Table of Contents
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Pressure Washer:
Instructions for Installation/Set-up, Operation, Maintenance, & Storage
This pressure washer produces cold water high pressure spray. Cleaning chemicals may be incorporated into the
spray if desired. The pressure pump for this equipment is powered by a gasoline internal combustion engine.
• CO Poisoning: Exhaust from engine contains carbon monoxide, a poisonous gas that can cause carbon monoxide
poisoning and possible death if inhaled. ONLY run pressure washer OUTDOORS and at least 20 feet from the home, away
from windows, vents and air intakes, to allow proper ventilation. If you start to feel sick, dizzy, or weak while using the
pressure washer, shut off the engine and get to fresh air RIGHT AWAY.
• Injection Injury: High-pressure spray can pierce skin and underlying tissues, leading to serious injury and possible
amputation. Such an injection injury can result in blood poisoning and/or severe tissue damage.
• Flying Debris: High-pressure spray can cause flying debris and possible surface damage.
• Electric Shock: Operating equipment in wet conditions or near water can cause electric shock.
• Chemical Exposure: Cleaning chemical vapors or contact with skin may be hazardous.
• Fire/Explosion: Engine sparking can ignite fuel or other flammable liquids or vapors in the vicinity. Hot exhaust from engine
can ignite combustible materials.
• Burns: Pressure washer pump and engine are hot surfaces that can cause burn injuries.
Detailed safety information about these hazards appears throughout this manual.
Inspect Upon Delivery: FIRST! Inspect for missing or damaged components. See "Initial Set-Up" section for where
to report missing or damaged parts.
Add Engine Oil: Engine is shipped without oil. See engine manual for instructions on capacity and viscosity
recommendations.
Pump: Pump is shipped with oil. Check pump oil level before starting. Remove shipping plug and install vented fill
cap.
Water Flow Requirements: Make sure your supply water flow rate is 20% higher than the pressure washer's flow
rate (see "Operations" section for detail) and that your water is clean and particle free.
Chemical Spraying: Use only approved pressure washer chemicals designed for high-pressure use.
Storage: Do not allow water to freeze in the pump, hose, or spray gun(s). See "Storage" for more information.
Maintenance Schedule: Engine and pump require periodic inspection and servicing to keep pressure washer
functioning efficiently. See "Maintenance Schedule Summary" for frequency of servicing.
Any Questions, Comments, Problems, or Parts Orders
Owner's Manual
Machine that cleans dirty surfaces with
high pressure water.
SPECIAL HAZARDS
Equipment Protection Quick Facts
Call NorthStar Product Support 1-800-270-0810
M157121A.5
ITEM NUMBER: 157121,157122,157123,157124,
SERIAL NUMBER: _____________
WARNING
157127,157130, 157132,157133
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Table of Contents
Related Manuals for North Star 157121
Summary of Contents for North Star 157121
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Page 1: Equipment Protection Quick Facts
M157121A.5 ITEM NUMBER: 157121,157122,157123,157124, 157127,157130, 157132,157133 SERIAL NUMBER: _____________ Owner’s Manual Pressure Washer: Machine that cleans dirty surfaces with high pressure water. Instructions for Installation/Set-up, Operation, Maintenance, & Storage This pressure washer produces cold water high pressure spray. Cleaning chemicals may be incorporated into the spray if desired. -
Page 2: Table Of Contents
Table of Contents Equipment Protection Quick Facts ............................1 TABLE OF CONTENTS ..............................2 ABOUT YOUR PRESSURE WASHER ......................... 4 SPECIFICATIONS ................................ 5 COMPONENT IDENTIFICATION ..........................7 SAFETY ..................................8 Hazard Signal Word Definitions ............................8 SAFETY LABELING ..............................9 Safety Decal Locations ................................. - Page 3 Change Pump Oil ................................27 TROUBLESHOOTING ..............................28 PARTS EXPLOSION- MODEL #157121,157122,157123,157124,157127,157130 ............ 29 PARTS LIST - MODEL #157121,157122,157123,157124,157127, 157130 ............... 30 PARTS EXPLOSION - MODEL #157132, 157133 ...................... 31 PARTS LIST - MODEL #157132, 157133 ........................32 PUMP ASSEMBLIES - COMET DWD, CAT4DNX, CAT4SPX ................... 33 PUMP ASSEMBLY –...
