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– Check the area where the machine is to
be used and remove all objects that can
get picked up and thrown out by the ma-
chine.
– Work only with adequate lighting.
– Only use the machine in walking speed.
– Work slowly and safely especially on
uneven or loose paths and while revers-
ing.
– Adjust the distance between the snail
casing and the underground floor in
such a way that the appliance does not
pick up any foreign bodies (such as
stones).
Danger
Risk of suffocation on account of carbon
monoxide! Only operate the combustion
engine while out in the open.
Note
Follow the national/ local regulations for the
usage times (ask the local authorities, if re-
quired).
Danger
Long hours of using the appliance can
cause circulation problems in the hands on
account of vibrations.
It is not possible to specify a generally valid
operation time, since this depends on sev-
eral factors:
– Proneness to blood circulation deficien-
cies (cold, numb fingers).
– Low ambient temperature. Wear warm
gloves to protect hands.
– A firm grip impedes blood circulation.
– Continuous operation is worse than an
operation interrupted by pauses.
In case of regular, long-term operation of
the device and in case of repeated occur-
rence of the symptoms (e.g. cold, numb fin-
gers) please consult a physician.
Tips for clearing the snow
– Clear up immediately after the snowfall;
otherwise, the lower layer becomes ice
and makes clearing difficult.
– If possible, clear the snow in the direc-
tion of the wind.
– Clear the snow in such a way that the
clearing tracks overlap a little.
Working on slopes
Danger
Risk of injury!
Danger of tipping if gradient is too high.
– Do not use the appliance on slopes with
an inclination greater than 20%.
– Work slowly and cautiously, especially
while changing the direction of travel.
– Drive up and down the slope - never di-
agonally to the slope.
– Pay attention to hurdles - do not work
close to the inclination.
18
English
Setting the direction and distance of
throw
Figure 9
Danger
Risk of injury! Do not direct the flap (2) of
the discharge shaft (3) towards persons,
animals, windows, cars and doors.
Adjust throw direction
Not STH 953 W:
Bring the discharge shaft (3) to the de-
sired direction by turning the crank (fig-
ure 1, item 7).
Only STH 953 W:
Move the discharge chute (3) into the
desired direction using the handle (4).
Note
Do not use the handle (4) to lift the ma-
chine.
Adjust the throw distance
Deeper the flap (2), so much higher and far-
ther will be the snow discharge.
Machines with lever:
Press the lever (figure 1, item 5) to-
wards the front to set the flap (2) higher
and vice-versa.
Machines without lever:
Loosen the hand knob (1) and adjust
the flap (2) higher/ lower as required.
Start the engine
Figure 3
Read the operating instructions of the
engine manufacturer before start-up
and follow the safety instructions care-
fully.
Release the clutch bow/clutch lever for
auger and travel drive before starting.
Check tank contents and oil level; refill
oil and fuel (see "Engine Instructions
Booklet").
Note
Some models do not have a gas lever, the
speed is adjusted automatically. The en-
gine always runs with optimized speed.
Starting using rope starter
Set the fuel tank tap, if there is one, to
"ON/OPEN".
Insert the ignition plug into the spark
plug.
Not STH 953 W:
Turn gas lever, if there is one, to "fast".
On machines without gas levers, set the
engine stop switch to "ON".
Set the choke for cold start to "ON/
CHOKE".
Insert the ignition key into the ignition
lock.
Press cold start help (Tupfer) once;
press it twice to seven times during cold
weather (depending on the engine
type).
Pull the rope starter slowly till you feel
the resistance and then give it a quick
and hard tug. Do not allow the rope
starter to recoil immediately - just let it
go back slowly.
Reset the choke back to "RUN/OFF" in
a step-by-step manner, if the engine is
running.
Starting using electrical starter (option-
al)
(Not STH 953 W)
Danger
Risk of electric shock.
– Do not use the electric starter in the rain.
– Check whether the mains are secured
with a leakage current protection switch.
If not, get an electrician to install a suit-
able switch.
To connect the electrical starter to the
mains, use only extension cables (not part
of standard delivery) that have been ap-
proved for use in the open and have a safe-
ty conductor.
For example: for a max. length of 50 m:
– H07RN-F 3x1.5 mm
up to -25 °C
2
– H07BQ-F 3x1.5 mm
up to -40 °C
2
Danger
Risk of electric shock.
– Prior to each engine start, check the ex-
tension cables and the cables/connec-
tors on the engine for damage.
– Please arrange immediately for the ex-
change of damaged parts by a skilled
electrician.
– Never start the machine with damaged
parts.
Warning
Improper connection of the electrical starter
can cause damage to the machine or to
property in its vicinity. Check whether the
mains are being operated according to in-
structions on the type plate of the starter
and is protected with appropriate fuses.
Set the fuel tank tap, if there is one, to
"ON/OPEN".
Insert the ignition plug into the spark
plug.
Turn gas lever, if there is one, to "fast".
On machines without gas levers, set the
engine stop switch to "ON".
Insert the ignition key into the ignition
lock, do not turn it.
First connect the extension cable to the
mains and then connect it to the mains
socket.
Set the choke for cold start to "ON/
CHOKE".
Press cold start help (Tupfer) once;
press it twice to seven times during cold
weather (depending on the engine
type).
Press the starter button (max. 5 sec-
onds) till the engine starts. Wait for at
least 30 seconds before making a fresh
start.
Reset the choke back to "RUN/OFF" in
a step-by-step manner, if the engine is
running.
First disconnect the extension cable
from the mains and then from the elec-
trical starter.
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