PRESSURE WASHER
OWNERS MANUAL
for
Model 2020CWVB
This product is not equipped with a spark arresting muffler. If the product 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 arrestor, 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.
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other
reproductive harm. This warning is given in compliance with California Proposition 65, as detectable amounts
of chemicals subject to proposition 65 may be contained in this product.
D20247 Rev. 2 7/13/00
Read Owner's Manual. Do not operate equipment until you
have read Owners Manual for Safety, Assembly, Operation,
Maintenance and Storage Instructions.
CAUTION
ENGINE OIL MUST BE ADDED TO THE ENGINE BEFORE USE.
TABLE OF CONTENTS
Table of Contents ................................................... 2
Owner's Responsibilities.........................................2
Pressure Washer Return Policy ............................. 2
Safety Guidelines-Definitions .................................. 2
Warranty .................................................................. 3
Safety Rules ............................................................ 4
Contents of Carton ................................................. 6
Unpacking ...............................................................7
OWNER'S RESPONSIBILITIES
Congratulations! You have purchased a high quality
product from America’s leading manufacturer of
pressure washers. This pressure washer, when
properly used and maintained, will provide trouble
free service. Please read and follow these instructions for proper use and maintenance.
• Read and understand all safety warnings.
• Read this Owner’s Manual. Save these instruc-
tions. Owner's manual should remain with unit
at all times.
• Do not operate this unit until you have read this
Owners Manual for Safety, Operation, and
Maintenance Instructions.
• Read the Engine Owner's Manual supplied
with this unit.
Assembly ................................................................ 7
Operation ................................................................ 8
Maintenance ......................................................... 14
Storage ................................................................. 16
Troubleshooting .................................................... 17
Repair Parts .......................................................... 18
Quick Facts .............................................. back page
• Do not operate this unit until you have read the
Engine Owners Manual for Safety, Operation, and
Maintenance Instructions.
• Check for visible shipping damage. Shipping
damage will cause problems in operation of this
unit.
• If you experience any problems and need assistance, please call us at our toll free number
1-800-888-2468, Ext 2, 2. 8:00 a.m. to 8:00 p.m.
E.S.T.
• If you need warranty repair or service part purchase, you can locate an Authorized Warranty
Service Center nearest you by calling us at
1-800-888-2468, Ext 2, 1 24 hours a day, 7 days a
week.
NOTE: Photos and illustrations in this manual are for reference only and may not represent a specific
model.
PRESSURE WASHER RETURN POLICY
➜ Within 15 days of your purchase, Sam's will gladly exchange your pressure washer or refund your money.
Sales receipt is required.
➜ After 15 days manufacturer's warranty applies.
➜ Refer to this Owners Manual for manufacturer's warranty.
➜ If you need warranty repair or service part purchase, you can locate an Authorized Warranty Service Center
nearest you by calling us at 1-800-888-2468, Ext 2, 1 24 hours a day, 7 days a week.
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 sections.
DANGER indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if
not avoided, may result in minor or moderate injury.
WARNING indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
D20247
CAUTION used without the safety alert symbol indicates a
potentially hazardous situation which, if not avoided, may
result in property damage.
2 — ENG
10/2/97
WARRANTY
LIMITED WARRANTY
ONE YEAR FROM DATE OF PURCHASE
All merchandise manufactured by DeVilbiss Air Power Company Manufacturing is warranted to be free of defects in
workmanship and material which occur during the first year from the date of purchase by the original purchaser (initial
user). Products covered under this warranty include: air compressors, *air tools, accessories, service parts, pressure
washers, and generators used in consumer applications (i.e., personal residential household usage only).
Air compressors, *air tools, accessories, service parts, pressure washers, and generators used in commercial
applications (income producing) are covered by a 90 day warranty.
DeVilbiss Air Power Manufacturing will repair or replace, at DeVilbiss’ option, products or components which have failed
within the warranty period. Repair or replacement, and service calls on 60 and 80 gallon air compressors, will be handled
by Authorized Warranty Service Centers and will be scheduled and serviced according to the normal work flow and
business hours at the service center location, and depending on the availability of replacement parts.
All decisions of DeVilbiss Air Power Company Manufacturing with regard to this policy shall be final.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
RESPONSIBILITY OF ORIGINAL PURCHASER (Initial User):
❏ 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 Owners Manual(s).
❏ Deliver or ship the product to the nearest DeVilbiss Air Power Manufacturing Authorized Warranty Service Center.
Freight costs, if any, must be paid by the purchaser.