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Page 4: About Your Pressure Washer
About Your Pressure Washer Thank you for purchasing a NorthStar Pressure Washer! Site Location. Intended for outdoor use only. It is designed for long life, dependability, and top Personal Protection. Wear safety apparel during performance. operation, including safety glasses with side and top Intended Use. -
Page 5: Specifications
Specifications 157121 157122 FLOW OUTPUT FLOW OUTPUT PSI (bar) 3100 (207) PSI (bar) 3100 (207) 2.5 (9.4) 2.5 (9.4) GPM (I/min) GPM (I/min) 140° F (60°C) 140°F (60°C) Max Water Temp Max Water Temp ENGINE ENGINE Engine Honda GC 190... - Page 6 Specifications 157127 157130 FLOW OUTPUT FLOW OUTPUT PSI (bar) 4200(276) PSI (bar) 3000 (207) 3.5 (13.2) 5.0 (18.9) GPM (I/min) GPM (I/min) 140°F (60°C) 165°F (74°C) Max Water Temp Max Water Temp ENGINE ENGINE Engine Honda GX 390 Engine Honda GX 390 389 cc 389 cc Displacement...
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Page 7: Component Identification
Component Identification Fig06755 Handle: Designed for easy cart movement. Pressure Hose: Attach quick couplers to gun and water outlet. Chemical Hose: Submerge in cleaning solution. Water Pump: Inspect for loose/broken parts prior to each use. A device that moves fluid through a combination of suction and displacement. -
Page 8: Safety
Safety Hazard Signal Word Definitions This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death. DANGER (red) indicates a hazardous situation, which if DANGER not avoided, will result in death or serious injury. -
Page 9: Safety Labeling
Safety Labeling Safety Decal Locations WARNING ALWAYS make sure safety labels are in place and in good condition. If a safety label is missing or not legible, order new labels from NorthStar Product Support at 1-800-270-0810. FIG06750 On-Product Warning Labels Location Part Numbers Description... - Page 10 Safety Labeling Safety Decals To order replacement safety labels, call NorthStar Product Support at 1-800-270-0810.
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Page 11: Initial Set-Up
Initial Set-Up Step 1. Inspect & Unpack Upon receiving your item check for missing or damaged parts. See “Component Identification” section of this manual for a diagram of the pressure washer and its components. For missing or damaged components, contact Product Support at 1-800-270-0810. •... - Page 12 Initial Set-Up Hardware Bag PART# 800110 FOR (MODEL #157121,157122,157123,157132) OR PART# 38578 PART# 800111 FOR (MODEL #157124,157127,157133), T-HANDLE KNOBS PART# 800425 (MODEL #157130) QTY 2 NOZZLES (ALL MODELS) QTY 4 PART# 35198 NOZZLE GROMMET VENTED FILL CAP QTY 5 QTY 1...
