North Star M157594AF.1 Owner's Manual page 27

 It mixes the cleaning chemical into a low pressure spray. Cleaning chemicals applied under
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:
 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
Acquire
formulated for use with pressure washers.
cleaning
chemical
CAUTION: Non-approved chemicals can damage pressure washer components
Prepare the pressure washer for chemical spraying using the following steps:
Prepare for
chemical spray
1. Prepare (dilute) the chemical cleaning solution as required for the job.
(if planning to
use)
2. Disconnect the high pressure hose from the water outlet.
3. Snap the quick couple chemical injector onto the water outlet, then snap the
4. Submerge the suction strainer connected to the braided chemical hose into a
Operation
Chemical spraying
(seals, wand, hoses, pump, etc.) and be harmful to the environment.
(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.)
high pressure hose onto the chemical injector. See Figure 10.
Adjustment Knob
Water Outlet
Chemical Injector
bucket containing the chemical solution.
Strainer
27
High Pressure Hose
Diluted
Chemical
Figure 10