❏ Air compressors with 60 and 80 gallon tanks only will be inspected at the site of installation. Contact the nearest
Authorized Warranty Service Center, that provides on-site service calls, for service call arrangement.
❏ If the purchaser does not receive satisfactory results from the Authorized Warranty Service Center, the
purchaser should contact DeVilbiss Air Power Company Manufacturing.
THIS WARRANTY DOES NOT COVER:
❏ Merchandise sold as reconditioned, floor models and/or display models. Any damaged or incomplete equipment
sold "as is".
❏ Merchandise used as "rental" equipment.
❏ Merchandise that has become inoperative because of ordinary wear, misuse, freeze damage, use of improper
chemicals, negligence, accident, improper and/or unauthorized repair or alterations including failure to operate
the product in accordance with the instructions provided in the Owners Manual (s) supplied with the product.
*Air Tools: O-Rings and driver blades are considered ordinary wear parts, therefore, they are warranted for a
period of 45 days from the date of purchase.
❏ An air compressor that pumps air more than 50% during a one hour period is considered misuse because the
air compressor is undersized for the required air demand. Maximum compressor pumping time per hour is 30
minutes.
❏ Merchandise sold by DeVilbiss Air Power Manufacturing which has been manufactured by and identified as the
product of another company. The product manufacturer's warranty will apply.
❏ Repair and transportation costs of merchandise determined not to be defective.
❏ Cost associated with assembly, required oil, adjustments or other installation and start-up cost.
❏ ANY INCIDENTAL, INDIRECT OR CONSEQUENTIAL LOSS, DAMAGE, OR EXPENSE THAT MAY RESULT
FROM ANY DEFECT, FAILURE OR MALFUNCTION OF THE PRODUCT. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply
to you.
❏ IMPLIED WARRANTIES, INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, ARE LIMITED TO ONE YEAR FROM THE DATE OF ORIGINAL PURCHASE. Some states do not
allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you.
Form: SP-100-G - 9/29/99
213 Industrial Drive • Jackson, TN 38301-9615
Telephone: 1-800-888-2468 , Ext. 2
FAX: 1-800-888-9036
3 — ENG
D20247
IMPORTANT SAFETY INSTRUCTIONS
IMPROPER OPERATION OR MAINTENANCE OF THIS PRODUCT COULD RESULT IN SERIOUS INJURY AND PROPERTY
DAMAGE. READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING.
HAZARD
DANGER
RISK OF EXPLOSION
OR FIRE
DANGER
RISK TO BREATHING
• Spilled gasoline and it’s vapors can become
ignited from cigarette sparks, electrical
arcing, exhaust gases, and hot engine
components such as the muffler.
• Heat will expand fuel in the tank which could
result in spillage and possible fire explosion.
• Operating the pressure washer in an
explosive environment could result in a fire.
• Materials placed against or near the
pressure washer can interfere with its proper
ventilation features causing overheating and
possible ignition of the materials.
• Muffler exhaust heat can damage painted
surfaces, melt any material sensitive to heat
(such as siding, plastic, rubber, or vinyl), and
damage live plants.
• Improperly stored fuel could lead to
accidental ignition. Fuel improperly secured
could get into the hands of children or other
unqualified persons.
• 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.
• Breathing exhaust fumes will cause serious
injury or death.
HOW TO PREVENT ITWHAT CAN HAPPEN
• 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.
• Keep maximum fuel level ½” below top of
tank to allow for expansion.
• Operate and fuel equipment in well
ventilated areas free from obstructions.
Equip areas with fire extinguishers suitable
for gasoline fires.
• Never operate pressure washer in an area
containing dry brush or weeds.
• Always keep pressure washer a minimum of
four feet away from surfaces (such as
houses, automobiles, or live plants) that
could be damaged from muffler exhaust
heat.
• Store fuel in an OSHA approved container,
in a secure location away from work area.
• Do not spray flammable liquids
• Operate pressure washer in a well ventilated
area. Avoid enclosed areas such as
garages, basements ,etc.
• Never operate unit in a location occupied by
humans or animals.
D20247
WARNING
RISK OF UNSAFE
OPERATION
• Some cleaning fluids contain substances
which could cause injury to skin, eyes, or
lungs.
• Unsafe operation of your pressure washer
could lead to serious injury or death to you
or others.
• The spray gun/wand is a powerful cleaning
tool that could look like a toy to a child.
• Reactive force of spray will cause gun/wand
to move, 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.
4 — ENG
• Use only cleaning fluids specifically
recommended for high pressure washers.
Follow manufacturers recommendations.
• 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 defeat the safety features of this
product.
