GreenWorks 51142 User manual

1500 PSI / 1.3 GPM
ELECTRIC PRESSURE WASHER
51142
OPERATOR’S MANUAL
TOLL-FREE HELPLINE: 1-888-90WORKS (888.909.6757)
Read all safety rules and instructions carefully before operating this tool.

TABLE OF CONTENTS
Introduction
3
Important Safety Instructions
3-4
Specific Safety Rules
5-6
Symbols
7-8
Electrical
9-10
Know Your Pressure Washer
11
Assembly
12-16
Operation
17-20
Maintenance
21-23
Troubleshooting
24-26
Warranty
2 7
Exploded View
28
Part List
29-30
PRODUCT SPECIFICATIONS
Universal Motor ......................................................................................... 120 V, 60 Hz, 13 Amps
Max. Pounds Per Square Inch Pressure*......................................................................... 1500 psi
Rated Gallons Per Minute*.................................................................................................1.3 gpm
1950 C.U
Maximum Inlet Water Temperature....................................................................................... 104˚F
Unit Weight ....................................................................................................... 15.16 lbs (6.88kg)
2

IMPORTANT SAFETY INSTRUCTIONS
W A R N I N G
Read and understand all instructions. Failure to follow all instructions listed below may result
W A R N I N G
When using this product basic precautions should always be followed, including the following
READ ALL INSTRUCTIONS BEFORE USING THIS PRODUCT
To reduce the risk of injury, close supervision is necessary when a product is
used near children.
Be thoroughly familiar with controls. Know how to stop the product and release
pressure quickly.
Stay alert and exercise control. Watch what you are doing and use common sense.
Do not
operate product when you are tired. Do not rush.
•
medication.
Keep the area of operation clear of all people,particularly small children, and pets.
Don’t overreach or stand on unstable support. Keep proper footing and balance at all
times.
•• 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.
W A R N I N G
Risk of injection or injury –Do not direct discharge stream at people or animals.
GROUND FAULT CIRCUIT INTERRUPTER PROTECTION
This pressure washer is provided with 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.
SERVICING OF A DOUBLE-INSULATED APPLIANCE
In a double-insulated product, two systems of insulation are provided instead of grounding.No
grounding means is provided on a double-insulated product, nor should a means for grounding
be added to the product. Servicing a doubleinsulated product requires extreme care and
parts for a double insulated product must be identical to the parts they replace. A doubleinsulated
product is marked with the words “DOUBLE INSULATION” or “DOUBLE INSULATED.”The
symbol may also be marked on the product.

3

IMPORTANT SAFETY INSTRUCTIONS
EXTENSION CORDS
DO NOT USE WITH EXTENSION CORD, USE DIRECT INTO RECEPTACLE.
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 use
damaged extension cords. Examine extension cord before using and replace if damaged. 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.
W A R N I N G
To reduce the risk of electrocution, keep all connections dry and off the ground. Do not touch plug
with wet hands.
SAVE THESE INSTRUCTIONS
4

