Safety Devices; Motorstop Lever; General Information On Mulching; When Is Mulching Permissible - Viking MB 4 R Manual De Instrucciones

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9. Safety devices

9.1 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.
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.
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.
10. Notes on working with
the machine

10.1 General information on mulching

During mulching, the cut grass is chopped
up several times through a special air flow
guidance system in the mower blade area
and then blown back into the turf. The
clippings remain on the lawn.
Benefits
The decomposing clippings return organic
nutrients to the soil, serving as a natural
fertiliser.
0478 111 9924 C - EN
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?

VIKING 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. (
10.3)
Caution
If the cutting height is too low or the
grass is wet, the housing may
become clogged, blocking the
blade!
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. Operating the machine

11.1 Starting the engine

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.
● Press the motorstop lever (1) to the
handlebar and hold.
● Slowly pull out the recoil starter rope (2)
to the point of compression resistance.
Then pull forcefully and quickly to arm's
length.
● Slowly return the 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.
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