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Pump is shipped with oil.
- Remove shipping tape from pump oil fill cap. (Cat Pumps)
- Remove shipping plug and install vented fill cap. (Comet Pumps)
- See pump oil cap section of this manual.
Closely inspect all components.
-If you have damaged components: Contact the freight company that
delivered the unit and file a claim.
-If you have missing components: Contact Customer Service at
1-800-270-0810.
Read this manual.
Serious injury or death can result if safety instructions are not followed.
WARNING
Item Numbers: A1573001, A1573011,
A1573021, A157306,
A1575581
Owner’s Manual
Pressure Washer Pump: For high pressure cleaning
machines
Any Questions, Comments, Problems or Parts Orders
Call NorthStar Product Support 1-800-270-0810
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Hazard Signal Word Definitions
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Table of Contents
Important Safety Instructions………………………..……...
Grounding Instructions……………………………………...
Pump Component Identification…………………………….
Operation Instructions………………………………..……..
Water Supply………………………………………..…
Start-Up/Shut-Down Instructions……………………...
Applying Chemicals…………………………………...
Maintenance and Storage……………………………………
Maintenance Mode and Maintenance Schedule……….
Pump Oil Change………………………………………
Winter Storage…………………………………………
Troubleshooting……………………………………………..
Specifications………………………………………………..
Parts Explosions…………………………………………….
Pump Exploded Views……………………………………...
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Important Safety Instructions
WARNING - Risk of Injection or Injury to Persons - Do Not Direct Discharge Stream at Persons. -
Do not use a hose if exterior damage is evident.
- Risk of explosion. - Do not spray flammable liquids. - Do not operate in a flammable
environment.
CAUTION - Gun kicks back. Hold with both hands.
- To reduce the risk of injury, read operating instructions carefully before use.
WARNING - When using this product basic precautions should always be followed, including the following:
1.) Read all the instructions before using the product.
2.) To reduce the risk of injury, close supervision is necessary when the product is used near children. Do
not allow irresponsible use by children. Always stop the product and bleed pressures before leaving
unattended, disconnecting hoses or servicing the pump.
3.) Know how to stop the product and bleed pressures quickly. Be thoroughly familiar with the controls.
4.) Stay alert - watch what you are doing.
5.) Do not operate the product when fatigued or under the influence of alcohol or drugs.
6.) Keep operating area clear of all persons.
7.) Do not overreach or stand on unstable support. Keep good footing and balance at all times. Wear
footwear capable of maintaining a good grip on wet surfaces - Do not place the machine on soft or
unstable ground.
8.) Follow the maintenance instructions specified in all manuals. Do not run machine without sufficient
lubrication or sufficient water to cool the pump.
9.) Wear safety glasses, gloves, face protection and appropriate clothing when operating the machine.
10.) Do not operate this machine with broken or missing parts. - Never alter the manufacturer’s original
design or deactivate any safety device on the machine.
11.) Risk of exposure to dangerous chemicals. Wear protective gloves when handling and cleaning with
chemicals. Follow the chemical manufacturer’s directions. Understand all safety hazards and first aid
for all chemicals being used. Check whether dangerous chemicals have been used and take any
precautions that may have been recommended by the supplier of these chemicals when cleaning filters.
Do not pump highly abrasive fluids or use with incompatible chemicals or solvents.
12.) Know the pressure and temperature limits of your machine. Be sure all high pressure accessories meet
or exceed your machine’s limits. Do not set the pressure relief valve above the machine’s limit.
13.) Do not move this machine by pulling on the hose. Do not use the pump to support other items of
equipment that impose unacceptable loads on the pump. Do not attempt to use this machine as a prop.
14.) To reduce risk of injury, do not secure the spray gun open. Your spray gun is equipped with a built-in
trigger safety latch to guard against accidental trigger release and potentially dangerous high pressure
spray. Rotate the safety latch to the locked position when not spraying.
15.) Do not clean this machine with its own spray. Cleaning should be done with a damp sponge with the
motor OFF.
16.) Always make sure all switches and controls are in the OFF position prior to plugging in the electrical
cord. Do no stand in water while plugging and unplugging electrical cord.
17.) This product is provided with a ground fault circuit interrupter built into the power cord plug. If
replacement of the plug or cord is needed, use only identical replacement parts.
SAVE THESE INSTRUCTIONS
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Grounding Instructions
Your product must be grounded. If your product should malfunction or breakdown, grounding provides a path
of least resistance for electric current to reduce the risk of electrical shock. Your product should be equipped
with a cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into an
appropriate outlet that is properly installed and grounded in accordance with all local codes and ordinances.
DANGER - Improper connection of the equipment - grounding conductor can result in a risk of
electrocution. Check with a qualified electrician or service personnel if you are in doubt as to whether the outlet
is properly grounded. Do not modify the plug on your product - if it will not fit the outlet; have a proper outlet
installed by a qualified electrician. Do not use any type adapter with this product.
