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Stihl RM 443 User Manual

Stihl RM 443
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0478 111 9841 A - EN
22
Release the detent lever (2) and allow it
to engage.
8.5 Level indicator
The upper part of the grass catcher
box features a level indicator (1).
The flow of air that is created by the rotary
movement of the mowing blade and is
responsible for filling the grass catcher box
raises the level indicator (2):
The grass catcher box is filled with
clippings.
When the grass catcher box is full, this
flow of air is reduced and the level
indicator drops (3):
Empty filled grass catcher box (Ö 11.4).
The machine is equipped with several
safety devices for safe operation and for
the prevention of improper use.
9.1 Safety devices
The lawn mower is equipped with safety
devices, which prevent inadvertent contact
with the mowing blade and with ejected
clippings.
These include the housing, discharge flap,
grass catcher box and correctly installed
handlebar.
9.2 Motorstop lever
The lawn mower is equipped with a
motorstop device.
The engine stops when the motorstop
lever is released during running operation.
The engine and blade come to a standstill
within 3 seconds.
Measuring the run-on time
Following engine start-up, the blade
rotates and a wind noise is audible. The
run-on time corresponds to the duration of
the wind noise after the engine stops. This
can be measured using a stopwatch.
A perfect, thick lawn is achieved by
Mowing at low driving speeds.
Mowing regularly and keeping the grass
short.
Not cutting the lawn too short in hot, dry
conditions as it will be burnt by the sun
and become unsightly.
Using a sharp mowing blade – mowing
blade should therefore be sharpened
regularly (specialist dealer).
Changing the cutting direction regularly.
10.1 Working area for operator
For safety reasons, the operator
must stay within the working area
behind the handlebar when starting the
engine and when the engine 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. (Ö 4.)
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) again so that it is rolled up
again.
Repeat the procedure until the engine
starts.
9. Safety devices
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.
13
Risk of injury!
If the run-on time of the blade
exceeds this delay, stop using the
machine and take it to your
specialist dealer.
10. Notes on working with
the machine
11. Operating the machine
Do not start the engine in tall grass.
Select a higher cutting height
setting if the engine is difficult to
start.
Thanks to the fixed throttle setting,
the engine always operates at the
optimum working speed after
starting.
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Stihl RM 443 Specifications

General IconGeneral
TypeWalk behind lawn mower
Motor typeV-twin cylinders OHV
Cutting width410 mm
Grass catcherYes
Product colorBlack, Orange, White
Uncertainty K2.05 m/s²
Cutting systemRotary blades
Number of wheels4 wheel(s)
Rotational speed2800 RPM
Maximum lawn area1200 m²
Sound power level94 dB
Handle(s) featuresSoft grip
Vibration emission4.1 m/s²
Engine displacement140 cm³
Sound pressure level2 dB
Maximum cutting height75 mm
Minimum cutting height25 mm
Grass collecting volume55 L
Number of height positions6
Motor power2.8 hp
Engine power2100 W
Power sourceGasoline
Weight and Dimensions IconWeight and Dimensions
Weight23000 g

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