Prime The Water Supply - NorthStar M15781120F Owner's Manual

Select Nozzle for Spray Gun
Your pressure washer is equipped with four high-
pressure nozzles and one low-pressure nozzle.
Generally, the wider the spray angle of the nozzle, the
lower the spray impact produced. Select the
appropriate nozzle for the job based on the following
table:
Color of Nozzle:
Red
Yellow
Green
White
Black-Low pressure
NOTE: You must use the low pressure black nozzle for
spraying chemicals.
Attach Nozzle to Spray Gun
WARNING: Depressurize First
Any time you remove/install/change a nozzle, you
must depressurize hose line by squeezing the spray
gun trigger while the engine is off. Even if the
engine has been off for a long period of time, the
hose may remain dangerously pressurized.
1. Make sure the engine is off and the hose line
depressurized.
2. To install the nozzle, pull the collar back and twist
the nozzle firmly into the coupler on the end of the
wand
Spray Used For:
Angle
0 Highest Impact
15 Tough Stains/Stripping
25 General
40 Light Cleaning
65 Chemicals
Nozzle
Trigger
3. Release the collar, making sure it springs back and
re-seats to its original (non-retracted) position.
Check the connection by pulling on the nozzle to
ensure a tight connection -- if correctly inserted,
nozzle will rotate but not pull out.

Prime the Water Supply

Turn on water supply and squeeze the
trigger
CAUTION: Water Pressure
Never run the pump without the water supply
connected and turned on. Operating the pressure
washer without a sufficient incoming flow of water
will damage the pump.
 Turn on the water supply. Make sure the water
supply is steady and flowing at a rate 20% over the
rated flow of your pump. (Reference the flow rate
table under the Connect Hoses, Water Supply, and
Nozzle" section).
 Purge air from the water supply hose by squeezing
the trigger until a steady stream of water flows out of
the nozzle at low pressure. (Air in the hoses can
cause damage to the pump, so always make sure all
the air is out of the hoses before starting the
pressure washer engine.)
Make sure the water supply hose is not kinked. A

kinked hose will provide insufficient water supply to
the pump and reduce its life. Make sure the hose
remains unkinked after moving the pressure washer.
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