• Do not operate machine with missing,
broken, or unauthorized parts.
• Never leave wand unattended while unit is
running.
• Keep children away from the pressure
washer at all times.
• Do not overreach or stand on an unstable
support. Grip gun/wand firmly with both
hands. Expect the gun to kick when
triggered.
HAZARD
WARNING
RISK OF
ELECTRICAL
SHOCK
IMPORTANT SAFETY INSTRUCTIONS
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.
WARNING
RISK TO FLUID
INJECTION
WARNING
RISK OF CHEMICAL BURN
WARNING
RISK OF HOT SURFACES
• 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!
• Relieve system pressure before attempting maintenance or disassembly of
equipment.
• 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.
• Contact with hot surfaces, such as
engines exhaust components, could
result in serious burn.
• 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.
• Use only hose and high pressure
accessories rated for pressure higher than
your pressure washer's p.s.i.
• To relieve system pressure, shut off engine,
turn off water supply, and pull gun trigger
until water stops flowing.
• Do not use acids, gasoline, kerosene, or
any other flammable materials in this
product. Use only household detergents,
cleaners and degreasers recommended
for use in pressure washers.
• Wear protective clothing to protect
eyes and skin from contact with sprayed
materials.
• 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.
DANGER
RISK OF INJURY AND
PROPERTY DAMAGE
WHEN
TRANSPORTING OR
STORING
The powerful 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. Avoid the
use of the concentrated spray stream except for very strong surfaces like concrete and steel.
Operating unit with water supply shutoff without flow of water will result in equipment damage. Operating the pressure
washer with water supply shutoff will void your warranty. You should never run this pressure washer for more than 2
minutes without pulling the trigger to allow cool water to enter the pump and the heated (recirculated) water to exit.
• 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.
5 — ENG
• If pressure washer is equipped with a fuel
shut-off valve, turn the valve to the off
position before transporting or storing to
avoid fuel leaks. If pressure washer is not
equipped with a fuel shut-off valve, drain the
fuel from tank before transporting or storing.
Only store fuel in an OSHA approved
container. Always place pressure washer on
a protective mat when transporting to
protect against damage to vehicle from
leaks. Remove pressure washer from vehicle
immediately upon arrival at your destination.
Do not store pressure washer inside buildings occupied by humans or pets.
D20247
CONTENTS OF CARTON
Handle
Bagged Handle
Spray Gun
Engine
Manual
English/
Spanish
Owner's
Manual
Nozzle Cleaning Kit
Bagged Parts
Multi-Reg Wand
Instructional
Video
Handle Knobs
30 Weight
Engine Oil
Engine Frame and
Wheel Assembly
High Pressure Hose
Chemical Hose
D20247
6 — ENG
UNPACKING
1. Open carton.
2. Remove plastic bag containing handle and engine
manual supplied by engine manufacturer.
3. Remove cardboard from top of unit and inner
cardboard from around unit.
4. Remove plastic bag containing two knobs, nozzle
cleaning kit, instructional video, English Owner's
Manual, and Spanish Owner's Manual from
carton.
5. Remove spray gun, multi-reg wand, and bottle of
engine oil from carton.
6. Using box cutting tool, cut the four corners of the
shipping carton from top to bottom, then lay
panels flat. NOTE: Be careful not to cut into
chemical hose and high pressure hose.
7. Insert handle ends into pressure washer frame as
shown.
8. Install two knobs as shown in and tighten securely.
Knobs
9. Grasp handle and roll unit off of carton.
10. Remove high pressure hose from carton and store
in gun/hose holder as shown in Pressure Washer
Basics section in this manual.
ASSEMBLY
ASSEMBLY
1. Connect threaded end of multi-reg wand to spray
gun as shown. Tighten securely.
2. Place assembled spray gun, multi-reg wand, and
chemical hose in gun/hose holder, with multi-reg
wand facing down.
3. Add 30 weight engine oil (supplied) to engine.
Refer to engine manual supplied by engine manufacturer for procedure. Do not overfill. Use of a
funnel is recommended.
NOTE
There will be a slight amount of oil in the
engine from factory testing.
add oil
NOTE
The engine on this pressure washer is
equipped with a low oil sensor. The amount of
oil in the engine must be correct or the engine
will not start.
NOTE
The DAPC pump on your pressure washer is
filled with oil at the factory. There is no need to
add oil at this time, see the Maintenance
section of this manual to perform maintenance
on this pump.
7 — ENG
D20247
OPERATION
NOTE: Become familiar with the controls and features described on these pages before
operating your unit.
