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4 Safety Precautions
￭ The water pump’s ignition system produces sparks.
Unconfined sparks may cause a fire or an explosion in an
easily combustible or explosive environment. This can
result in serious or fatal injuries and damage to property.
► Use the spark plugs described in this instruction
manual.
► Insert and tighten down the spark plug.
► Connect the spark plug boot and press it down firmly.
￭ The water pump can be damaged if it is run on a fuel
mixture consisting of unsuitable gasoline or an unsuitable
two-stroke engine oil or if an incorrect mix ratio of gasoline
and two-stroke engine oil is used.
► Mix the fuel as described in this instruction manual.
￭ The mixture of gasoline and two-stroke engine oil can
separate if it is stored for a long period. The water pump
can be damaged if it is used with a fuel mix that has
separated.
► Before refueling the water pump: Thoroughly mix the
fuel.
► Use a mixture of gasoline and two-stroke engine oil that
is not older than 30 days (STIHL MotoMix: 2 years).
4.8 Operation
WARNING
￭ If the engine is not started properly, the user may lose
control of the water pump. This can result in serious
injuries.
► Start the engine as described in this instruction manual.
￭ Exhaust gas is produced when the engine is running.
Breathing in exhaust gas can have toxic effects.
► Operate the water pump in a well ventilated location.
► Never work with the water pump in a well.
► In the event of nausea, headache, visual disturbances,
problems with hearing or dizziness: Stop work and seek
medical advice.
￭ The user’s ability to hear and assess noises is restricted
when wearing hearing protection with the engine running.
► Work calmly and carefully.
￭ If the behavior of the water pump changes during
operation or feels unusual, it may no longer be in a safe
condition. This can result in serious injuries and damage
to property.
► Stop work and contact your STIHL dealer for
assistance.
￭ Water can freeze on the ground and in water pump
components at temperatures below 0°C. The user may
slip, fall and be seriously injured. Damage to property may
occur.
► Do not use your water pump at temperatures below 0°C.
￭ Tugging the suction hose or delivery hose may cause the
water pump to move and turn over. Damage to property
may occur.
► Do not tug the suction hose or delivery hose.
￭ If the water pump is standing on a sloping, rough or
unpaved surface, it may move and turn over. Damage to
property may occur.
► Stand the water pump on a level, paved surface.
► Secure the water pump so that it cannot move.
► Avoid inhaling exhaust gas.
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