5 IMPORTANT SAFETY INSTRUCTIONS
5.7
Connecting the Water Supply
WARNING
■ When the spray gun trigger is released, fluid recoil may
push non-potable water back into the potable water
system.
– Do not connect the pressure washer directly to a
potable water system.
– If hooking up the pressure washer to a potable water
system, a backflow preventer must be installed
between the water tap and the hose. The design of
the backflow preventer must comply with all
applicable water management codes and
regulations in your area.
■ If potable water has passed through the backflow
preventer, it can no longer be regarded as potable water.
To prevent contamination of potable water:
– Follow the rules laid down by the local water supply
company to prevent water flowing back from the
pressure washer into the drinking water main.
– Do not use the pressure washer with dirty water (i.e.,
water that contains sand, dirt or other particulate
matter). If there is a risk that the water supply is dirty,
use an appropriate water filter or find an alternative
water source.
0458-620-8621-A
5.8
Using the Pressure Washer
5.8.1
Before Operation
WARNING
■ Misuse or unauthorized use may result in personal injury
and property damage.
– Use the pressure washer only as described in this
instruction manual.
■ Using a pressure washer that is modified, damaged,
improperly adjusted or maintained, or not completely and
securely assembled can lead to a malfunction and
increase the risk of serious personal injury or death.
– Never operate a pressure washer that is modified,
damaged, improperly maintained or not completely
and securely assembled.
– Always check your pressure washer for proper
condition and operation before starting work,
particularly the spray gun trigger and retaining latch.
– Ensure that the spray gun trigger and retaining latch
move freely. The spray gun trigger must not engage
until the retaining latch is moved to the unlocked
position.
– Never attempt to modify or override the controls or
safety devices in any way.
– If your pressure washer or any part is damaged or
does not function properly, take it to your authorized
STIHL servicing dealer. Do not use the pressure
washer until the problem has been corrected.
■ Before connecting the pressure washer to the power
supply:
– Read and follow the instructions on switching on the
pressure washer, @ 11.1.
– Ensure that the high-pressure hose is in good
condition and not frayed, cracked, deformed or
damaged in any way. Never operate the machine
with a damaged or worn high-pressure hose.
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