Delco DCV2420 User manual

Part No. 7106967 Rev. 0 AUG 2013
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 or www.simpsoncleaning.com
Si su lavadora a presión no trabaja correctamente ó encuentra partes rotas o faltantes, por favor
NO LA REGRECE AL LUGAR DONDE LA COMPRO. Contáctese con nuestro Departamento de
Servicio al Cliente llamando al 1-877-362-4271 o www.simpsoncleaning.com
IMPORTANT: Please make certain that the person who is to use this equipment carefully reads
and understands these instructions before operating.
IMPORTANTE: Aségurese por favor de que la persona que vaya a utilizar este equipo lea con
cuidado y comprenda estas instrucciones antes de operar.
VEA EL ESPAÑOL EN LA CONTRAPORTADA. INSTRUCTIVO DE OPERACIÓN,
CENTROS DE SERVICIO Y PÓLIZA DE GARANTÍA. ADVERTENCIA:
LÉASE ESTE INSTRUCTIVO ANTES DE USAR EL PRODUCTO.
Save thiS manual for future reference
conServe eStaS inStruccioneS Para futuraS conSultaS
INSTRUCTION MANUAL
MANUAL DE INSTRUCCIONES
MODEL
MODELO
DCV2420
2.0 GPM
2400 PSI
NOTICE: Do not use E15 or E85 fuel (or fuel containing greater
than 10% ethanol) in this product. It is a violation of federal law
and will damage the unit and void your warranty.
AVISO: No utilice combustibles E15 o E85 (ni combustibles
que contengan más de 10% de etanol) con este producto.
Esto constituye una violación a la ley federal, dañará la unidad y
anulará la garantía.

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 gasoline and it’s vapors can
becomeignitedfromcigarettesparks,
electrical arcing, exhaust gases and
hotengine componentssuchasthe
muffler.
• Shutoffengineandallowittocoolbefore
addingfueltothetank.
• Usecareinfillingtanktoavoidspillingfuel.
Movepressurewasherawayfromfueling
areabeforestartingengine.
• Heatwillexpandfuelinthetankwhich
could result in spillage and possible
fireexplosion.
• Keepmaximumfuellevel1/2"(12.7mm)
below bottom of filler neck to allow for
expansion.
• Operatingthepressurewasherinan
explosiveenvironmentcouldresultin
afire.
• Operate and fuel equipment in well-
ventilated areas free from obstructions.
Equipareaswithfireextinguishersuitable
forgasolinefires.
• Materials placed against or near the
pressure washer can interfere with
itsproperventilationfeaturescausing
overheating and possible ignition of
thematerials.
• Neveroperatepressurewasherinanarea
containingdrybrushorweeds.
• Muffler exhaust heat can damage
painted surfaces, melt any material
sensitive to heat (such as siding,
plastic, rubber, vinyl or the pressure
hose,itself),anddamageliveplants.
• Alwayskeeppressurewasher aminimum
of4'(1.2m)awayfromsurfaces(suchas
houses, automobiles or live plants) that
could be damaged from muffler exhaust
heat.
• Improperly stored fuel could lead to
accidental ignition. Fuel improperly
secured could get into the hands of
childrenorotherunqualifiedpersons.
• StorefuelinanOSHAapprovedcontain-
er, in a secure location away from work
area.
• Use of acids, toxic or corrosive
chemicals, poisons, insecticides, or
any kind of flammable solvent with
this product could result in serious
injuryordeath.
• Donotsprayflammableliquids.

