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P r ov e n P e r f o r m a n ce
Owner's Manual
Read and understand this manual before operating
this machine.
Engine is shipped without oil. Use SAE 30 motor
oil.
Pump is shipped with oil.
plug from the pump and replace it with the vented
dipstick.
Item# 157551
Pressure Washer
00078
Remove the shipping
M157551A
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Table of Contents
Related Manuals for North Star M157551A
Summary of Contents for North Star M157551A
- Page 1 M157551A Item# 157551 Pressure Washer P r ov e n P e r f o r m a n ce Owner’s Manual 00078 Read and understand this manual before operating this machine. Engine is shipped without oil. Use SAE 30 motor oil.
- Page 2 To the Owner: Thank you for purchasing a North Star pressure washer. Your machine is designed for long life, dependability, and the top performance you demand! Take time now to read through this manual so you better understand the machine’s operation, maintenance and safety precautions. Everyone who operates this machine must read and understand this manual.
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Page 3: Table Of Contents
Table of Contents Safety Instructions Specifications Machine Component Identification Assembling the Machine Before Using the Machine the First Time Setting up the Machine Start-Up Instructions 12-15 Shut-Down Instructions Operating the Machine 17-19 Routine Maintenance 20-21 Winterizing the Machine Troubleshooting Guide Accessories... -
Page 4: Safety Instructions
Safety Instructions Read understand these instructions because they deal with safety. Pay particular attention to this safety s ymbol throughout this manual. Failure comply with these instructions may result in property damage, personal injury, or death. IMPORTANT United States Government safety standards have been adopted under the Occupational Safety and Health Act. -
Page 5: Customer Service
Safety Instructions NEVER use the machine when under the NEVER use a hose if exterior damage is influence of alcohol or any other drug. evident. NEVER smoke while operating or fueling NEVER attempt field repairs through an this machine. Only add fuel to the machine unauthorized hydraulic hose repair shop. -
Page 6: Specifications
Specifications Item Number #157551 Pressure Rating (psi) 2500 Flow Output (gpm) Pump Type Triplex Ceramic Plunger Water Supply Standard tap water @ 20-100psi Engine Horsepower Fuel Capacity (quarts) Discharge Hose 3/8” x 30’ Dimensions Length 28” Width 19.5” Height 24” Approximate Weight 88 lbs. - Page 7 Machine Component Identification 00080 00079 Engine ON-Off Sw itch Choke Fuel Shut-OFF Throttle Fuel Tank Fill Recoil Oil Fill Oil Drain Air Filter Muffler (Caution Hot!) Engine Features Benefits • Overhead Valves • More fuel efficient • More powerful (OHV) •...
- Page 8 Machine Component Identification 00089 Unloader Valve Therm al Protector Safety Relief Valve Inlet Outlet Dipstick Pump Features Benefits •Triplex ceramic plungers •Long life, no corrosion •Triplex design •Less vib ration •Industrial crankshaft •Dependable, proven design •Thermal protector •Protects pump from hot water •Safety relief valve •Prevents pump from overpressurizing...
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Page 9: Assembling The Machine
Assembling the Machine Step 1 Your pressure washer is shipped in tw o boxes. Separate and identify the components found in both boxes. Use the assembly instructions found in the cart box to assemble the cart. The components show n below will be in the same box as the engine/pump. 00073 Gun &... -
Page 10: Before Using The Machine The First Time
Before Using the Machine the First Time Follow these instructions before you use the pressure washer the first time. Oil Fill Fill engine with oil. 1. The engine is shipped without oil. 2. Use SAE 30 motor oil. 3. Fill oil to top of fill neck. Remove pump shipping plugs. -
Page 11: Setting Up The Machine
Setting-Up the Machine Read and understand the entire manual before operating the pressure washer. Follow the checklists below every time you use the pressure washer. Pre-Operation Checklist 1.) Position the machine for easy access to all controls, power, and water supply. -
Page 12: Start-Up Instructions
Start-Up Instructions Make sure to follow the pre-operation checklist and water supply checklist on the previous page before proceeding. I.) Attach a Garden Hose Your pressure washer is equipped with a garden hose quick couplers. Follow these steps to use the quick couplers. A.) Spin the socket onto Socket Spin onto Garden... - Page 13 Start-Up Instructions II. Attach the Pressure Hose Specifications: Length 30 feet Inside Diameter 3/8 inch Maximum Pressure 3000 psi Reinforcement 1 w ire Bend Radius 6 inches Mater ial Neoprene Your pressure hose is equipped with 22MM thread-on quick couplers on both ends.
