Stihl WP 600.0, Instruction Manual, Page: 23 / 276

■ Water can freeze in water pump components
at temperatures below 0°C. This can damage
the water pump.
► Drain the water pump.
4.11 Cleaning, Maintenance and
Repair
WARNING
■ The water pump may inadvertently start if the
engine is running during cleaning, mainte‐
nance or repair. This may result in serious
injury to people and damage to property.
► Stop the engine.
■ The muffler and engine may be hot after the
engine has been running. This may result in
people burning themselves.
► Wait until the muffler and engine have
cooled down.
■ Abrasive cleaning agents or using a water jet
or sharp objects for cleaning may result in
damage to the water pump or hoses. If the
water pump or hoses are not cleaned cor‐
rectly, components may no longer operate cor‐
rectly and safety devices may be disabled.
This may result in serious injury to people.
► Clean the water pump as described in this
instruction manual.
► Clean the hoses as described in this
instruction manual.
■ If the water pump or hoses are not maintained
or repaired as described in this instruction
manual, components may no longer operate
correctly and safety devices may be disabled.
This may result in serious or fatal injury to
people.
► Maintain or repair the water pump as
described in this instruction manual.
► Maintain hoses as described in the instruc‐
tion manual for the hoses used.
5 Preparing Water Pump for
Operation
5.1 Preparing the Water Pump for
Operation
The following steps must be performed before
commencing work:
► Remove packaging material and transport
locks.
► Make sure that the water pump is in safe con‐
dition, 4.6.
► Clean the water pump, 14.1.
► Connect the water pump to a water source,
6.1.
► Fill the water pump housing with water, 6.2.
► Refuel the water pump, 7.1.
► Add engine oil, 7.2.
► Check the controls, 9.1.
► If the steps cannot be performed: do not use
the water pump and consult a STIHL specialist
dealer.
6 Connecting to a water
source
6.1 Connecting the Water Pump to
a Water Source
The water pump can take in water from rain bar‐
rels, cisterns and from flowing or standing water.
In order for the water to be taken in, the differ‐
ence in height between the water pump and the
water source must not exceed the maximum suc‐
tion head (a), 18.1.
The suction hose must be inherently stable to
prevent collapse in the event of negative pres‐
sure.
The suction strainer must be used.
Attaching the hose connections
► Stop the engine.
► Screw on union nut (1) together with connect‐
ing piece (2) and seal (3). Do this at both
openings.
5 Preparing Water Pump for Operation English
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