4- ENG
DANGER: RISK TO BREATHING (ASPHYXIATION)
WHAT CAN HAPPEN HOW TO PREVENT IT
• Breathing exhaust fumes will cause
serious injury or death! Engine
exhaust contains carbon monoxide,
anodorlessanddeadlygas.
• Operate pressure washer in a well-
ventilated area. Avoid enclosed areas
suchasgarages,basements,etc.
• Never operate unit in or near a location
occupiedbyhumansoranimals.
• Some cleaning fluids contain
substanceswhichcouldcauseinjury
toskin,eyesorlungs.
• Use only cleaning fluids specifically
recommendedforhighpressurewashers.
Followmanufacturer's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nozzle.
• Directsprayawayfromselfandothers.
• Makesurehoseandfittingsaretightened
and in good condition. Never hold onto
thehoseorfittingsduringoperation.
• Donotallowhosetocontactmuffler.
• Never attach or remove wand or hose
fittingswhilesystemispressurized.
• 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 system pressure, shut off
engine,turnoffwatersupply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 operation of your pressure
washercouldleadtoseriousinjuryor
deathtoyouorothers.
• Donot use chlorinebleachor anyother
corrosivecompound.
• Become familiar with the operation and
controls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featuresof
thisproduct.
• Do not operate machine with missing,
brokenorunauthorized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
cleaningtoolthatcouldlooklikeatoy
toachild.
• Keep children away from the pressure
washeratalltimes.
• Reactiveforceofspraywillcausegun/
wand to kickback, and could cause
theoperatortosliporfallormisdirect
the spray. Improper control of gun/
wandcanresultininjuriestoselfand
others.
• Donotoverreach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.
Serious injury or death can result.
Fuel or oil leaks will damage carpet,
paintorothersurfacesinvehicles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pressurewasherisnotequipped
with a fuel shut-off valve, drain the fuel
fromtankbeforetransporting.Onlytrans-
portfuelinanOSHA-approvedcontainer.
 Always place pressure washer on a
protective mat when transporting to
protect against damage to vehicle from
leaks.
 Always transport and store unit in an
upright position. Remove pressure
washer from vehicle immediately upon
arrivalatyourdestination.
DANGER: RISK OF ELECTRICAL SHOCK
WHAT CAN HAPPEN HOW TO PREVENT IT
• Spray directed at electrical outlets or
switches,orobjectsconnectedtoan
electricalcircuit,couldresultinafatal
electricalshock.
• Unpluganyelectricallyoperatedproduct
beforeattemptingtocleanit.Directspray
awayfromelectricoutletsandswitches.
DANGER: RISK OF CHEMICAL BURN
WHAT CAN HAPPEN HOW TO PREVENT IT
• Use of acids, toxic or corrosive
chemicals, poisons, insecticides, or
anykindofflammablesolventwiththis
productcouldresultinseriousinjuryor
death.
• Do not spray acids, gasoline, kerosene,
oranyotherflammablematerialswiththis
product.Useonlyhouseholddetergents,
cleaners and degreasers recommended
forusewithpressurewashers.
• Wear protective clothing to protect
eyes and skin from contact 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
• Contact with hot surfaces, such as
engine exhaust components, could
resultinseriousburn.
• During operation, touch only the control
surfaces of the pressure washer. Keep
childrenawayfrom the pressure washer
at all times. They may not be able to
recognizethehazards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
WARNING: To reduce the risk of injury, read the pressure washer instruction
manual and the engine instruction manual before operating pressure washer.
BInstall the Handle
Place handle onto
frame, depress the snap
buttons, and slide the handle
assembly onto the frame until
snap buttons snap into place.
cAdd/Check Oil
The engine is shipped without
oil. Before starting engine, add
the oil provided. Check oil level prior
to each use. Refer to Engine Owner’s
Manual for complete procedure.
DAdd 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.
aInstall the Wheels
Slide the axle pin through the
wheel, formed washer, frame and
other formed washer. Slide clip
through hole in axle pin to secure wheel
in place. Repeat steps for second wheel.
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.

9- ENG
1Connect Garden
Hose to Pump
Thread the
garden hose to
the pump inlet.
See Label #1 on the
front of the unit.
2
Connect High
Pressure Hose
to Pump
Thread the high pressure
hose to the pump outlet.
See Label #2 on the
front of the unit.
3
Connect High
Pressure Hose
to Spray Gun
Thread the other end
of the high pressure
hose to the spray gun.
4
Connect Spray
Wand to Spray
Gun
Thread the spray
wand into the end
of the spray gun.
5
Connect QC
Nozzles to Spray
Wand
Pull quick connect
coupler back and insert
nozzle. Release quick
connect coupler and
twist nozzle to make sure
it is secure in coupler.
6
Turn Water
Faucet
Completely On
Do not run the unit
without water supply
connected and turned
on. Use Cold Water Only.
7
Release 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
Valve is turned
to the OPEN
Position
The Fuel Valve has been
preset by the factory to
be in the OPEN position.
See Label #8 on the
side of the engine.
9
Verify the Choke
Pin is Pushed In
to the CLOSED
Position
The Choke Pin has
been preset by the
factory to be in the
CLOSED Position.
See Label #9 on the
front of the unit.

10- ENG
10
Pull the Recoil
Starter Grip
Pull the
recoil starter grip to
start the engine.
See Label #10 on the
side of the engine.
11
Pull the Choke
Pin out to the
OPEN Position
Gradually move the
Choke Pin to the
OPEN Position after
engine starts.
See Label #11 on the
side of the engine.
WARNING: 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
1
D
H
A
K
IJ
C
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.

12- ENG
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.
G. Handle
H. Frame
I. Pump Outlet
J. Pump Inlet
K. Quick Connect Nozzles
L. Hose Storage Strap
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. 2–6)
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. Slide the axle pin through the wheel, formed washer, frame and other formed
washer as shown in figure 2. Slide clip through hole in axle pin to secure wheel
in place. Repeat steps for second wheel.
2
4. Place handle (G) onto frame (H), 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.
5. 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).
G
H
3
Q
4K

13- ENG
6. Connect wand (E) to gun (D). Tighten securely.
7. Attach high pressure hose (C) to gun (D). Tighten securely.
E
6
D
C
5
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 on
1-877-362-4271 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.
NOTICE: Allowing the unit to run for more than two minutes without the gun trig-
ger being pulled could cause overheating and damage to the pump. Do not let the
pressure washer run for more than two minutes in Bypass Mode. Turn off the engine
and relieve the pressure in the gun during these extended situations.
Thermal Relief Valve (P, Fig. 7): When the temperature inside the 7
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 meth-
ods.

14- ENG
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.
2. Change to the 25˚ nozzle. This nozzle delivers a less powerful stream of water
and a wider spray pattern. Refer to How To Use Spray Wand.
NOTICE: DO NOT attempt to increase pump pressure. A higher pressure setting
than the factory set pressure may damage pump.
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.
NOzzLE COLOR SpRAY pATTERN USES SURFACES*
Yellow
15˚ intense cleaning
of unpainted
hard surfaces
grills, driveways, concrete
or brick walkways,
unpainted brick or stucco
Green
25˚ standard cleaning
nozzle for most
applications
yard tools, sidewalks,
lawn furniture, unpainted
siding, stucco, gutters
and eaves, concrete,
brick surfaces
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.

15- ENG
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
F
9
attached to 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 low pressure (black) nozzle into quick connect fitting of spray wand, see
How To Use Spray Wand paragraph in this section.
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.
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exhaustfumes willcauseseriousinjury ordeath!Engineexhaust
contains carbon monoxide, an odorless and deadly gas.
• Operate pressure washer in a well-ventilated area. Avoid enclosed areas
such as garages, basements, etc.
• Neveroperateunitinornearalocation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.

16- ENG
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.
If you do not understand these precautions, please contact our customer service
department at 1-877-362-4271
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.
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.

17- ENG
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: Risk of injury from spray. Always engage the
13
O
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

18- ENG
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.
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: Convex 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.
PUMP
NOTICE: The manufacturer recommends using a pump protector/winterizer when
storing the unit for more than 30 days and/or when freezing temperatures are
expected. FREEZE DAMAGE IS NOT COVERED BY THE WARRANTY.
Pump protector/winterizer is usually available at the store where the pressure
washer was purchased. If a pump protector/winterizer is not available, RV
antifreeze needs to be run through the pump.
NOTE: Using a pump protector/winterizer or RV antifreeze is to provide proper
lubrication to the internal seals of the pump regardless of temperature or
environment.

19- ENG
pRESSURE WASHER (FIG. 15)
1. Drain all water from high pressure 15
C
L
D
hose. Use hose storage strap (L) to
secure high pressure hose (C) for
storage.
2. Drain all water from the spray gun
and wand by holding spray gun (D)
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 DCV2420
PSI Max* 2400 psi
GPM Max* 2.0 gpm
High Pressure Hose 25 ft. (7.6 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

20- ENG
LIMITED WARRANTY
90 DAY LIMITED WARRANTY ON pRODUCT COMpONENTS EXCLUDING pUMp
DELCO®warrants to the original purchaser that the wheels, gun, hose, wand, spray
nozzle(s) and other components of the DELCO®pressure washer covered under this
warranty are free from defects in material and workmanship for 90 days from the date
of purchase.
ONE YEAR LIMITED WARRANTY ON pUMp AND FRAME
DELCO® warrants to the original purchaser that the pump and frame of the DELCO®
pressure washer covered under this warranty is free from manufacturer’s defects in
material and workmanship for one year from the date of purchase. The one year limited
warranty applies to the pump and frame only.
DELCO® will repair or replace, at DELCO®'s option, products or components which
have failed within the above warranty periods. Service will be scheduled according
to the normal work flow and business hours at the service center location, and the
availability of replacement parts. All decisions of DELCO®with regard to this limited
warranty shall be final.
This warranty gives you specific legal rights, and you may also have other rights which
vary from state to state.
ENGINE WARRANTY
The engine warranty is covered under the terms and conditions as outlined by the
engine manufacturer’s warranty contained herein and is sole responsibility of the engine
manufacturer.
RESpONSIBILITY OF ORIGINAL pURCHASER (INITIAL USER):
• ToprocessawarrantyclaimonyourDELCO®pressure washer, report the concern
to 1-877-362-4271 for authorization and direction to the nearest authorized service
center in your area.
• Retainoriginalcashregistersalesreceiptasproofofpurchaseforwarrantywork.
• Usereasonablecareintheoperationandmaintenanceoftheproductasdescribed
in the Owner's Manual(s).
THIS WARRANTY DOES NOT COVER:
• Merchandisesoldasreconditioned,usedasrentalequipment,orfloorordisplay
models.
• Merchandisethathasbecomedamagedorinoperativebecauseofordinarywear,
misuse, cold, heat, rain, excessive humidity, freeze damage, use of improper
chemicals, negligence, accident, failure to operate the product in accordance
with the instructions provided in the Owner's Manual(s) supplied with the product,
improper maintenance, the use of accessories or attachments not recommended
by DELCO®, or unauthorized repair or alterations.
• Repairandtransportationcostsofmerchandisedeterminednottobedefective.
• Transportationcostsforthepurposeofevaluationorrepairofequipment.
• Costsassociatedwithassembly,requiredoil,adjustmentsorotherinstallationand
start-up costs.
• Expendablepartsoraccessoriessuppliedwiththeproductwhichareexpectedto
become inoperative or unusable after a reasonable period of use, including but not
limited to springs, nozzles, o-rings, washers, and similar accessories.
• Merchandise sold by DELCO®which has been manufactured by and identified
as the product of another company, such as gasoline engines. The product
manufacturer’s warranty, if any, will apply.