Spray Gun
Gun/
Hose
Holder
1/4" X 25 ft. High
Pressure Hose
Detachable
Handle for
Storage
Multi-Reg Wand
Nozzle
DAPC High
Pressure
Pump
Chemical
Hose With
Filter
Throttle
Control
Lever
Choke
Control
Fuel
Filler
Cap
Heavy Duty
Steel Frame
Starter
Grip
6 HP B&S
Engine
Air
Cleaner
SemiPneumatic
Tires
Thermal
Relief
Valve
BASIC ELEMENTS OF A PRESSURE
WASHER
DAPC High Pressure Pump: Increases the pressure
of the water supply to 2000 psi @ 2 gpm.
6 HP Briggs & Stratton Engine: Drives the high
pressure pump.
High Pressure Hose: Carries the pressurized water
from the pump to the gun and wand.
Spray Gun: Connects with multi-reg wand to control
water flow rate, direction, and pressure.
Multi-Reg Wand with nozzle: Has a high and low
pressure setting along with a 25° fan and narrow jet
stream.
D20247
Chemical Hose: Allows cleaners or cleaning solvents
to be mixed with the pressurized water stream. See
How To Siphon Chemicals/Cleaning Solvents in
Operation section of this manual.
Thermal Relief Valve: A safety device that protects
the pump from overheating. When water inside the
pump reaches a specified temperature, the thermal
relief valve opens and discharges the heated water
from the pump.
8 — ENG
OPERATION
BASIC ELEMENTS OF ENGINE
Choke Control: Opens and closes the choke valve in
carburetor.
Throttle Control Lever: Controls engine speed.
Starter Grip: Pulling starter grip operates recoil
starter to crank engine.
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 through the pressure washer.
CU: Cleaning Units. GPM multiplied by PSI.
Bypass Mode: In Bypass Mode, the pump is recircu-
lating water because the trigger of the spray gun is not
pulled.
Chemical Injection: Feeds cleaning agents into the
pump to mix with the pressurized water and help in
cleaning.
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.
NOTE: Any supply pressure or delivery rate less than
this will not allow the pressure washer to operate at its
full potential.
OPERATING FEATURES OF YOUR
PRESSURE WASHER
BYPASS MODE
During normal operation water supply is turned on,
engine is running, spray gun trigger is depressed, and
the cold water supply circulates inside the pressure
washer pump allowing pump to maintain a safe
operating temperature. When you release spray gun
trigger and engine is still running, you are in bypass
mode.
When unit is in bypass mode, water circulating inside
the pump begins to heat up. If unit is left in bypass
mode for more than two (2) minutes, the water temperature will rise to a dangerous level and damage
internal components of the pump.
If pressure washer is operated without an adequate
water supply or operated for more than two (2) minutes without depressing the spray gun trigger, the
pump will overheat and be seriously damaged. Any
damage to pump due to these causes will not be
covered under warranty.
THERMAL RELIEF VALVE
In an effort to prevent damage, pumps are equipped
with a thermal relief valve. This valve will open when
the temperature inside the pump rises too high. This
valve will then release a gush of water in an effort to
lower the temperature inside the pump. Immediately
after this occurs, the valve will close.
DO NOT allow your unit to operate in
bypass mode for more than two minutes at
any time. Overheating of pump will cause
damage to pump.
PRESSURE ADJUSTMENT
The pressure output of the DAPC pump on your
pressure washer is preset at the factory to achieve
optimum pressure and cleaning. It is not adjustable. If
you need to lower the pressure, there are two methods.
The first method is to back away from the surface
being cleaned. The farther away you are, the less
pressure is delivered to the surface being cleaned.
The second method is to reduce the speed of the
gasoline engine (RPM). Slow the engine down and the
water pressure will go down with it.
9 — ENG
DO NOT attempt to increase pump pressure. A higher pressure setting than the
factory set pressure will damage pump.
D20247
OPERATION
RISK OF INJECTION OR INJURY TO
PERSON. DO NOT DIRECT DISCHARGE
STREAM TOWARD PERSONS.
WHEN USING THE HIGH PRESSURE SETTING, DO NOT ALLOW THE JET-LIKE
SPRAY TO COME IN CONTACT WITH
UNPROTECTED SKIN, EYES, OR WITH
ANY PETS OR ANIMALS. SERIOUS INJURY
CAN OCCUR.
HOW TO USE WAND
Your pressure washer is equipped with a multi-reg
wand with both high and low pressure settings. The
high pressure setting is for cleaning and rinsing, the
low pressure setting is for applying chemicals or
cleaning solutions to surfaces.
For high pressure operation, pull back the nozzle of
the multi-reg wand as shown.
Multi-Reg (High Pressure Setting)
For low pressure operation, extend the nozzle of the
multi-reg wand as shown.
Multi-Reg (Low Pressure Setting)
HOW TO SIPHON CHEMICALS/CLEANING
SOLVENTS
Siphoning chemicals or cleaning solvents is a low
pressure operation.
NOTE
Use only soaps and chemicals designed for
pressure washer use. Do not use bleach.
The nozzle at the end of the multi-reg wand can be
rotated to change the high pressure spray pattern
from a narrow jet to a 25O fan shape, as shown.
Markings have been placed on the nozzle to help you
select the spray pattern.
25° fan spray
narrow jet stream
To siphon chemicals:
1. Press chemical hose onto barbed fitting located
near high pressure hose connection of pump as
shown.
Barbed
Fitting
2. Place other end of chemical hose with filter on it
into container holding chemical/cleaning solution.
3. Set multi-reg nozzle to low pressure setting, see
How To Use Wand paragraph in this section.
4. After use of chemical, siphon clean water through
chemical hose to rinse it and pump clean. Chemicals which remain in pump can damage it. Damage to pump due to chemicals will not be covered
under warranty.
NOTE
Chemicals and soap will not siphon when
multi-reg nozzle is in the high pressure
position.
D20247
10 — ENG
OPERATION
BEFORE STARTING
1. Move pressure washer to level ground.
2. Check engine oil level. Refer to engine
manufacturer's manual for procedure.
3. Verify that filter screen is in water inlet of pump, as
shown.
screen
filter
Never pull water supply hose to move
pressure washer. This could damage hose
and/or pump inlet.
4. Attach threaded end of high pressure hose to
spray gun as shown. Tighten securely with an
adjustable wrench.
6. Connect water supply hose to water inlet of pump
as shown.
NOTE
The water supply must provide a minimum
of 5 gallons per minute at 20 PSI.
NOTE
Use cold water only.
Water
Supply
Hose
7. Make sure high pressure hose and water supply
hose are securely connected to pump.
8. If you are applying a chemical or cleaning solution
see How To Siphon Chemicals/Cleaning Sol-
vents in this section.
9. Turn water supply on.
5. Attach other end of high pressure hoseto pump as
shown.
High
Pressure
Hose
Never turn water supply off while pressure
washer engine is running or damage to
pump will result.
10. Add fresh, unleaded regular gasoline to engine fuel
tank.
NEVER FILL FUEL TANK INDOORS. NEVER
FILL FUEL TANK WHEN ENGINE IS RUNNING
OR HOT. DO NOT SMOKE WHEN FILLING
FUEL TANK.
11 — ENG
D20247
OPERATION
NEVER FILL FUEL TANK COMPLETELY. FILL
TANK TO 1/2" BELOW BOTTOM OF FILLER
NECK TO PROVIDE SPACE FOR FUEL EXPANSION. WIPE ANY FUEL SPILLAGE FROM
ENGINE AND EQUIPMENT BEFORE STARTING ENGINE.
TYPICAL HOOK-UP
Your pressure washer hookup should resemble this
diagram.
Pressure Washer
Chemical
Garden
Hose
Chemical
Hose
HiPressure
Hose
PRE-START CHECKLIST
Once you reach this point, ensure you have completed the following:
3
All safety instructions read and understood?
3
All hose connections are tightened and free of
any kinks, damage, or leaks?
3
Correct amount of engine oil and gasoline
added to engine?
3
Water supply (garden hose) turned on?
3
All operation instructions read and understood?
If you can say "yes" to the items in the Pre-start
Checklist, you are ready to start your pressure
washer.
Wand
Choke Control
2. Move throttle control to FAST position.
FAST SLOW STOP
Throttle
Control
3. Pull starter grip slowly until you feel resistance,
then pull briskly. Return starter grip gently.
Starter Grip
STARTING YOUR PRESSURE
WASHER
NOTE: Make sure water supply is turned on.
Never turn water supply off while pressure
washer engine is running or damage to
pump will result.
1. Move choke control to CHOKE position.
NOTE
To restart a warm engine, move choke control
to RUN position.
D20247
If engine does not start after two pulls, pull
the trigger on spray gun to relieve pressure
in hose. Failure to do so may cause damage to starter recoil mechanism of engine
NEVER RUN ENGINE INDOORS OR IN ENCLOSED, POORLY VENTILATED AREAS. ENGINE EXHAUST CONTAINS CARBON MONOXIDE, AN ODORLESS AND DEADLY GAS.
4. When engine starts, gradually move choke lever
from one position to the next until it is in the full
RUN position.
12 — ENG
OPERATION
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 CAN OCCUR.
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.
DO NOT let hoses come in contact with
very hot engine muffler during or immediately after use of your pressure washer.
5. Depress trigger on gun to start water flow. Release
trigger to stop water flow.
FAST SLOW STOP
Throttle
Control
4. Turn off water supply.
Never turn water supply off while pressure
washer engine is running or damage to
pump will result.
STAND ON A STABLE SURFACE AND GRIP
GUN/WAND FIRMLY WITH BOTH HANDS.
EXPECT THE GUN TO KICK WHEN
TRIGGERED.
6. Adjust nozzle spray for the task being performed.
See How To Use Wand instructions in the Opera-
tion section.
SHUTTING DOWN YOUR PRESSURE
WASHER
1. If you have siphoned chemicals or cleaners, you
must siphon clean water through chemical hose to
flush chemical injector.
2. Continue to siphon clean water through hose and
pump for at least one minute before turning off
engine.
NOTE
Failure to siphon clean water through chemical
hose and pump after siphoning chemicals or
cleaners can cause damage to pump.
3. Move throttle control to STOP position to stop
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.
5. Pull trigger on spray gun to relieve any water
pressure in hose or spray gun.
6. Disconnect water supply hose from pump.
7. Coil high pressure hose and store in gun/hose
holder.
8. Place spray gun in gun/hose holder.
9. Place chemical hose in gun/hose holder.
13 — ENG
D20247
MAINTENANCE
WHEN DOING MAINTENANCE, YOU MAY BE EXPOSED TO HOT SURFACES, WATER PRESSURE,
MOVING PARTS, OR FIRE RESULTING IN DEATH. BEFORE PERFORMING ANY MAINTENANCE OR
REPAIR, DISCONNECT SPARK PLUG WIRE, LET ENGINE COOL AND RELEASE ALL WATER PRESSURE. 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. The following routine maintenance schedule is geared to a unit in a normal working
environment. If necessary, the schedule should be modified to suit the conditions under which your pressure
washer is used. The modifications will depend upon the hours of operation and the working environment. If the
pressure washer is in an extremely dirty and/or hostile environment, it will require a greater frequency of all
maintenance checks.
ENGINE
1. Consult Engine Owner's Manual for manufacturer's
recommendations for any and all engine
maintenance.
PUMP
The DAPC pump on your pressure washer was
shipped from the factory with oil. The oil in your pump
must be changed every 50 hours.
1. Run engine until it runs out of fuel. Otherwise, fuel
can leak out, creating a fire/explosion hazard,
when you tip engine.
2. Disconnect spark plug wire and keep it away from
spark plug.
3. Drain engine oil. Refer to engine owner's manual
for correct procedure.
5. Tilt unit and drain pump oil into appropriate
container.
6. Fill pump with 10 ounces of R&O 150 oil. NOTE:
If unable to find R&O 150 oil, use 30W nondetergent oil.
7. Replace oil drain plug and tighten securely.
8. Refill engine with oil and fuel. Refer to engine
owner's manual for correct procedure.
Used oil is a hazardous waste product.
Dispose of used oil properly. Do not discard
with household waste. Check with your
local authorities for safe disposal/recycling
facilities.
4. Using a 5/16" Allen wrench remove pump oil drain
plug.
Oil Drain Plug
D20247
14 — ENG
MAINTENANCE
HOW TO CLEAN THE NOZZLE
If the nozzle becomes clogged with foreign material
such as dirt, excessive pump pressure may develop
and the spray pattern will change. If a nozzle becomes partially clogged or restricted, the pump
pressure will pulsate. If this happens, clean the nozzle
immediately using the nozzle cleaning kit supplied with
your pressure washer. The procedure is as follows:
1. Shut off pressure washer and turn off water
supply.
2. Pull trigger on spray gun to relieve any water
pressure.
3. Disconnect multi-reg wand from spray gun.
4. Remove nozzle from multi-reg wand with 2 mm
Allen wrench from parts bag.
5. Inspect nozzle for obstructions, grime, or any
foreign matter that could restrict flow of water.
6. Remove any obstructions with nozzle cleaning
tools provided and back flush with clean water as
shown.
8. Take this opportunity to inspect wand for obstructions. Back flush wand if obstructions are seen.
9. Reassemble nozzle to wand. Tighten securely to
prevent leaks.
10. Reconnect multi-reg wand to spray gun and turn
on water supply.
11. Start pressure washer and test spray pattern. See
How To Use Wand in the Operation Section.
12. If the spray pattern is still incorrect, replace multireg wand.
HOW TO CLEAN THE WATER INLET FILTER
This screen filter should be checked periodically and
cleaned if necessary.
1. Remove filter by grasping the end and removing it
from water inlet of pump.
2. Clean filter by flushing with water on both sides.
3. Install filter into water inlet of pump.
7. Direct water supply into nozzle end for 30 seconds
to back flush loosened particles.
screen
filter
15 — ENG
D20247
STORAGE
PREPARATION FOR STORAGE
It is recommended that you follow these steps to
protect the internal seals of the pressure washer when
storing the unit for an extended period and WHEN
FREEZING TEMPERATURES ARE EXPECTED.
ENGINE
1. Remove gasoline from engine or add fuel stabilizer, such as "Sta-Bil" to gasoline to prevent
gumming
2. If you are adding fuel stabilizer, connect water
supply and high pressure hose to pump and spray
gun.
3. Turn water supply on and start engine.
4. Squeeze spray gun trigger while engine is running
to avoid operating the pump in ""bypass mode"".
5. Run engine for five minutes, then shut engine off.
6. Disconnect water supply.
7. Disconnect spark plug wire and remove spark
plug.
8. Pour one teaspoon of engine oil into spark plug
hole.
9. Place a rag over spark plug hole and pull starter
rope slowly several times to lubricate internal
cylinder wall.
PUMP
NOTE: Antifreeze needs to be added to pump
if expecting freezing temperatures or storing
for longer than 6 months.
1. Obtain a funnel, six ounces of RV antifreeze, and
approximately 12 inches of garden hose with a
male hose connector attached to one end.
Use only RV antifreeze. Any other antifreeze
is corrosive and can damage pump.
2. Disconnect high pressure hose from pump and
from spray gun.
3. Connect 12 inch length of hose to water inlet of
pump.
4. Add RV antifreeze to hose as shown.
5. Pull engine starter rope slowly several times until
antifreeze comes out of high pressure hose
connection of pump.
6. Remove short hose from water inlet of pump.
7. Install spark plug into spark plug hole and tighten
securely, then reconnect spark plug wire.
8. Drain all water from high pressure hose, coil it, and
store it in cradle of the pressure washer handle.
9. Drain all water from spray gun and wand by
holding spray gun in a vertical position with nozzle
end pointing down and squeezing trigger. Store in
gun/hose holder.
10. Store chemical hose, high pressure hose, spray
gun, and wand so they are protected from damage, such as being run over.
D20247
16 — ENG
TROUBLESHOOTING
PROBLEM
Engine will not start
(see Engine Manual for
further engine troubleshooting)
No or low pressure
(initial use)
CAUSE
1. No fuel.
2. Low oil (if oil-alert equipped).
3. Pressure buildup after initial
use.
4. Not primed or choked.
5. Spark plug wire not attached.
6. Engine ON/OFF switch in OFF
position (If equipped.)
1. Nozzle in wrong position.
2. Low water supply.
3. Leak at high pressure hose.
4. Nozzle obstructed.
5. Water filter screen clogged.
6. Air trapped in hose.
CORRECTION
1. Add fuel.
2. Add required amount of oil.
3. Squeeze gun trigger to relieve pressure.
4. Push primer bulb 3 times or choke
engine.
5. Attach spark plug wire.
6. Place engine ON/OFF switch to ON
position.
1. Rotate nozzle to high pressure setting
2. Water supply must be at least 5 GPM
@ 20 PSI
3. Repair leak. Apply thread sealing tape
if necessary.
4. Clean nozzle with nozzle cleaning tool,
flush out obstruction with clean water.
5. Remove and clean filter.
6. Turn off engine, then water supply.
Disconnect water supply from pump
inlet, then turn water supply on to
remove all air from hose. When there is
a steady stream of water present, turn
water supply off. Reconnect water
supply to pump inlet and turn on water
supply. Squeeze trigger of spray gun
to remove remaining air.
Will not draw chemicals
No or low pressure after
a period of normal use.
Water leaking at gun to
wand connection
Water leaking at pump
Oil leaking at pump
1. Nozzle not in low pressure
position.
2. Chemical filter clogged.
3. Chemical hose not in chemical.
1. Worn seal or packing.
2. Worn or obstructed valves.
1. Worn o-ring.
2. Loose hose connection.
1. Loose connections.
2. Piston packings worn.
1. Oil seals worn.
2. Loose drain plug.
3. Worn fill plug o-ring.
4. Pump overfilled.
5. Incorrect oil used.
1. Refer to Operation section for low
pressure operation of nozzle.
2. Clean filter.
3. Ensure end of chemical hose is fully
submerged into chemical.
1. Have replaced by AWSC.
2. Have replaced by AWSC.
1. Check and replace.
2. Tighten connection. If leak persists,
disassemble connection, apply thread
sealing tape to threads and reassemble
1. Tighten.
2. Have replaced by AWSC.
1. Have replaced by AWSC.
2. Tighten.
3. Check and replace.
4. Check for correct amount.
5. Drain and fill with correct amount
and type of oil.
17 — ENG
D20247
REPAIR PARTS
4
3
5
2
10
1
8
9
7
11
6
1 * 6 HP Briggs & Stratton Engine Model Number 12H802
2 ^ DAPC- Vertical Pump
3 H040 High Pressure Hose
4 17628 Trigger Gun
5 15227 Wand
6 NCT001 Nozzle Cleaning Kit
7 H140 Chemical Hose
8 17619 Tire
9 W137 Pal Nut
10 17367 Hand Grips
11 17926 Foot
* Contact your local engine dealer for parts and service.
^ Contact an Authorized Warranty Service Center near you, call 1-800-888-2468, Ext. 2,1
D20247
18 — ENG
NOTES
19 — ENG
D20247
QUICK FACTS
Pressure Washer Quick Facts
CA LL 1-800-888-2468 EXT. 2,1
TO FIND A LOCAL AUTHORIZED SERVICE CENTER NEAR YOU
FOR REPAIR S AND SERVICE PART PURCHASES.
GAS
OIL
WATER
Use fresh hi gh quali t y gas .
Add st abi l i zer t o fuel tank and run engi ne for 5 mi nutes before s torage.
Pum p oi l : Refer to owners m anual supplied wit h this unit.
Engi ne oil : Refer to engine m anual s uppl i ed wit h t hi s unit .
Som e uni ts are equi pped wi th a low oi l sens or and adequate oil m ust be added or
the uni t will not start.
Use onl y c old water.
Don’t operate unit with c l ogged or m i ss i ng wat er fil ter/sc reen.
Don’t operate unit without adequat e water s uppl y t o pum p. A dequat e wat er supply is
a mi ni m um of 20 psi and 5 gpm .
PRESSURE
ADJUSTMENT
PUMP
BY-PASS
MODE
THERMAL
RELIEF VALVE
HOSE
ENGINE
SOAP
CHEMICALS
NOZZLE
MAINTENANCE
SCHEDULE
The pressure set ting i s pres et at the factory t o achieve optim um cleani ng. If you
need to l ower the pres sure sett i ng, refer to t he owners manual for proper procedure.
Pul l gun trigger every 2 mi nutes whi l e engi ne i s running.
Don’t allow water t o freeze i n pump.
Si phon RV ant ifreeze into pump for c ol d weat her st orage or long term st orage.
Never leave uni t running for more t han 2 minut es without pul l i ng gun trigger; doi ng so
will dest roy pump and void warranty .
Pum p is equipped with a therm al reli ef valve. If the wat er overheat s, t hi s valve wi ll
open and allow a gus h of water to esc ape. Onc e the water is released, t he val ve
cl oses al lowing the pump t o operat e normal l y .
Don’t allow hos es t o cont ac t the HOT engine muffler during or after use.
Never pull the hos e t o m ove the unit .
Do not adj ust or attempt maint enance without cons ulting engine manual or an
authori z ed engi ne s ervice c ent er.
Add st abi l i zer t o fuel tank and run engi ne for 5 mi nutes before s torage.
Al ways turn on the water before st arting the engine.
Use onl y s oaps and chemi cals des i gned for pressure was her use.
Keep nozz l e unclogged. Refer to m anual for c l eani ng procedures .
Chemical/s oap cannot be siphoned i n hi gh pressure sett i ng. Only in low set ting.
Foll ow recomm ended m ai ntenanc e schedule for engine & pum p. Refer to m anual s.
STORAGE
OR
WINTER
STORAGE
Draw clean water t hrough chemical inlet .
Add st abi l i zer t o fuel tank and run engi ne for 5 mi nutes before s torage.
Don’t allow water t o freeze i n pump, gun, wand or hoses.
Si phon RV ant ifreeze into pump for c ol d weat her storage or l ong term st orage.
ALWAYS REFER TO THE MANUALS SUPPLIED WITH THIS UNIT
DeVilbiss Air Power Company • 213 Industrial Drive • Jackson, TN 38301-9615
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