SPECIFIC SAFETY RULES
Know your product. Read the operator’s manual care-fully. Learn the machine’s
applications and limitations as well as the specific potential hazards related to this product.
To reduce the risk of injury, keep children and visitors away. All visitors should
wear safety glasses and be kept a safe distance from work area.
Use right product. Don’t force product or attachment to do a job it was not designed
for. Don’t use it for a purpose not intended.
Dress properly. Do not wear loose clothing, gloves, neckties, or jewelry. They can get
caught and draw you into moving parts. Rubber gloves and nonskid footwear are recommended
when working outdoors. Also wear protective hair covering to contain long hair.
Do not operate the equipment while barefoot or when wearing sandals or
similar lightweight footwear. Wear protective footwear that will protect your feet and
improve your footing on slippery surfaces.
Exercise caution to avoid slipping or falling.
Always wear eye protection with side shields marked to comply with
ANSI Z87.1. Following this rule will reduce the risk of serious personal injury.
Use only recommended accessories. The use of improper accessories may
cause risk of injury.
Check damaged parts. Before further use of the product, a guard or other part that is
damaged should be carefully checked to determine that it will operate properly and perform its
intended function. Check for alignment of moving parts, binding of moving parts, breakage of
parts, mounting, and any other conditions that may affect its operation. A guard or other part
that is damaged must be properly repaired or replaced by an authorized service center to
avoid risk of personal injury.
Never leave product running unattended. Turn power off. Don’t leave product until
it comes to a complete stop.
Keep the motor free of grass, leaves, or grease to reduce the chance of a fire
hazard.
Follow manufacturer’s recommendations for safe loading, unloading,
transport, and storage of machine.
Keep product dry, clean, and free from oil and grease. Always use a clean cloth
when cleaning. Never use brake fluids, gasoline, petroleum-based products, or any solvents
to clean product.
Check the work area before each use. Remove all objects such as rocks, broken
glass, nails, wire, or string which can be thrown or become entangled in the machine.
Do not use product if switch does not turn it off. Have defective switches
replaced by an authorized service center.
Avoid dangerous environment. Don’t expose to rain. Keep work area well lit.
Do not abuse the cord. Never use the cord to carry the product or to disconnect the
plug from an outlet. Keep cord away from heat, oil, sharp edges, or moving parts. Replace
damaged cords immediately. Damaged cords increase the risk of electric shock.
Ground Fault Circuit Interrupter (GFCI) protection should be provided on the
circuit(s) or outlet(s) to be used for the product. Receptacles are available having built-in
GFCI protection and may be used for this measure of safety.
To reduce the risk of electric shock, this product has a polarized plug (one blade
is wider than the other) and will require the use of a polarized extension cord. The plug
will fit into a polarized extension cord only one way. If the plug does not fit fully into the
extension cord, reverse the plug. If the plug still does not fit, obtain a correct polarized
extension cord. A polarized extension cord will require the use of a polarized wall outlet. This
plug will fit into the polarized wall outlet only one way. If the plug does not fit fully into the wall
outlet, reverse the

5

SPECIFIC SAFETY RULES
plug. If the plug still does not fit, contact a qualified electrician to install the proper wall
outlet. Do not change the equipment plug, extension cord receptacle, or extension cord plug
in any way.
Make sure your extension cord is in good condition. When using an extension cord,
be sure to use one heavy enough to carry the current your product will draw. A wire gauge size
(A.W.G.) of at least 14 is recommended for an extension cord 25 feet or less in length. If in
doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord. An
undersized cord will cause a drop in line voltage resulting in loss of power and overheating.
Inspect extension cords periodically and replace if damaged. Keep handles dry,
clean, and free from oil or grease.
Never direct a water stream toward people or pets, or any electrical device.
Before starting any cleaning operation, close doors and windows. Clear the
area to be cleaned of debris, toys, outdoor furniture, or other objects that could create a
hazard.
Do not use acids, alkalines, solvents, flammable material, bleaches, or
industrial grade solutions in this product. These products can cause physical injuries to
the operator and irreversible damage to the machine.
W A R N I N G
High pressure jets can be dangerous if subject to misuse. The jet must not be directed at
people, animals, electrical devices, or the machine itself.
Keep the motor away from flammables and other hazardous materials.
Check bolts and nuts for looseness before each use. A loose bolt or nut may cause
serious motor problems.
Before storing, allow the motor to cool.
When servicing use only identical replacement parts. Use of any other parts may
create a hazard or cause product damage.
ONLY use cold water.
Make sure minimum clearance of 3 feet is maintained from combustible materials.
Connect pressure washer only to an individual branch circuit.
Hold the handle and wand securely with both hands. Expect the trigger handle to
move when the trigger is pulled due to reaction forces. Failure to do so could cause loss of
control and injury to yourself and others.
Save these instructions. Refer to them frequently and use them to instruct other
users. If you loan someone this product, loan them these instructions also.
W A R N I N G
Some dust created by power sanding, sawing, grinding, drilling, and other construction activities
contains chemicals known to cause cancer, birth defects or other reproductive harm. Some
examples of these chemicals are:
Lead from lead-based paints
Crystalline silica from bricks and cement and other masonry products
Arsenic and chromium from chemically-treated lumber Your risk from these exposures
varies, depending on how often you do this type of work. To reduce your exposure to these
chemicals: work in a well ventilated area, and work with approved safety equipment, such as
those dust masks that are specially designed to filter out microscopic particles
SAVE THESE INSTRUCTIONS
6

SYMBOLS
Some of the following symbols may be usedon this product.Please study them and learn their
meaning. Proper inter-pretation of these symbols will allowyou to operatethe product better and safer.
SYMBOL
NAME
DESIGNATION/EXPLANATION
V
Volts
Voltage
A
Amperes
Current
Hz
Hertz
Frequency (cycles per second)
W
Watt
Power
no
No Load Speed
Rotational speed, at no load
Alternating Current
Type of current
.../min
Per Minute
Revolutions, strokes, surface speed, orbits
etc., per minute
Class II Construction
Double-insulated construction
Safety Alert
Indicates a potential personal injury hazard.
Read Operator’s Manual
To reduce the risk of injury, user must read
and understand operator’s manual before
using this product.
Eye Protection
Always wear eye protection with side shields
marked to comply with ANSI Z87.1.
Wet Conditions Alert
Do not expose to rain or use in damp locations.
Risk of Injection
To reduce the risk of injection or injury, never
direct a water stream towards people or pets or
place any body part in the stream. Leaking
hoses and fittings are also capable of causing
injection injury. Do not hold hoses or fittings.
Kickback
To reduce the risk of injury from kickback, hold
the spray wand securely with both hands
when the machine is on.
Electric Shock
Failure to use in dry conditions and to observe
safe practices can result in electric shock.
7

SYMBOLS
Some of the following symbols may be usedon this product.Please study them and learn their
meaning. Proper inter-pretation of these symbols will allowyou to operatethe product better and safer.
SYMBOL
NAME
DESIGNATION/EXPLANATION
Chemical Burns
To reduce the risk of injury or damage, DO
NOT USE ACIDS, ALKALINES,BLEACHES,
SOLVENTS, FLAMMABLE MATERIAL, OR
INDUSTRIAL GRADE SOLUTIONS in this
product.
The following signal words and meanings are intended to explain the levels of risk associated
with this product.
SYMBOL SIGNAL
MEANING
DANGER
Indicates an imminently hazardous situation, which, if
not avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation, which, if not
avoided, may result in minor or moderate injury.
CAUTION
(Without Safety Alert Symbol) Indicates a situation that
may result in property damage.
SERVICE
Servicing requires extreme care and knowledge and should be performed only by a qualified
service technician. For service we suggest you return the product to your nearest AUTHORIZED
SERVICE CENTER for repair. When servicing, use only identical replacement parts.
W A R N I N G
To avoid serious personal injury, do not attempt to use this product until you read thoroughly and
understand completely the operator’s manual. If you do not understand the warnings and
instructions in the operator’s manual, do not use this product. Call GREENWORKS customer
service for assistance.
W A R N I N G
The operation of any power tool can result in foreign objects being thrown into your eyes,
which can result in severe eye damage. Before beginning power tool operation,
always wear safety goggles or safety glasses with side shields and, when needed, a
full face shield. We recommend Wide Vision Safety Mask for use over eyeglasses or
standard safety glasses with side shields. Always use eye protection which is marked
to comply with ANSI Z87.1.
8

Fig. 1
Pressure washer power cord
ELECTRICAL
W A R N I N G
The double insulated system is intended to protect the user from shock resulting from a break in
the product’s internal insulation. Observe all normal safety precautions to avoid electrical shock.
DOUBLE INSULATED
Double insulation is a concept in safety in electric power tools, which eliminates the need for the
usual three-wire grounded power cord. All exposed metal parts are isolated from the internal
metal motor components with protecting insulation. Double insulated products do not need to be
grounded.
NOTE: Servicing of a product with double insulation requires extreme care and knowledge of the system and
your nearest authorized service center for repair. Always use original factory replacement parts when
servicing.
ELECTRICAL CONNECTION
This product has a precision-built electric motor. It should be connected to a power supply that is
120 volts, 60 Hz, AC only (normal household current). Do not operate this product on direct
current (DC). A substantial voltage drop will cause a loss of power and the motor will overheat. If
the product does not operate when plugged into an outlet,double-check the power supply.
EXTENSION CORDS (See Figure 1.)
When using a power tool at a considerable distance from a power source, be sure to use an
extension cord that has the capacity to handle the current the product will draw. An undersized
cord will cause a drop in line voltage, resulting in overheating and loss of power. Use the chart to
determine the minimum wire size required in an extension cord. Only round jacketed cords listed by
Underwriter’s Laboratories (UL) should be used. When working outdoors with a product, use an
extension cord that is designed for outside use.This type of cord is designated with “WA” or “W” on
the cord’s jacket. Before using any extension cord, inspect it for loose or exposed wires and cut or
worn insulation. It is possible to tie the extension cord and power cord in a knot to prevent
the plug end of the power cord into the receptacle end of the extension cord. This method can
also be used to tie two extension cords together..
9

ELECTRICAL
W A R N I N G
Keep the extension cord clear of the working area. Position the cord so that it will not get caught
on lumber, tools, or other obstructions while you are working with a power tool. Failure to do so
can result in serious personal injury.
W A R N I N G
Check extension cords before each use. If damaged replace immediately. Never use the product
with a damaged cord since touching the damaged area could cause electrical shock resulting in
serious injury.
GROUND FAULT CIRCUIT INTERRUPTER
This unit is equipped with a Ground Fault Circuit Interrupter (GFCI), which guards against the
hazards of ground fault currents. An example of ground fault current is the current that would
, or earth.
GFCI plugs do not protect against short circuits, overloads, or shocks.
**Ampererating(onproductdataplate)
0-2.0 2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0
Cord Length Wire Size (A.W.G.)
25'
16
16
16
16
14 14
50'
16
16
16
14
14 12
100'
16
16
14
12
10 ---
**Used on 12 gauge - 20 amp circuit.
NOTE: AWG = American Wire Gauge
10

2. Gunstoragehook
8. Detergenttank
3. Handleassembly
1.On/Offswitch
9. High pressure
hose
4. Electric cordstorage hook
10.Spraywand
6. Wheels
5. Waterintake
7. Electriccordhook
11. Gun
Fig. 2
KNOW YOUR PRESSURE WASHER
The safe use of this product requires an understanding of the information on the tool and in this
operator’s manual as well as a knowledge of the project you are attempting. Before use of this
product, familiarize yourself with all operating features and safety rules. (See Figure 2.)
DETERGENT TANK
Remove the cap from the detergent tank to add detergent to the pressure washer.
GFCI PLUG
The pressure washer is equipped with a GFCI plug to guard against the hazards of ground fault
currents. This plug does not protect against short circuits, overloads, or shocks.
HIGH PRESSURE HOSE STORAGE
Once the high pressure hose is rolled, hang it on the top of the machine using the hook-and-loop
strap to secure in place.
ON / OFF SWITCH
This switch turns the pressure washer on and off.
TRIGGER HANDLE
The trigger handle has a gripping surface that provides added control of the spray wand and
helps reduce fatigue.
TRIGGER WITH LOCK-OUT
Pulling the trigger releases a stream of water for high pressure cleaning. The lock-out provides
protection against unauthorized use.
UNPACKING
This product requires assembly.
Carefully remove the product and any accessories from the box. Make sure that all
items listed in the packing list are included.
11

PACKINGLIST
PressureWasher
TriggerHandle
WandASSY
Operator’s Manual
Detergent tank
0, 25, 40 degree tips
20 ft. High Pressure Hose
W A R N I N G
If any parts are damaged or missing do not operate this product until the parts are replaced. Use
of this product with damaged or missing parts could result in serious personal injury.
W A R N I N G
Do not attempt to modify this product or create accessories not recommended for use with this
leading to possibleserious personal injury.
W A R N I N G
Do not connect to power supply until assembly is complete.Failure to comply could result in
accidental starting and possible serious personal injury.
ASSEMBLY
W A R N I N G
Do not use this product if any parts on the Packing List are already assembled to your product
when you unpack it. Parts on this list are not assembled to the product by the manufacturer and
require customer installation. Use of a product that may have been improperly assembled could
result in serious personal injury.
UNPACKING
Inspect the product carefully to make sure no breakage or damage occurred during
shipping.
Do not discard the packing material until you have carefully inspected and
satisfactorily operated the product.
If any parts are damaged or missing, please call 1-888-909-6757 for assistance.
12

Fig. 3
ASSEMBLY
CONECTING THE WATER SUPPLY TO THE PRESSURE WASHER (See Figure 3.)
C A U T I O N :
Always observe all local regulations when connnecting hoses to the water main. Some areas
have restrictions against connecting directly to public drinking water supply to prevent the
feedback of chemicals into the drinking water supply. Direct connection through a receiver tank
The water supply must come from a water main. NEVER use hot water or water from
pools, lakes, etc. Before connecting the garden hose:
Before connecting the garden hose to the pressure washer:
Run water hose with motor in OFF position until a steady stream of water
appears to clean any debris from the hose.
Inspect the screen in the water intake.
If the screen is damaged, do not use the machine until the screen has been replaced.
If the screen is dirty, clean it before connecting the garden hose to the machine.
To connect the garden hose to the machine:
Attach the garden hose to the pump inlet coupler.
Straighten the garden hose.
NOTE: There must be a minimum of 10 feet of unrestricted garden hose between the water intake and
the garden hose faucet or shut off valve (such as a “Y” shut off connector).
With the hose faucet turned completely off, attach the garden hose to the water inlet.
Tighten the water inlet collar by hand.
13

ASSEMBLING WAND TO PRESSURE WASHER GUN (See Figure 5.)
Fig. 4
Fig. 5
Fig. 6
ASSEMBLY
USING THE TELESCOPING HANDLE (See Figure 4.)
To use the telescopic handle, pull up on it until the pins click into position.
To store the handle, push the spring pins in, and press down on the handle.
Installing Wand to Pressure Washer Gun
Insert the male baynet end(1) of the wand into the female bayonet outlet(3)firmly .
While pushing in the wand firmly ,turn clockwise(2)until tabs lock into place to
ensure a leak-free connection .
CONNECTING HIGH PRESSURE HOSE TO TRIGGER HANDLE (See Figure 6.)
Connect the high pressure hose to the trigger handle.

14

Fig. 7
Slide
round gun holder
onto bracket
Slide cord
retention clip onto
bracket
Fig. 8
ASSEMBLY
SOAP BOTTLE (See Figure 7.)
free connection.
Fill bottle with approved pressure washer detergents / soaps only.
INSTALLING GUN HOLDER AND CORD RETENTION CLIPS (See Figure 8.)
To Install --Push front
To Remove--Firmly pull up
15

Fig. 9
W A R N I N G
Always use the pressure washer in the position shown, laying down. Never try to use in the
upright position. Danger of tipping over and damage to the motor and/or pump may occur.
W A R N I N G
Always ensure that the garden hose is connected to the unit and that the faucet is turned on,
before the power to the unit is switched on. Pump damage will occur if these steps are not
followed.
ASSEMBLY
CONNECTING THE GARDEN HOSE (See Figure 9.)
C A U T I O N :
Always observe all local regulations when connecting hoses to the water main. Some areas have
restrictions against connecting directly to public drinking water supply to prevent the feedback of
preventer is usually permitted.
The water supply must come from a water main. NEVER use hot water or water from pools,
lakes, etc. Before connecting the garden hose:
Uncoil the garden hose.
Run water hose with motor in OFF position until a steady stream of water appears to
clean any
debris from the hose.
Inspect the screen in the water intake.
If the screen is damaged, do not use the machine until the screen has been replaced.
If the screen is dirty, clean it before connecting the garden hose to the machine.
With the hose faucet turned completely off, attach the end of the garden hose to
the water intake. Tighten by hand. 16

Fig.10
OPERATION
W A R N I N G
Do not allow familiarity with the product to make you careless.Remember that a careless fraction
of a second is sufficient to inflict serious injury.
W A R N I N G
Always wear eye protection with side shields marked to comply with ANSI Z87.1. Failure to do so
could result in objects being thrown into your eyes resulting in possible serious injury.
W A R N I N G
Do not use any attachments or accessories not recommended by the manufacturer of this product.
The use of attachments or accessories not recommended can result in serious personal injury.
W A R N I N G
Never direct a water stream toward people or pets, or any electrical device. Failure to heed this
warning could result in serious injury.
APPLICATIONS
You may use this product for the purposes listed below:
Using spray wand: cleaning cars, boats, motorcycles,outdoor furniture, grills, and house siding
ADDING DETERGENT TO THE PRESSURE WASHER (See Figure 10.)
Use only detergents designed for pressure washers; household detergents, acids, alkalines,
bleaches, solvents, flammable material, or industrial grade solutions can damage the pump.
Many detergents may require mixing prior to use. Prepare cleaning solution as instructed on the
solution bottle.
NOTE: Use a funnel, if needed, to prevent accidental spilling of the detergent outside the tank. If any detergent
is spilled during the filling process, make sure the unit is cleaned and dried before proceeding.
17