North Star M157593E Owner's Manual

Operation271. 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 thecoupler on the end of the wand. (Figure 9a)Figure 9a3. Release the collar, making sure it springs back and re-seats to its original(non-retracted) position. (Figure 9b). Check the connection by pulling onthe nozzle to ensure a tight connection -- if correctly inserted, nozzle willrotate but not pull out.WARNING: Make sure the nozzle is correctly inserted. Sprayernozzle can become a projectile and cause serious personal injury orproperty damage if not properly connected to the spray gun. Do notattempt to use different types of nozzles that may not fit the coupler.Figure 9bStep 2. Set Up for Chemical Spray (if desired)Using the proper cleaning chemical for the application can speed up cleaning jobs tremendously.Your pressure washer is equipped with a quick connect chemical injector, which siphonscleaning chemicals into a low-pressure washer spray downstream of the pump. Adequate suctionpressure is created only when the low pressure (black) spray nozzle is used.The introduction of cleaning chemicals via the chemical injector affords the following advantages: It protects the pump from damage because no chemical passes through the pump.CAUTION: Certain chemicals, such as bleach or those containing muriatic acid, willcause pump damage if introduced upstream through the pump's water inlet. It mixes the cleaning chemical into a low pressure spray. Cleaning chemicals applied underNozzle CollarCoupler LanceCollar seated Collar NOT seatedCORRECTINSERTIONNOT FULLYINSERTED