- Page 14 Start-Up Instructions III.) Connect the Lance Your spray lance has the following features and benefits: Features Benefits •4 foot length •Longer reach •Meets UL safety standard •Splits in the middle •Quick accessory changes •Ships in smaller b ox •Less shipping damage •Vented grip •More Comfortab le Connect the lance together using the 22MM thread-on quick coupler.
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Page 15: Start-Up Instructions
Start-Up Instructions IV.) Turn the Water Supply ON Make sure the hose is not “kinked”. A kinked hose will provide insufficient water supply to the pump and will reduce its life. Make sure the hose remains unkinked after moving the pressure washer. V.) Squeeze the Trigger Squeeze the trigger until a steady flow of water sprays out the nozzle. -
Page 16: Shut-Down Instructions
Shut-Down Instructions I.) Turn the engine OFF. II.) Turn the water supply OFF. III.) Squeeze the spray gun trigger to relieve the system pressure. IV.) Remove the water supply garden hose from the pump inlet. V.) Remove the high pressure hose from the pump outlet. NEVER disconnect the high pressure hose from the pump or spray gun while the system is pressurized. -
Page 17: Operating The Machine
Operation Instructions I.) Spray Angle Your pressure washer is equipped with a 0 to 80° adjustable nozzle designed to tackle a variety of cleaning jobs. Generally, narrow spray angles have greater cleaning impact, wider angles cover large areas in less time. Use small angles for the toughest cleaning jobs. - Page 18 Operation Instructions III.) Applying Chemicals a.) Spin the quick couple chemical injector onto the pump outlet hand tight. b.) Submerge the suction strainer in a chemical solution. c.) Adjust the nozzle holder to low pressure by pushing the adjustable nozzle out. You need to change to low pressure if you want to spray chemicals onto the cleaning surface.
- Page 19 Operation Instructions IV.) Adjusting the Unloader Valve The unloader valve determines the operating pressure of the pump. You can adjust the pressure by turning the black knob. However, the unloader is factory pre-set to the maximum system pressure. NEVER alter unloader valve from...
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Page 20: Routine Maintenance
Routine Maintenance I.) Changing the Engine Oil Refer engine manual complete Oil Fill maintenance schedule and engine component identification. 1.) Place an oil pan or container beneath the pressure washer cart. 2.) Drain the old oil by removing the oil plug found near the base of the engine. - Page 21 III.) Changing the Pump Oil 1.) Place an oil pan or container beneath the pressure washer cart. 2.) Drain the old oil by removing the oil plug found under the pump. 3.) Replace the oil plug. 4.) Remove the vented dipstick and fill with oil until half way up the sight glass.
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Page 22: Winterizing The Machine
Winterizing the Pressure Washer Follow these instructions to prevent the pump from freezing during storage. During cold weather, store the pressure washer indoors and move it outdoors before starting the engine. 1.) Disconnect the high pressure hose. Make sure all water is drained from the hose, gun, and lance. -
Page 23: Troubleshooting Guide
Troubleshooting LOW/SURGING PRESSURE Causes Solutions Plugged nozzle Remove nozzle, check for blockage and clean if necessary Worn nozzle Replace nozzle (#3.5) Plugged inlet screen Pull screen out carefully and clean Unloader valve malfuncation Repair/replace unloader Restrictive water supply Use larger diameter water supply hose and/or hose fittings Insufficient flow of water to the pump Increase water flow. -
Page 24: Accessories
• Bend restrictors prolong hose life Chem icals for Pressure Washers Item# Length Ship W t. 2203 30’ 7 lbs. • All North Star chemicals are biodegradabl e 50’ 10 lbs. 156992 • All concentrated ch emicals sold in one gallon 156993 100’ 20 lbs.