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Operating Manual – Snowthrower English
20
Store fuel only in suitable containers
designed to take fuel.
• (STH 5.56, STH 8.66, STH 10.66
C) Check oil level, top up as
required (see “Engine
Instructions”).
• Fill up with fuel (for types of fuel
see specifications in the engine
instructions), close fuel tank cap
and wipe away remains of fuel.
Working with the snow-
clearing machine
Risk of injury
Keep other people, in particular
children, and domestic animals away
from the danger area.
Operate the machine only when it is
in a faultless and safe-to-operate
condition.
Inspect the ground over which the
machine is to operate and remove all
objects which could be picked up by
the machine and hurled out.
Work only when there is sufficient
illumination.
Work slowly and carefully, especially
on uneven or non-hard-surfaced
paths, or when you are moving
backwards.
Set the distance between worm
housing and ground in such a way
that no extraneous material (e.g.
stones) is taken up by the machine.
Caution
Risk of damage to the machine
If the machine strikes extraneous
material (e.g. stones) or exhibits
unusual vibrations, switch off the
machine and inspect it for damage.
Get any damage you discover
repaired before you work with the
machine again.
Before you put the machine to work,
let the engine run to warm up.
When you have finished work, leave
the engine running for a few minutes
to eliminate the moisture.
(STH 5.56, STH 8.66, STH 10.66 C)
Figure 1
• Adjust throw-out chute (see “Set
the direction and distance of
throw”).
• Start the engine (see “Start the
engine”).
• With the coupling levers (1 and 2)
released, choose a forwards gear
with shift lever (6).
• Press coupling lever for worm
drive (1) and hold it down; worm
and throw turbine are driven.
• Press coupling lever for the drive
system (2) and hold it down; the
machine moves forwards and
clears the snow. As long as this
lever is pressed, the coupling lever
for the worm drive (1) is locked in
position and you can let go of it.
• If you want to change gear, first
release the coupling lever for the
drive system (2) and then change
gear with the shift lever (6).
• (In some machines).
The machine is fitted with free-
wheeling levers (3 and 4). Using
these enables the machine to be
steered more easily:
– to the right: pull on the right free-
wheel lever (4)
– to the left: pull on the left free-
wheel lever (3).
(STH 953)
Figure 1
• Adjust throw-out chute (see “Set
the direction and distance of
throw”).
• Start the engine (see “Start the
engine”).
• Press coupling lever (1) and hold it
down; the worm is driven. As a
result of the worm establishing
contact with the ground, the
machine moves forwards.
• If you want to increase the travel
speed, raise the side handle (8)
slightly; the worm has greater
contact with the ground and drives
the machine forwards faster. This
leads (if repeated frequently) to the
rubber lip on the worm wearing
down faster.
• To reduce the travel speed, press
down on the side handle.
Working on slopes
Risk of injury from machine
tipping over
Work slowly and carefully, especially
when you change direction.
Guide the machine up or down the
slope, not crosswise to it.
Watch out for obstacles, do not work
near inclines.
Do not use the machine on slopes
with a gradient greater than 20 %.
Tips on clearing snow
• Clear snow immediately after it has
stopped snowing; later on, the
underneath layer will ice up and
will make clearing the snow more
difficult.
• If at all possible, clear snow in the
direction of the wind.
• Clear the snow in such a way that
the tracks you have cleared
overlap slightly.
Set the direction and
distance of throw
Figure 10
Risk of injury
Do not set the flap (2) of the throw-
out chute (3) in the direction of
people, animals, windows, cars and
doors.
Set the direction of throw
• Put the throw-out chute (3) in the
desired direction by rotating the
handle (Figure 1, item 7)
Set the throw distance
The steeper the angle of the flap (2)
is set, the higher and further the
snow will be ejected.
• For machines with lever (Figure 1,
item 5): press lever forwards to set
the flap (2) higher and back for
lower.
• For machines without lever: loosen
knob (1) and set flap (2) higher or
lower as required.
Start the engine
Figure 2
Danger
If you start the engine in an enclosed
space, move the machine
immediately afterwards into the open
air. Never leave the engine running
in an enclosed space.
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