower

● Release motorstop lever (1).
Motor and mowing blade come to
a stop after a short run-down time.
4.)
9.2)
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