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Benefits
The decomposing clippings return organic
nutrients to the soil, serving as a natural
fertiliser.
Advantages
Emptying the grass catcher box and
disposal of the clippings are dispensed
with. Weed growth is slowed down and
significant amounts of fertilizer are saved.
10.2 When is mulching permissible?
STIHL recommends mulching only when
the lawn is dry and the grass is not too
high.
If the grass is too high, the lawn should be
mowed in two stages. (Ö 10.3)
10.3 How should mulching be
performed?
Requirements for good mulching results:
– Set the optimal cutting height: A third of
the grass height should be cut.
– Use well sharpened blades.
– Vary the mowing direction and ensure
that the mowing strips overlap.
Working method in high grass
In high grass, the lawn should be cut in two
stages.
First stage:
The lawn is mowed at the maximum
cutting height.
Second stage:
12 to 24 hours after the first stage, mulch
the lawn to the desired grass height at right
angles to the first mowing direction.
10.4 How often should mulching be
performed?
To ensure a perfect, thick lawn, mulch
regularly and keep the grass short.
Main growth period:
Spring:
mulch at least twice per week.
Summer and autumn:
mulch at least once per week.
11.1 Starting the engine
● Press motorstop lever (1) to the
handlebar and hold.
● Slowly pull out recoil starter rope (2) to
the point of compression resistance.
Then pull vigorously and quickly to
arm’s length.
● Slowly return recoil starter rope (2) so
that it is rolled up again.
Repeat the procedure until the engine
starts.
Thanks to the fixed throttle setting, the
engine always operates at the optimum
working speed after starting.
11.2 Stopping the engine
● Release motorstop lever (1).
The engine and blade come to a
standstill within 3 seconds.
11.3 Self-propulsion
(RM 4 RT, RM 4 RV, RM 4 RTP)
The RM4RT, RM4RV, RM4RTP
models are equipped with front-wheel
drive.
RM 4 RT, RM 4 RTP:
One forward drive speed (single-speed
gearbox)
RM 4 RV:
Continuously variable forward drive speed
when driving (Vario gearbox)
Switching on self-propulsion
● Start the engine. (Ö 11.1)
● Pull self-propulsion lever (1) to
the handlebar and hold.
Self-propulsion is switched on and the
lawn mower moves forward.
Setting the drive speed (RM 4 RV):
● Increasing the driving speed:
Push Vario drive lever (2)
forwards when driving.
● Reducing the driving speed:
Pull Vario drive lever (2)
rearwards when driving.
Caution
If the cutting height is too low or the
grass is wet, the housing may
become clogged, blocking the
blade!
11. Operating the machine
Avoid damage to the machine!
Top up the engine oil before starting
for the first time (see engine
instruction manual).
Do not start the engine in tall grass
or at the lowest cutting height. This
makes starting difficult.
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Avoid damage to the machine!
Only actuate Vario drive lever (2)
when the engine is running.
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Weight and Dimensions
