North Star 157597, Owner'S Manual, Page: 26 / 66

Operation
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low pressure adhere better to the surface being cleaned, allowing the formula time to react
and remove dirt more effectively.
Note: An external chemical injector pump is not recommended for use with this pressure washer.
WARNING :
Chemical spraying
•
Never spray acids, corrosives, or abrasive or flammable liquids. Breathing hazards, surface
burns/corrosion, or fire/explosion could result.
•
Follow the chemical manufacturer's label instructions for proper use and handling of the
chemical. Understand all safety hazards and first aid for all chemicals being used. Always
wear protective gloves when handling and cleaning with chemicals, and wear other
protective gear as directed by chemical manufacturer. Always dispose of hazardous fluids
per local, state, and national guidelines.
Use only NorthStar pressure washer chemicals or chemicals specifically formulated for use with
pressure washers.
CAUTION: Non-approved chemicals can damage pressure washer components (seals, wand, hoses,
pump, etc.) and be harmful to the environment.
Prepare the pressure washer for chemical spraying using the following steps:
1. Prepare (dilute) the chemical cleaning solution as required for the job.
(Note: The chemical injector is adjustable and will mix the chemical solution into the spray up
to a maximum ratio of 1 part chemical solution to 13 parts water.)
2. Disconnect the high pressure hose from the water outlet.
3. Snap the quick couple chemical injector onto the water outlet, then snap the high pressure hose
onto the chemical injector. See Figure 10.
4. Submerge the suction strainer connected to the braided chemical hose into a bucket containing
the chemical solution. See Figure 10.
Strainer
Chemical Injector
High Pressure Hose
Water Outlet
Diluted
Chemical
Adjustment Knob
Figure 10