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0478 105 9821 K - EN
Notes on mowing Blade brake clutch (BBC)
NOTE
NOTE
Mulching function
MB 450 M, MB 455 M
To ensure a perfect, thick
lawn, mow regularly and keep
the grass short. Do not cut too
short in hot, dry conditions as
the lawn 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
must therefore be sharpened
regularly (dealer).
Do not mow wet grass or mow
in the rain. The risk of acci-
dents is higher if the grass is
wet (increased danger of
slipping for operator).
For safety reasons, always
use an undamaged grass
catcher bag.
Mulching is performed with
the new multi-blade - i.e. the
grass is cut in steps, chopped
to a fine organic mass in the
housing closed off by the
mulch insert and is ejected
back into the grass to
decompose.
The cuttings must not be
disposed of when mulching,
as the finely chopped grass
decomposes on the lawn,
returns the nutrients in the
cuttings to the plants and also
protects the ground from
drying out.
Time and money is saved for
fertiliser and sprinkling.
Mowing on slopes
In order to ensure an ade-
quate oil supply for the
4-stroke engine, the lawn
mower must not be used on
inclines of more than 25°.
A slope inclination of 25°
corresponds to a vertical
height increase of 46.6 cm for
a 100 cm horizontal surface.
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Mulching procedure
MB 450 M, MB 455 M
Cutting height 4-7 should
be selected for mulching,
as this is the most suitable
range for shredding the
grass.
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It is important to select the
correct operating speed and
height for mulching to allow
the multi-blade to achieve
optimal grass shredding and
a good cutting pattern.
Mulching should not be
performed when the grass is
too high or wet.
Motorstop lever
MB 400, MB 450/ M,
MB 455 E/ M/ C
To stop the engine,
release
C= motorstop lever; the
engine and the mowing
blade come to a complete
standstill after a short
run-down time.
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The model MB 455 BC is
equipped with a blade brake
clutch (BBC).
The blade is switched
on when the engine is
running by pressing
C= blade stop lever and then
pulling
A= blade clutch lever in the
direction of the handle-
bar.
When the blade stop
lever is released, the
blade comes to a
standstill in less than
3 seconds and the blade
clutch lever returns to the
initial position.
The engine continues to
run.
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