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Page 13: Step 2. Assembly
Initial Set-up Step 2. Assembly • Push the pressure washer in front of you has you walk. Note: Remove contents from packaging to begin • To turn, push down slightly on the handles and assembly. pivot the pressure washer on its wheels. Handle &... -
Page 14: Install Spark Arrestor (If Required)
Initial Set-Up 2. Make sure the engine is at least 7 feet from all Positioning: combustible materials and structures during 1. The pressure washer should be positioned on a operation. firm, level (less than 3 degree slope), heat- 3. Keep a fire extinguisher rated "ABC" nearby. resistant surface with good drainage and a Keep it properly charged and be familiar with its nearby water supply. -
Page 15: Operation
Operation Follow Safety Rules for Operation set-up and operation. Do not allow anyone to operate the pressure washer who has not read the Owner's After you have checked and fueled the equipment Manual and been instructed on its safe use. and positioned it in a suitable worksite, it is time to Adult Control only. -
Page 16: Preparing For Operation
22158 gun is equipped with a built-in trigger safety latch to SAE 30 Non- guard against accidental trigger release. Rotate safety Detergent Oil or 157121,157122 Comet DWD Comet Pump Oil latch to the locked position when not spraying. (Part# 22022) Leaving unattended. -
Page 17: Inspect Fuel System/Check For Leaks
Operation Add Fuel If possible, move the pressure washer away • from spilled fuel on the ground. WARNING Wipe up spilled fuel and wait 5 minutes for • Fuel Fire/Explosion Hazard excess fuel to evaporate before starting engine. Gasoline is highly flammable and explosive. Heat, sparks, and flames can ignite fuel vapors, which can Fuel soaked rags are flammable and should be •... -
Page 18: Connect Hoses, Water Supply, And Spray Nozzle
Model# Time to Fill 5 Gallon • Never use a finger or skin to check for leaks. Bucket • Never operate pressure washer with damaged or 157121,157122 100 sec missing hoses/parts. 157123,157132 100 sec • Never attempt to repair a high-pressure hose or... -
Page 19: Prime The Water Supply
Operation Coupler WARNING Depressurize First Any time you remove/install/change a nozzle, you must depressurize hose line by squeezing the spray gun trigger while the engine is off. Even if the Collar engine has been off for a long period of time, the Output High Pressure hose may remain dangerously pressurized. -
Page 20: Set Up For Chemical Spray (If Desired)
Operation the nozzle at low pressure. (Air in the hoses can WARNING cause damage to the pump, so always make sure all Chemical Spraying the air is out of the hoses before starting the • Never spray acids, corrosives, or abrasive or flammable liquids. -
Page 21: Start-Up Procedures
Operation Start-Up Procedures Instructions for selecting a nozzle can be referenced Start the Engine to Power the Pump in the “Connect Hoses, Water Supply, and Spray Nozzle” section. See the subsection “Select Nozzle 1. Make sure water supply is connected and primed. for Spray Gun”. -
Page 22: Shutdown
Operation Procedure: 9. If temporarily interrupting spraying, rotate trigger 1. Put on one of the high-pressure spray nozzles safety latch downward to the locked position to (always relieve system pressure first and follow guard against accidental trigger release instructions for attaching a nozzle). Spray Gun Safety Lock 2. -
Page 23: Storage
Storage When you are finished using the pressure washer, you 1. Drain the water from the high pressure hose and must prepare the sprayer for storage and store it in a spray gun by depressing the trigger on the spray proper location. -
