North Star M157206S Installation, Operation And Maintenance Manual

Contents

7Operating InstructionsRead and understand the entire manual before operating the pressure washer.Follow these instructions every time you use the pressure washer.I.) Pre-Operation A.) Position the machine for easy access to allcontrols. B.) Position the machine on a solid surface, withless than a three degree slope, and so it isprotected from external damage. C.) Position the machine so that ambient lighting issufficient for the surface you are cleaning to beseen with ease. Use artificial light if needed. D.) Check all connections for signs of wear, cracksand looseness, and replace as required. E.) Check and clean the nozzle orifice. F.) Check and clean the water inlet screen and filter. G.) Read entire manual, especially the importantsafety instructions listed on page 2. H.) Check and maintain proper oil levels in the pumpand engine.II.) Check Your Water Supply A.) Make sure the water supply is clean. Debris cancause excess pump wear and reduceperformance. B.) An insufficient water supply will damage yourpump. Make sure the water supply is steady andis 20% over the rated flow of your pump. Use astopwatch to time how long it takes to fill a 5gallon bucket with your garden hose.Example: If the rated flow is = 3gpmThen required flow = 3 x 1.20 = 3.6gpm5gallons / 3.6gpm = 1.39 minutes1.39min x 60sec/min = 83 secondsTherefore, you must be able to fill a5 gallon bucket in 83 seconds or faster. C.) The water supply garden hose must have aninside diameter of at least 5/8”. If the hose ismore than 100 ft. long, the diameter must be atleast 3/4”. D.) Never use a reservoir tank as a water source.This pressure washer is designed for apressurized water source such as a city waterfaucet. Sucking water out of a tank may causepump cavitation and damage to your pump.However, the inlet pressure of the pump mustnot exceed 115 psi (8 bar). E.) Always use a flexible rubber hose for your watersupply. Do not use rigid piping. F.) Do not pump flammable liquids or liquidscontaining incompatible chemicals or solvents.III.) Attach Garden HoseRemove shipping plug from pump inlet and confirmrubber washer is in place. Attach garden hose.157205157207Rubber washerGardenHosePump Outlet High Pressure HosePump InletChemicalInjectorRubber washerHigh Pressure HoseGardenHosePump OutletChemicalInjectorPump Inlet