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION
Your electric pressure washer should have a ground fault circuit interrupter (GFCI) built into the plug of the
power supply cord. This device provides additional protection from the risk of electric shock. Should
replacement of the plug or cord become necessary, use only identical replacement parts that include GFCI
protection. If your power supply cord does not included a built in (GFCI) ensure the receptacle is protected by
a (GFCI).
Extension Cords
Use only 3-wire extension cords that have 3 prong grounding-type plugs and 3-pole cord connectors that accept
the plug from the product. Use only extension cords that are intended for outdoor use. These extension cords are
identified by a marking “Acceptable for use with outdoor appliances; store indoors while not in use.” Use only
extension cords having an electrical rating not less than the rating of the product. Do not abuse extension cord
and do not yank on any cord to disconnect. Keep cord away from heat and sharp edges. Always disconnect the
extension cord from the receptacle before disconnecting the product from the extension cord.
WARNING - To reduce the risk of electrocution, keep all connections dry and off the ground. Do not touch
plug with wet hands.
SAVE THESE INSTRUCTIONS
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A157306
A1573001
A1573021
A1573011
A1575581
Pump Component Identification
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Operation Instructions
Time to fill a 5 gal. bucket
SHUT-DOWN INSTRUCTIONS
1. Turn motor OFF.
2. Unplug the power cord.
3. Turn water supply OFF.
4. Squeeze trigger to
relieve system pressure.
5. Remove garden hose.
6. Remove pressure hose.
START-UP INSTRUCTIONS
1. Attach garden hose.
2. Attach pressure hose.
3. Attach gun and lance.
4. Turn water supply ON.
5. Squeeze trigger to
purge air from pump.
6. Insert nozzle.
7. Plug in power cord
8. Reset the GFCI button on the cord
9. Start motor.
Skin puncture hazard.
High pressure fluid can inject under skin resulting in serious injury including
amputation. Do not direct spray at people or animals.
-If skin injection happens, seek IMMEDIATE surgical treatment.
-Do not check for leaks with hand. Instead, use a piece of cardboard to check for
leaks.
-Do not use unit if exterior hose damage is evident. Make sure all fittings are tight
before starting. Relieve system pressure before servicing.
-Know how to stop engine and bleed pressures quickly. Be thoroughly familiar with
the controls.
-Make sure accessories meet the unit's temperature and pressure limits.
-Stop engine and bleed pressures before leaving unit unattended.
WARNING
CONNECTING TO MOTOR
See Specifications section for
motor horsepower, shaft size, and
bolt circle information.
Water Supply
1.) Make sure the water supply is clean. Debris can cause excess pump wear and reduce performance.
2.) An insufficient water supply will damage your pump. Make sure the water supply is steady and is 20%
over the rated flow of your pump. Use a stopwatch to time how long it takes to fill a 5-gallon bucket with
your garden hose. The bucket must fill faster than the times listed in the table below.
3.) The water supply garden hose must have an inside diameter of at least 5/8”. If the hose is more than 100 ft.
long, the diameter must be at least 3/4”.
4.) Never use a reservoir tank as a water source. Drawing water out of a tank may cause pump cavitation and
damage to your pump. This pressure washer is designed for a pressurized water source such as a city water
faucet. However, the water source pressure must not exceed 115 psi (8 bar).
Always use a flexible rubber hose for your water supply. Do not use rigid piping.
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Operation Instructions
Risk of exposure to dangerous chemicals.
Serious injury or death can result if chemical manufacturer instructions are not
followed.
-Wear protective gloves when handling and cleaning with chemicals.
-Understand all safety hazards and first aid for all chemicals being used.
-When cleaning filters, check if chemicals have been used and take any
precautions that are recommended by the chemical manufacturer.
-Different chemicals may interact dangerously with each other, always follow
chemical manufacturer directions before switching chemicals.
-Calculate the correct amount of chemical to mix, dispose of excess chemical
per the manufacturer instructions.
-Never spray flammable liquids.
WARNING
Applying Chemicals
1.) Install the black nozzle when applying chemicals onto the cleaning surface.
2.) Start the pressure washer according to the start-up instructions.
3.) Submerge the chemical hose in cleaning solution. (See Pump Component Identification section for chemical
injector location.)
4.) Squeeze the spray gun trigger. The chemical injector will draw the chemical into the water stream.
5.) Apply chemicals evenly onto the cleaning surface. Allow the chemicals to react with the dirt, then clean at
high pressure with high pressure (green or yellow) nozzle.
6.) Never use more chemical than is necessary to clean the surface.
7.) To clean the chemical injector, draw water through the strainer until all the chemical is purged from the
system.