Page 24: Prepare Engine For Long Term Storage
Storage Prepare Engine for Long Term Storage d. Shut off engine. 2. Lubricate cylinder and piston: First prepare the engine for long term storage if you a. Disconnect spark plug wire and remove spark will not be using the pressure washer for more than plug. -
Page 25: Maintenance & Repair
Maintenance & Repair WARNING Maintenance Hazards ALWAYS shut off water supply, bleed water pressure, turn off engine, and disconnect the spark plug wire before cleaning, adjusting, or servicing the pressure washer. After servicing, make sure all guards and cover shields are replaced before using. -
Page 26: Clean Inlet Filter
Maintenance & Repair WARNING High Pressure Fluid Injection Hazardd 3) Remove filter screen. High pressure fluid discharge from leaks (even pin-sized) or ruptured components can pierce 4) Run water through filter screen to clean. skin and inject fluid into the body. Injection injury 5) Reassemble. -
Page 27: Change Pump Oil
Maintenance & Repair Perform Engine Maintenance NOTE TO COMMERCIAL USERS: -As specified in the Engine Owner's manual. All mechanical equipment, no matter how well designed, Engine maintenance items include: will need maintenance and repairs. A NorthStar 1. Changing oil and oil filter pressure washer is no exception. -
Page 28: Troubleshooting
Troubleshooting This section provides a list of the more frequently encountered pressure washer malfunctions, their causes, and corrective actions. Some corrective actions can be performed by the operator or maintenance personnel, and others may require assistance of a qualified Service Center. ENGINE WILL NOT START Causes Solutions... -
Page 29: Parts Explosion- Model #157121,157122,157123,157124,157127,157130
Parts Explosion- Model #157121,157122,157123,157124,157127,157130 *157127 SHOWN... -
Page 30: Parts List - Model #157121,157122,157123,157124,157127, 157130
Parts List - Model #157121,157122,157123,157124,157127, 157130 REF# PART# DESCRIPTION MODEL# 35198 GROMMET,7/16 ID-14GA-16A 801578 HANDLE TUBE WITH RIV NUT 799957 BILLBOARD 800401 DECAL, BILLBOARD 799956 BUMPER TUBE 800402 10" FLAT FREE WHEEL 305200 WHEEL RETAINER 777914 HOSE QUICK COUPLER 777915... -
Page 31: Parts Explosion - Model #157132, 157133
157132, 157133 Parts Explosion - Model # Fig06756 *157132 SHOWN... -
Page 32: Parts List - Model #157132, 157133
Parts List - Model #157132, 157133 REF# PART# DESCRIPTION MODEL# 35198 GROMMET,7/16 ID-14GA-16A 157132, 157133 801579 HANDLE-TUBE WITH RIV NUT-AL 157132, 157133 800401 DECAL, BILLBOARD 157132, 157133 799957 BILLBOARD- CWPW 157132, 157133 799954 4 MM-AL-BASE-CWPW 157132, 157133 800402 10" FLAT FREE WHEEL 157132, 157133 305200 WHEEL RETAINER... -
Page 33: Pump Assemblies - Comet Dwd, Cat4Dnx, Cat4Spx
Pump Assemblies - COMET DWD, CAT4DNX, CAT4SPX 4DNX 157121, 157122 157123, 157132 4SPX 157124 FIG06790 Ref# Part# Description Model# 157121,157122,157123, 777915 3/8" QC x 3/8" FNPT 157124, 157132 800985 3/8” INLET FILTER 157123,157124,157132 800429 GARDEN HOSE ADAPTER 157121, 157122 777340 ¼”... -
Page 34: Pump Assembly - Cat 66Dx
Pump Assembly – Cat 66DX Fig06793 157127, 157133 Ref# Part# Description Model# 777915 3/8" QC x 3/8" FNPT 800986 INLET FILTER, 1/2” NPT 777340 ¼” NPT X ¼” HOSE BARB FITTING 777834 ¼” HOSE CLAMP ¼” PVC BRAIDED HOSE (SOLD BY 777165 1.17 ft. -
Page 35: Pump Assembly - General Pump Me11511G8
Pump Assembly – General Pump ME11511G8 157130 Ref# Part# Description Model# 2296 3/8” STEEL HEX NIPPLE 788419 UNLOADER, VALVE, VRT3 777839 1/2" NIPPLE X 3/8” MPT 777119 3/4” HOSE CLAMP 2264 1/2" BLACK HOSE (SOLD BY FOOT) 1ft. 777915 3/8" QC x 3/8" FNPT 157130 800986 INLET FILTER, 1/2”... -
