Stanley FATMAX SXPW3425 User manual

Part No. 7109534 Rev. 0 MAR 2017
PREMIUM PRESSURE WASHER
INSTRUCTION
MANUAL
MODEL
SXPW3425
If your pressure washer is not working properly or if there are parts missing or broken,
please DO NOT RETURN IT TO THE PLACE OF PURCHASE. Contact our Customer Service
Department at 1-877-362-4271
IMPORTANT: Please make certain that the person who is to use this equipment carefully
reads and understands these instructions before operating.
SAVE THIS MANUAL FOR FUTURE REFERENCE

2- ENG
SAFETY GUIDELINES - DEFINITIONS
This manual contains information that is important for you to know and understand.
This information relates to protecting YOUR SAFETY and PREVENTING EQUIPMENT
PROBLEMS. To help you recognize this information, we use the symbols below. Please
read the manual and pay attention to thesesymbols.
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.
NOTICE: Indicates a practice not related to personal injury which, if not
avoided, may result in propertydamage.
IMPORTANT SAFETY INSTRUCTIONS
DANGER: Carbon Monoxide. Using an engine indoors can kill you
in minutes. Engine exhaust contains high levels of carbon monoxide
(CO), a poisonous gas you cannot see or smell. You may be breathing
CO even if you do not smell engine exhaust.
•NEVER use an engine inside homes, garages, crawlspaces or other partly enclosed
areas. Deadly levels of carbon monoxide can build up in these areas. Using a fan or
opening windows and doors does NOT supply enough freshair.
•ONLY use outdoors and far away from open windows, doors and vents. These
openings can pull in engineexhaust.
• Even when the engine is used correctly, CO may leak into your home. ALWAYS use
a battery-powered or battery backup CO alarm in your house. Read and follow
all directions for CO alarm before using. If you feel sick, dizzy or weak
at anytime, move to fresh air immediately. See a doctor. You could have carbon
monoxidepoisoning.
WARNING: Do not operate this unit until you read this instruction manual and
the engine instruction manual for safety, operation and maintenance instructions. If
you have any questions regarding the product, please contact our
customer service department at 1-877-362-4271.
DANGER: Risk of injection or severe injury. Keep clear of nozzle. Do
not direct discharge stream at persons or live animals. This product is
to be used only by trainedoperators.
WARNING: This product and its exhaust contain chemicals known to the State of
California to cause cancer, birth defects or other reproductive harm. In addition, some
cleaning products and dust contain chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm. Wash hands afterhandling.

3- ENG
WARNING: This product may not be equipped with a spark-arresting muffler. If
the product is not equipped and will be used around flammable materials or on land
covered with materials such as agricultural crops, forest, brush, grass or other similar
items, then an approved spark arrester must be installed and is legally required in the
state of California. It is a violation of California statutes section 130050 and/or sections
4442 and 4443 of the California Public Resources Code, unless the engine is equipped
with a spark arrester, as defined in section 4442, and maintained in effective working
order. Spark arresters are also required on some U.S. Forest Service land and may also
be legally required under other statutes andordinances.
SAVE THESE INSTRUCTIONS
DANGER: RISK OF EXPLOSION OR FIRE
WHAT CAN HAPPEN HOW TO PREVENT IT
• Spilled gasoline and it’s vapors can
become ignited from cigarette sparks,
electrical arcing, exhaust gases and hot
engine components such as themuffler.
• Shut off engine and allow it to cool before
adding fuel to thetank.
• Use care in filling tank to avoid spilling fuel.
Move pressure washer away from fueling
area before startingengine.
• Heat will expand fuel in the tank which
could result in spillage and possible
fireexplosion.
• Keep maximum fuel level 1/2" (12.7mm)
below bottom of filler neck to allow
forexpansion.
• Operating the pressure washer in an
explosive environment could result in
afire.
• Operate and fuel equipment in well-ventilat-
ed areas free from obstructions. Equip
areas with fire extinguisher suitable for gas-
olinefires.
• Materials placed against or near the
pressure washer can interfere with
its proper ventilation features causing
overheating and possible ignition of
thematerials.
• Never operate pressure washer in an area
containing dry brush orweeds.
• Muffler exhaust heat can damage
painted surfaces, melt any material
sensitive to heat (such as siding, plastic,
rubber, vinyl or the pressure hose,
itself), and damage liveplants.
• Always keep pressure washer a minimum
of 4' (1.2 m) away from surfaces (such as
houses, automobiles or live plants) that could
be damaged from muffler exhaustheat.
• Improperly stored fuel could lead to
accidental ignition. Fuel improperly
secured could get into the hands of
children or other unqualifiedpersons.
• Store fuel in an OSHA approved container,
in a secure location away from workarea.
• Use of acids, toxic or corrosive
chemicals, poisons, insecticides, or
any kind of flammable solvent with this
product could result in serious injury
ordeath.
• Do not spray flammableliquids.

4- ENG
DANGER: RISK TO BREATHING (ASPHYXIATION)
WHAT CAN HAPPEN HOW TO PREVENT IT
• Breathing exhaust fumes will cause
serious injury or death! Engine exhaust
contains carbon monoxide, an odorless
and deadlygas.
• Operate pressure washer in a well-
ventilated area. Avoid enclosed areas such
as garages, basements,etc.
• Never operate unit in or near a location
occupied by humans oranimals.
• Some cleaning fluids contain substanc-
es which could cause injury to skin,
eyes orlungs.
• Use only cleaning fluids specifically recom-
mended for high pressure washers. Follow
manufacturers recommendations. Do not
use chlorine bleach or any other corrosive
compound.
DANGER: RISK OF FLUID INJECTION AND LACERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Your pressure washer operates at fluid
pressures and velocities high enough
to penetrate human and animal flesh
which could result in amputation or
other serious injury. Leaks caused by
loose fittings or worn or damaged
hoses can result in injection injuries.
DO NOT TREAT FLUID INJECTION
AS A SIMPLE CUT! See a physician
immediately!
• Inspect the high pressure hose regularly.
Replace the hose immediately if it is
damaged, worn, has melted from contacting
the engine, or shows any signs of cracks,
bubbles, pinholes, or other leakage. Never
grasp a high pressure hose that is leaking
ordamaged.
• Never touch, grasp or attempt to cover a
pinhole or similar water leak on the high
pressure hose. The stream of water IS under
high pressure and WILL penetrateskin.
• Never place hands in front ofnozzle.
• Direct spray away from self andothers.
• Make sure hose and fittings are tightened
and in good condition. Never hold onto the
hose or fittings duringoperation.
• Do not allow hose to contactmuffler.
• Never attach or remove wand or hose
fittings while system ispressurized.
• When using replacement lances or guns
with this pressure washer, DO NOT use a
lance and/or lance/gun combination that
is shorter in length than what was provided
with this pressure washer as measured
from the nozzle end of the lance to the
guntrigger.
• Injuries can result if system pressure
is not reduced before attempting
maintenance ordisassembly.
• To relieve system pressure, shut off engine,
turn off water supply and pull gun trigger
until water stopsflowing.
• Use only accessories rated equal to or higher
than the rating of the pressurewasher.

5- ENG
DANGER: RISK OF INJURY FROM SPRAY
WHAT CAN HAPPEN HOW TO PREVENT IT
• High-velocity fluid spray can cause
objects to break, projecting particles at
highspeed.
• Always wear ANSI-approved Z87.1 safety
glasses. Wear protective clothing to protect
against accidentalspraying.
• Never point wand at or spray people
oranimals.
• Light or unsecured objects can become
hazardousprojectiles.
• Always secure trigger lock when wand is not
in service to prevent accidentaloperation.
• Never permanently secure trigger in pull-
back (open)position.
DANGER: RISK OF UNSAFE OPERATION
WHAT CAN HAPPEN HOW TO PREVENT IT
• Unsafe operation of your pressure
washer could lead to serious injury or
death to you orothers.
• Do not use chlorine bleach or any other
corrosivecompound.
• Become familiar with the operation and
controls of the pressurewasher.
• Keep operating area clear of all persons,
pets andobstacles.
• Do not operate the product when fatigued
or under the influence of alcohol or drugs.
Stay alert at alltimes.
• Never compromise the safety features of
thisproduct.
• Do not operate machine with missing,
broken or unauthorizedparts.
• Never leave wand unattended while unit
isrunning.
• If proper starting procedure is not
followed, engine can kickback causing
serious hand and arminjury.
• If engine does not start after two pulls,
squeeze trigger of gun to relieve pump
pressure. Pull starter cord slowly until
resistance is felt. Then pull cord rapidly
to avoid kickback and prevent hand or
arminjury.
• The spray gun/wand is a powerful
cleaning tool that could look like a toy to
achild.
• Keep children away from the pressure
washer at alltimes.
• Reactive force of spray will cause gun/
wand to kickback, and could cause the
operator to slip or fall or misdirect the
spray. Improper control of gun/wand
can result in injuries to self and others.
• Do not overreach or stand on an unstable
support.
• Do not use pressure washer while standing
on a ladder.
• Grip gun/wand firmly with both hands.
Expect the gun to kickback whentriggered.

6- ENG
DANGER: RISK OF INJURY OR PROPERTY DAMAGE WHEN
TRANSPORTING OR STORING
WHAT CAN HAPPEN HOW TO PREVENT IT
• Fuel or oil can leak or spill and
could result in fire or breathing hazard.
Serious injury or death can result. Fuel
or oil leaks will damage carpet, paint
or other surfaces in vehicles ortrailers.
• Oil could fill the cylinder and damage
the engine if the unit is not stored or
transported in an upright position.
• If pressure washer is equipped with a fuel
shut-off valve, turn the valve to the OFF
position before transporting to avoid fuel
leaks. If pressure washer is not equipped
with a fuel shut-off valve, drain the fuel from
tank before transporting. Only transport fuel
in an OSHA-approved container.
Always place pressure washer on a
protective mat when transporting to protect
against damage to vehicle fromleaks.
Always transport and store unit in an
upright position. Remove pressure washer
from vehicle immediately upon arrival at
yourdestination.
DANGER: RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN HOW TO PREVENT IT
• Spray directed at electrical outlets or
switches, or objects connected to an
electrical circuit, could result in a fatal
electricalshock.
• Unplug any electrically operated product
before attempting to clean it. Direct spray
away from electric outlets andswitches.
DANGER: RISK OF CHEMICAL BURN
WHAT CAN HAPPEN HOW TO PREVENT IT
• Use of acids, toxic or corrosive
chemicals, poisons, insecticides, or any
kind of flammable solvent with this
product could result in serious injury
ordeath.
• Do not spray acids, gasoline, kerosene,
or any other flammable materials with this
product. Use only household detergents,
cleaners and degreasers recommended for
use with pressurewashers.
• Wear protective clothing to protect eyes
and skin from contact with sprayedmaterials.

7- ENG
WARNING: RISK OF BURSTING
WHAT CAN HAPPEN HOW TO PREVENT IT
• Over inflation of tires could result in
serious injury and property damage.
• Use a tire pressure gauge to check the tires
pressure before each use and while inflating
tires; see the tire sidewall for the correct tire
pressure.
NOTE: Air tanks, compressors and similar
equipment used to inflate tires can fill small
tires similar to these very rapidly. Adjust
pressure regulator on air supply to no more
than the rating of the tire pressure. Add air
in small increments and frequently use the tire
gauge to prevent overinflation.
• High-velocity fluid spray directed at
pneumatic tire sidewalls (such as found
on automobiles, trailers and the like)
could damage the sidewall resulting in
serious injury.
• On pressure washers rated above
1600psi (11032kPa) use the widest fan
spray (40º nozzle) and keep the spray a
minimum of 8" (20 cm) from the pneumatic
tire sidewall. Do not aim spray directly at
the joint between the tire and rim.
WARNING: RISK OF HOT SURFACES
WHAT CAN HAPPEN HOW TO PREVENT IT
• Contact with hot surfaces, such as
engine exhaust components, could
result in seriousburn.
• During operation, touch only the control
surfaces of the pressure washer. Keep
children away from the pressure washer
at all times. They may not be able to
recognize the hazards of thisproduct.
WARNING: RISK OF INJURY FROM LIFTING
WHAT CAN HAPPEN HOW TO PREVENT IT
• Serious injury can result from attempting
to lift too heavy anobject.
• The pressure washer is too heavy to be
lifted by one person. Obtain assistance
from others beforelifting.
SAVE THESE INSTRUCTIONS
FOR FUTURE USE

8- ENG
QUICK SETUP GUIDE
DANGER: To reduce the risk of injury, read the pressure washer instruction manual
and the engine instruction manual before operating pressurewasher.
AInstall the
Handle
Place handle
onto frame, depress the
snap buttons, and slide
the handle assembly
onto the frame until snap
buttons snap intoplace.
BAdd/Check Oil
The engine is
shipped without
oil. Before starting engine,
add the oil. Check
oil level prior to each
use. Refer to Engine
Owner’s Manual for
completeprocedure.
CAdd Gasoline
In a well ventilated
outdoor area
add fresh, high quality,
unleaded gasoline with
a pump octane rating
of 86 or higher. Do not
overfill. Wipe up spilled
fuel before starting the
engine. Refer to Engine
Owner’s Manual for
completeprocedure.
IMPORTANT: Ethanol ShieldTM (sold separately) is a fuel stabilizer that helps eliminate
and prevent ethanol related problems in power equipment. Follow the instructions on the
container and add to the gasoline.
Wheel Installation
Slide the axle pin through the wheel and flat washer. Slide the axle pin through the hole
in the frame Slide clip through hole in axle pin to secure wheel in place. Repeat same
steps for second wheel.
NOTICE: Keep machine level during wheel installation process.
Do not tilt, tip over, or turn upside down to install wheel kit. May
causedamage!

9- ENG
1Connect
Garden Hose
to Pump
Thread the garden hose
to the pumpinlet.
2Connect High
Pressure Hose
to Pump
Thread the high pressure
hose to the pumpoutlet.
3Connect High
Pressure Hose
to Spray Gun
Thread the other end of
the high pressure hose
to the spraygun.
4Connect Spray
Wand to Spray
Gun
Thread the spray wand into
the end of the spraygun.
5Connect QC
Nozzles to
Spray Wand
Pull quick connect cou-
pler back and insert
nozzle. Release quick
connect coupler and twist
nozzle to make sure it
is secure incoupler.
6Turn Water
Faucet
Completely On
Do not run the unit
without water supply
connected and turned on.
Use Cold WaterOnly.
QUICK START GUIDE
DANGER:
• Never run engine indoors or in enclosed, poorly ventilated areas. Engine exhaust
contains carbon monoxide, an odorless and deadlygas.
• Risk of fluid injection and laceration. When using the high pressure setting, DO NOT
allow the high pressure spray to come in contact with unprotected skin, eyes or with
any pets or animals. Serious injury willoccur.
WARNING: Do not allow the unit to run for more than two minutes
without the gun trigger being pulled. This could cause overheating and
damage to the pump. When the temperature inside the pump rises too
high, the thermal relief valve will open and release a spray of water from
the pump to lower the internal temperature. The valve will thenclose.

10- ENG
7Release Air
from System
Release all
air from pump and
high pressure hose by
depressing trigger until a
steady stream of water is
present. Approximately
30seconds.
8Verify the Fuel
Switch is in the
ON Position 9Verify the
Engine Switch
is turned to the
ON Position
OFF
ON
10 Move the
Choke to the
CLOSED Position 11 Pull the Recoil
Starter Grip
Pull the recoil starter
grip to start theengine.
12 Move the
Choke to the
OPEN Position
Gradually move the Choke
to the OPEN Position
after enginestarts.
DANGER: This Guide is not a substitute for reading the operator's manual. User must
read and understand operator's manual before using thisproduct.

11- ENG
GET TO KNOW THE PRESSURE WASHER
NOTE: Photographs and line drawings used in this manual are for
reference only and do not represent a specificmodel.
Compare the illustrations with your unit to familiarize yourself with the location of various
controls and adjustments. Save this manual for future reference.
G
B
E
1D
H
K
IJ
C
A
L
BASIC ELEMENTS OF A PRESSURE WASHER (FIG. 1)
A. High Pressure Pump: Increases the pressure of the watersupply.
B. Engine: Drives the high pressure pump. Refer to the Engine Owner’s Manual
for location and operation of enginecontrols.
C. High Pressure Hose: Carries the pressurized water from the pump to the gun
and spray wand.
D. Spray Gun: Connects with spray wand to control water flow rate, direction,
andpressure.
E. Quick-Connect Spray Wand: Allows the user to quickly change out
high pressure nozzles. See How To Use Spray Wand instructions in
Operationsection.
F. Detergent Siphon Hose (not shown): Feeds cleaning agents into the pump
to mix with the water. See
How To Apply Chemicals/Cleaning Solvents
instructions in
Operation section.

12- ENG
G. Handle
H. Frame
I. Pump Outlet
J. Pump Inlet
K. Quick Connect Nozzles
L. Adjustable Pressure Regulator: Use the adjustable pressure regulator
to increase and decrease the pressure. Refer to the Adjustable Pressure
Regulator Adjustmentparagraph.
BASIC ELEMENTS OF AN ENGINE
Refer to the Engine Owner’s Manual for location and operation of enginecontrols.
Choke Control: Opens and closes carburetor chokevalve.
Starter Grip: Pulling starter grip operates recoil starter to crankengine.
Engine Switch: Enables and disables ignitionsystem.
ASSEMBLY INSTRUCTIONS (FIG. 2 – 4)
1. Locate and remove all loose parts from thecarton.
2. Cut four corners of the carton from top to bottom and lay the panelsflat.
3.
Place handle (G) onto frame (H),
G
H
2
Q
2A K
depress the snap buttons, and slide
the handle assembly onto the frame
until snap buttons snap intoplace.
NOTICE: Risk of personal injury. Avoid
placing hands between handle and frame
when assembling to preventpinching.
4. Remove the colored quick-connect
nozzles (K) from the plastic bag and insert them into correct grommet on the nozzle
holder. Nozzles are color coded to match colored nozzles on label (Q).
5. Slide the axle pin through the wheel and flat washer (Figure 3). Slide the axle pin
through the hole in the frame (Figure 3A). Slide clip through hole in axle pin to
secure wheel in place (Figure 3B). Repeat same steps for second wheel.
NOTICE: Keep machine level during wheel installation process. Do
not tilt, tip over, or turn upside down to install wheel kit. May
causedamage!
33A 3B
6. Connect wand (E) to gun (D). Tightensecurely.
7. Attach high pressure hose (C) to gun (D). Tightensecurely.

13- ENG
E
4A
D
C
4
D
NOTE: The pump on this unit is maintenance free and requires no oil. If there is a
problem with the pump, contact our Customer Service Group as soon aspossible.
NOTICE: The engine is shipped without oil. Before starting engine, add the oil provided.
Damage to the engine will occur if the engine is run without oil, this damage will not be
covered underwarranty.
OPERATION
PRESSURE WASHER TERMINOLOGY
PSI: Pounds per Square Inch. The unit of measure for water pressure. Also used for air
pressure, hydraulic pressure, etc.
GPM: Gallons per Minute. The unit of measure for the flow rate of water.
CU: Cleaning Units. GPM multiplied by PSI equalsCU.
Bypass Mode: Allows water to re-circulate within the pump when the gun trigger
is not pulled. This feature allows the operator to release the trigger gun and reposition
themselves without having to turn the engine off in between cleaningactions.
WARNING: Do not allow the unit to run for more than two minutes
without the gun trigger being pulled. This could cause overheating
and damage to the pump. When the temperature inside the pump
rises too high, the thermal relief valve will open and release a spray
of water from the pump to lower the internal temperature. The valve
will thenclose.
Thermal Relief Valve (P, Fig. 5): When the temperature inside the 5
P
pump rises too high, this valve will open and release a gush of water in
an effort to lower the temperature inside the pump. The valve will
thenclose.
Detergent Injection System: Mixes cleaners or cleaning solvents with the water to
improve cleaning effectiveness.
Water Supply: All pressure washers must have a source of water. The minimum
requirements for a water supply are 20 psi and 5 Gallons Per Minute. If your water
source is a well, the garden hose length can only be 30 ft. (9m) max.
WARNING: To reduce the possibility of contamination always
protect against backflow when connected to a potable watersystem.
PRESSURE WASHER OPERATING FEATURES
PRESSURE ADJUSTMENTS
The pressure setting is preset at the factory to achieve optimum pressure and cleaning. If
you need to lower the pressure, it can be accomplished by these methods.
1. Back away from the surface to be cleaned. The further away you are,
the less the pressure will be on the surface to becleaned.

14- ENG
2. Use the adjustable pressure regulator to increase and
decrease the pressure. Refer to the Adjustable Pressure Regulator
Adjustmentparagraph.
NOTICE: DO NOT attempt to increase pump pressure. A higher pressure setting than
the factory set pressure may damagepump.
ADJUSTABLE PRESSURE REGULATOR ADJUSTMENT (FIG. 6, 7)
1. Choose the correct high pressure nozzle (0˚, 15˚ or 40˚) for the job to be performed.
Refer to How To Use SprayWand.
2. The adjustable pressure regulator is shipped in the MAX pressure setting, the MAX
pressure bar is aligned with the arrow (R) on the collar as shown in Figure 6.
Rotating the adjustable pressure regulator (L) counterclockwise until it stops places
it in the MIN pressure setting, the arrow (R) will align with the MIN pressure bar as
shown in Figure 7.
7
R
L
6
R
Adjust the pressure by rotating the
adjustable pressure regulator (L)
clockwise for higher pressure or
counterclockwise for lower pressure,
aligning the arrow with the desired
pressure bar on the adjustable
pressure regulator.
NOTE: To apply chemicals the black low pressure nozzle must be installed and the
adjustable pressure regulator must be in the MAX pressuresetting.
HOW TO USE SPRAY WAND
The nozzles for the spray wand are stored in the nozzle holder on the panel assembly.
Colors on the panel identify nozzle location and spray pattern. Refer to the following chart
to choose the correct nozzle for the job to beperformed.
CHANGING NOZZLES ON SPRAY WAND (FIG. 8)
DANGER: Risk of fluid injection. Do not direct discharge stream
toward persons, unprotected skin, eyes or any pets or animals.
Serious injury willoccur.
WARNING: Flying objects could cause risk of serious injury. Do not
attempt to change nozzles while pressure washer is running. Turn
engine off before changingnozzles.
1. Pull quick-connect coupler (E) back and insert nozzle (K). 8
KE
2. Release quick-connect coupler and twist nozzle to make
sure it is secure incoupler.
WARNING: Flying object could cause risk
of serious injury. Ensure nozzle is completely
inserted in quick-connect socket and quick-connect
collar is fully engaged (forward) before squeezing
guntrigger.

15- ENG
NOZZLE
COLOR
SPRAY
PATTERN
USES SURFACES*
Red
0˚ powerful pinpoint
for spot cleaning
of hard, unpainted
surfaces or for
high reach areas
unpainted metal
or concrete;
DO NOT use on wood
Yellow
15˚ intense cleaning
of unpainted
hard surfaces
grills, driveways, concrete
or brick walkways,
unpainted brick or stucco
White
40˚ cleaning of painted
or delicate surfaces auto/RV, marine, wood, painted brick and stucco,
vinyl, painted siding
Black
low pressure applies cleaning
solutions Low pressure spray is safe on all surfaces.
Always verify compatibility
of cleaning solution
prior touse.
*NOTICE: The high pressure spray from your pressure washer is capable of causing
damage to surfaces such as wood, glass, automobile paint, auto striping and trim,
and delicate objects such as flowers and shrubs. Before spraying, check the item to
be cleaned to assure yourself that it is strong enough to resist damage from the force
of the spray.
HOW TO APPLY CHEMICALS/CLEANING SOLVENTS (FIG. 9)
Applying chemicals or cleaning solvents is a low pressure operation. NOTE: Use only
soaps and chemicals designed for pressure washer use. Do not usebleach.
To Apply Chemicals:
1. Ensure detergent siphon hose (F, Figure 9) is attached to F
9
barbed fitting location near high pressure hose connection
of pump asshown.
2. Place other end of detergent siphon hose with filter on
it into container holding chemical/cleaning solution.
NOTE: For every 7 gallons of water pumped 1 gallon of
chemical/cleaning solution will beused.
3. Install the black low pressure nozzle into the quick connect
fitting of the spray wand and rotate the adjustable pressure regulator (L) to the
MAX pressure setting as shown in Figure 6. See How To Use Spray Wand
paragraph in thissection.
NOTE: To apply chemicals the black low pressure nozzle must be installed and
the adjustable pressure regulator must be in the MAX pressure setting as shown in
Figure 6.
4. After use of chemicals, place detergent siphon hose into container of clean water
and draw clean water through chemical injection system to rinse system thoroughly.
If chemicals remain in the pump it could be damaged. Pumps damaged due to
chemical residue will not be covered underwarranty.

16- ENG
NOTE: Chemicals and soaps will not siphon if the black soap nozzle is not installed on
the spraywand.
STARTING (FIG. 10–13)
WARNING: To reduce the risk of injury, read the pressure washer
instruction manual and the engine instruction manual before starting
pressurewasher.
DANGER: Risk of fluid injection and laceration. When using the
high pressure setting, DO NOT allow the high pressure spray to come
in contact with unprotected skin, eyes, or with any pets or animals.
Serious injury willoccur.
• Your washer operates at fluid pressures and velocities high enough to penetrate human
and animal flesh, which could result in amputation or other serious injury. Leaks caused
by loose fittings or worn or damaged hoses can result in injection injuries. DO NOT
TREAT FLUID INJECTION AS A SIMPLE CUT! See a physician immediately!
DANGER: Carbon Monoxide. Using an engine indoors can kill you
in minutes. Engine exhaust contains high levels of carbon monoxide
(CO), a poisonous gas you cannot see or smell. You may be breathing
CO even if you do not smell engine exhaust.
• Breathing exhaust fumes will cause serious injury or death! Engine exhaust con-
tains carbon monoxide, an odorless and deadlygas.
• Operate pressure washer in a well-ventilated area. Avoid enclosed areas such as
garages, basements,etc.
• Never operate unit in or near a location occupied by humans oranimals.
WARNING: Risk of Fire, Asphyxiation and Burn. Never fill fuel tank
when engine is running or hot. Do not smoke when filling fueltank.
• Never fill fuel tank completely. Fill tank to 1/2" (12.7 mm) below bottom of filler
neck to provide space for fuel expansion. Wipe any fuel spillage from engine and
equipment before startingengine.
• DO NOT let hoses come in contact with very hot engine muffler during or immediately
after use of your pressure washer. Damage to hoses from contact with hot engine
surfaces will NOT be covered bywarranty.
NOTICE: Risk of property damage. Never pull water supply hose to move pressure
washer. This could damage hose and/or pumpinlet.
• DO NOT use hot water, use cold wateronly.
• Never turn water supply off while pressure washer engine is running or damage to
pump willresult.
• DO NOT stop spraying water for more than two minutes at a time. Pump operates in
bypass mode when spray gun trigger is not pressed. If pump is left in bypass mode
for more than two minutes internal components of the pump can bedamaged.
Ifyoudonotunderstand these precautions,please contact ourcustomer servicedepartment.
Prior to starting, refer to your engine manual for proper
startingprocedure.
1. In a well ventilated outdoor area add fresh, high quality, unleaded gasoline with
a pump octane rating of 86 or higher. Do not overfill. Wipe up spilled fuel before
starting the engine. Refer to Engine Owner’s Manual for correctprocedure.
IMPORTANT: Ethanol ShieldTM (sold separately) is a fuel stabilizer that helps eliminate
and prevent ethanol related problems in power equipment. Follow the instructions on the
container and add to the gasoline.

17- ENG
NOTICE: Use of fuels with greater than 10% ethanol are
not approved for use in this product per EPA regulations
and will damage the unit and void thewarranty.
2. Check engine oil level. See Engine Owner’s Manual for correct procedure.
3. Connect the water hose to the water source. Turn the water source on to remove
all air from the hose. When a steady stream of water is present, turn the water
sourceoff.
4. Verify the filter screen (M) is in water inlet of pump. NOTE: Convex side facesout.
5. Connect water source (N) to pump inlet (J). NOTE: Water source must provide a
minimum of 5 gallons per minute at 20 psi.
6. Connect
high pressure hose (C) to pump outlet (I).
I
12
C
11
N
J
M
10
WARNING: To reduce the possibility of contamination always
protect against backflow when connected to a potable watersystem.
7. Choose the correct nozzle for the job to be performed. See How To Use spray
Wand instructions in this section. NOTE: If applying a chemical or cleaning
solution, see How To Apply Chemicals/Cleaning Solvents instructions in
thissection.
8. Turn water source on.
NOTICE: Risk of property damage. Failure to do so could cause damage to thepump.
9. Remove all air from the pump and high pressure hose by depressing trigger until a
steady stream of water is present.
10. Start engine. See Engine Owner’s Manual for correct procedure.
WARNING: Risk of unsafe operation. If engine does not start after
two pulls, squeeze trigger of gun to relieve pump pressure. Pull starter
cord slowly until resistance is felt. Then pull cord rapidly to avoid
kickback and prevent hand or arminjury.
11. Depress trigger on gun to start water flow.
WARNING: Risk of unsafe operation. Stand on a stable surface and
grip gun/spray wand firmly with both hands. Expect the gun to kick
whentriggered.
12. Release trigger to stop waterflow.
WARNING: Do not allow the unit to run for more than two minutes
without the gun trigger being pulled. This could cause overheating
and damage to the pump. When the temperature inside the pump
rises too high, the thermal relief valve will open and release a spray
of water from the pump to lower the internal temperature. The valve
will thenclose.

18- ENG
WARNING: Risk of injury from spray. Always 13
O
engage the trigger lock (O) when gun is not in use.
Failure to do so could cause accidentalspraying.
SHUTTING DOWN
1. After each use, if you have applied chemicals, place
detergent siphon hose into container of clean water and draw
clean water through chemical injection system to rinse system
thoroughly.
NOTICE: Risk of property damage. Failure to do so could cause damage to the pump.
2. Turn engine off. See Engine Owner’s Manual.
NOTICE: Risk of property damage. NEVER turn the water off with the enginerunning.
3. Turn water sourceoff.
4. Pull trigger on spray gun to relieve any water pressure in hose or spraygun.
NOTE: Failure to release system pressure will prevent removal of high pressure
hose from spray gun or pumpconnection.
5. See Storage section in this manual for proper storageprocedures.
MAINTENANCE
WARNING: Risk of burn hazard. When performing maintenance,
you may be exposed to hot surfaces, water pressure or moving parts
that can cause serious injury ordeath.
WARNING: Risk of fire hazard. Always disconnect, spark plug wire,
let the engine cool and release all water pressure before performing
any maintenance or repair. The engine contains flammable fuel. Do
not smoke or work near open flames while performingmaintenance.
To ensure efficient operation and longer life of your pressure washer, a routine
maintenance schedule should be prepared and followed. If the pressure washer is used
in unusual conditions, such as high-temperatures or dusty conditions, more frequent
maintenance checks will berequired.
ENGINE
Consult the Engine Owner’s Manual for the manufacturer's recommendations for
any and all maintenance. NOTE: The engine drain plug is located at the rear of theunit.
PUMP
The pump was filled with oil at the factory. The pump on this unit is maintenance free
and requires no oil to be added or changed. If there is a problem with the pump contact
us at 1-877-362-4271
CONNECTIONS
Connections on pressure washer hoses, gun and spray wand should be cleaned
regularly and lubricated with light oil or lithium grease to prevent leakage and damage
to the o-rings.
NOZZLE CLEANING (FIG. 14)
If the nozzle becomes clogged with foreign materials, such as dirt, excessive pressure
may develop. If the nozzle becomes partially clogged or restricted, the pump pressure
will pulsate. Clean the nozzle immediately using the nozzle kit supplied and the
following instructions:
1. Shut off the pressure washer and turn off the watersupply.

19- ENG
2. Pull trigger on gun handle to relieve any waterpressure.
3. Disconnect the spray wand from thegun.
4. Remove the high pressure nozzle (K) from the spray wand.
14 K
K
N
Remove any obstructions with the nozzle cleaning tool
provided and backflush with cleanwater.
5. Direct water supply (N) into nozzle to backflush loosened
particles for 30seconds.
6. Reassemble the nozzle to the wand.
7. Reconnect spray wand to gun and turn on watersupply.
8. Start pressure washer and place spray wand into high
pressure setting totest.
CLEAN THE WATER INLET FILTER (FIG. 10)
This screen filter should be checked periodically and cleaned if necessary.
1. Remove filter by grasping end and removing it from water inlet of pump.
2. Clean filter by flushing it with water on bothsides.
3. Re-insert filter into water inlet of pump. NOTE: Cone side facesout.
NOTE: Do not operate the pressure washer without filter properly installed.
STORAGE
ENGINE
Consult the Engine Owner’s Manual for manufacturer’s recommendations
forstorage.
TO PREVENT FUEL-RELATED PROBLEMS
1. Add Ethanol ShieldTM fuel stabilizer following the manufacturer’s instructions. When
adding a gasoline stabilizer, fill the fuel tank with fresh gasoline. If only partially
filled, air in the tank will promote fuel deterioration during storage. If you keep a
container of gasoline for refueling, be sure that it contains only freshgasoline.
2. After adding a gasoline stabilizer, run the engine outdoors for 10 minutes to be sure
that treated gasoline has replaced the untreated gasoline in thecarburetor.
3. Turn the fuel valve to the OFFposition.
4. Continue to run the engine until it stops from the lack of fuel in the carburetor fuel
bowl. Running time should be less than 3minutes.
PUMP
The manufacturer recommends using SIMPSON®/ POWERWASHER®Pump Guard
or equivalent when storing the unit for more than 30 days and/or when freezing tem-
peratures are expected. SIMPSON®/ POWERWASHER® Pump Guard is environmen-
tallyfriendly.
NOTE: Using pump guard helps provide proper lubrication to the internal seals of the
pump regardless of temperature or environment.
NOTICE: Risk of property damage. Use only SIMPSON®/ POWERWASHER® Pump
Guard or equivalent. Other products could be corrosive and/or contain alcohol which
may cause pumpdamage.
1. Turn off pressure washer and disconnect hoses frompump.
2. Unscrew bottle valve from Pump Guard bottle and remove seal.
3. Screw bottle valve back ontobottle.

20- ENG
4. Attach bottle to water inlet ofpump.
5. Squeeze bottle to inject contents intopump.
6. With ignition switch off, simultaneously pull starter rope and squeeze bottle. Repeat
until protector fluid exits pump outlet. NOTE: This step may require twopeople.
PRESSURE WASHER
1. Drain all water from high pressure hose and wrap it onto hosewrap.
2. Drain all water from the spray gun and wand by holding spray gun in a vertical
position with nozzle end pointing down and squeezing trigger. Store in gunholder.
3. Wrap up and secure detergent siphon hose so it is protected fromdamage.
ACCESSORIES
DANGER: Risk of fluid injection. When using replacement spray
wands or guns with this pressure washer, DO NOT use a spray wand
and/or spray gun/wand combination that is shorter in length than
what was provided with this pressure washer as measured from the
nozzle end of the wand to the guntrigger.
NOTICE: The use of any other accessory not recommended for use with this tool could
be hazardous. Use only accessories rated equal to or greater than the rating of the
pressurewasher.
SPECIFICATIONS
MODEL SXPW3425
PSI Max* 3400 psi
GPM Max* 2.5 gpm
High Pressure Hose 35 ft. (10.7 m)
Presure of Inlet Water 20–100 psi
Inlet Water cold tap
Soap Consumption Rate 10% max
* Rated Pressure and Rated Water Flow is within manufacturing tolerance of
(+/- 10%).
In a continued commitment to improve quality, the manufacturer reserves the right to
make component changes, design changes, or specification changes when necessary
and withoutnotice.
SERVICE INFORMATION
Do not return this product to your retailer. Please contact our customer service
department at 1-877-362-4271
LIMITED WARRANTY
90 DAY LIMITED WARRANTY ON PRODUCT COMPONENTS EXCLUDING PUMP
STANLEY FATMAX®warrants to the original purchaser that the wheels, gun, hose, wand,
spray nozzle(s) and other components of the STANLEY FATMAX®pressure washer covered
under this warranty are free from defects in material and workmanship for 90 days from the
date ofpurchase.