Page 36: Pump Exploded View - Comet Dwd
Pump Exploded View – Comet DWD... -
Page 37: Pump Parts List - Comet Dwd
Pump Parts List – Comet DWD Ref# DESCRIPTION Ref# DESCRIPTION Not Available PUMP CRANKCASE Not Available PUMP MANIFOLD CO0438014900 BEARING CO3202001800 CO3019001200 OUTER SEEGER CO3609033800 SCREW CO0009032700 AXIAL RING CO3609027100 SCREW CO1210035700 O-RING CO3202001800 CO0402055300 SIDE COVER CO3202046700 CO3020004600 INNER SEEGER CO3202001800 SCREW Not Available... -
Page 38: Pump Exploded View - Cat 4Dnx
Pump Exploded View – Cat 4DNX Ref# DESCRIPTION Ref# DESCRIPTION CA549360 SCREW CA46233 RETAINER, SEAL CA547153 BEARING COVER CA49816 SEAL CA14041 O-RING, BEARING COVER Not Available SEAL CASE CA55337 OIL SEAL CA13976 O-RING FOR SEAL CASE CA14488 INNER BALL BEARING CA49824 SEAL CA547048... -
Page 39: Pump Exploded View Continued - Cat 4Dnx
Pump Exploded View Continued – Cat 4DNX Ref# DESCRIPTION Ref# DESCRIPTION CA547798 ADJUSTING CAP CA46254 SEAT, CHECK VALVE CA45070 LOCK NUT CA13963 O-RING, CHECK VALVE SEAT CA32094 PRESSURE SPRING CA49765 VALVE, CHECK CA549352 SPRING RETAINER CA45924 SPRING CA45694 PISTON STEM CA26133 O-RING, BODY CA20184... -
Page 40: Pump Exploded View - Cat 4Spx
Pump Exploded View – Cat 4SPX... -
Page 41: Pump Parts List - Cat 4Spx
Pump Parts List – Cat 4SPX Ref# DESCRIPTION Ref# DESCRIPTION Not Available SCREW Not Available SCREW CA547084 BEARING COVER CA31643 ADAPTER MOUNT ASSEMBLY CA14041 O-RING, BEARING COVER CA547797 HANDLE, ADJUSTING CA125351 OIL SEAL CA547798 ADJUSTING CAP Not Available INNER BALL BEARING CA548671 LOCK NUT CA547020... -
Page 42: Pump Exploded View - Cat 66Dnx
Pump Exploded View – Cat 66DNX Ref# DESCRIPTION Ref# DESCRIPTION Not Available SCREW CA46730 WASHER Not Available BEARING COVER CA48201 RETAINER, PLUNGER CA14028 O-RING, BEARING COVER CA48755 RETAINER, SEAL CA125351 OIL SEAL CA45188 SEAL CA14037 O-RING, BEARING COVER CA48759 SEAL CASE CA146421 INNER BALL BEARING CA13980... -
Page 43: Pump Exploded View Continued - Cat 66Dnx
Pump Exploded View Continued – Cat 66DNX Ref# DESCRIPTION Ref# DESCRIPTION CA49100 HANDLE, ADJUSTING CA49121 WASHER, SEAL (3/8”) (BLACK) Not Available CAP, ADJUSTING CA49245 VALVE, CHECK W/NBR O-RING CA125521 NUT, LOCKING (M25X1) CA117275 SPRING, CHECK VALVE CA88953 SCREW, SET (M4X4) CA26133 O-RING, BODY –... -
Page 44: Pump Exploded View - General Pump Me11511G8
Pump Exploded View – General Pump ME11511G8... -
Page 45: Pump Parts List - General Pump Me11511G8
Pump Parts List – General Pump ME11511G8 Ref# DESCRIPTION Ref# DESCRIPTION GP81210670 Bottom Ring, Ø15 Not Available Manifold Ø 15 GP96738000 Washer Ø17.5x23x1.5 GP36202551 Inlet Valve Guide GP98210050 Plug, G3/8”x13 GP94737600 Inlet Spring, Ø9.4x14.8 GP96751400 Washer, Ø21.5x27x1.5 GP36200176 Spherical Inlet Valve GP98218700 Plug, G1/2”x10 GP90384100... -
Page 46: Limited Warranty
O-rings and pistons. 90 days / 2 years 157121 GC Engine The engine warranty is covered under the terms and conditions as outlined by from date of purchase... -
Page 47: Limited Warranty Continued
Limited Warranty Continued The engine warranty is covered under the terms and conditions as outlined by the engine manufactures warranty contained herein and is the sole responsibility of the engine manufacture. Normal engine maintenance such as spark plugs, air filters, adjustments, fuel system cleaning and obstruction due to build up is not covered by this NorthStar warranty. -
Page 48: California Proposition 65 Information
CALIFORNIA PROPOSITION 65 INFORMATION WARNING: This product can expose you to chemicals including gasoline engine exhaust, which is known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm.