Pacific hydrostar 99741 Installation manual

1600 PSI
PRESSURE WASHER
99741
SET UP AND OPERATING INSTRUCTIONS
Holster (10) not shown.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©2008 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.

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Troubleshooting section at end of manual.
SKU 99741 PAGE 2
CONTENTS
IMPORTANT SAFETY
INFORMATION ............................ 3
GENERAL PRESSURE WASHER
SAFETY WARNINGS.......................3
SPECIFIC PRESSURE WASHER
SAFETY WARNINGS.......................5
VIBRATION SAFETY .........................7
GROUNDING ................................. 8
SYMBOLOGY.....................................8
SPECIFICATIONS.......................... 9
UNPACKING .................................. 9
ASSEMBLY.................................... 9
CONTROLS AND SETUP............ 10
CONTROLS AND FEATURES .........10
SETUP .............................................. 11
OPERATION ................................ 12
OPERATING TIPS ....................... 14
BECOME FAMILIAR WITH YOUR
MACHINE: .....................................14
USE PROPER PRESSURE
WASHER OPERATION
TECHNIQUES:...............................14
CLEANING RECOMMENDATIONS . 14
INSPECTION, MAINTENANCE,
AND CLEANING........................ 16
LIMITED 1 YEAR / 90 DAY
WARRANTY .............................. 17
PARTS LIST................................. 18
ASSEMBLY DIAGRAM................ 19
TROUBLESHOOTING................. 20

For technical questions, please call 1-800-444-3353;
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SKU 99741 PAGE 3
SAVE THIS MANUAL
Keep this manual for the safety warn-
ings and precautions, assembly, operat-
ing, inspection, maintenance and cleaning
procedures. Write the product’s serial
number in the back of the manual near the
assembly diagram (or month and year of
purchase if product has no number). Keep
this manual and the receipt in a safe and
dry place for future reference.
IMPORTANT SAFETY
INFORMATION
In this manual, on the labeling,
and all other information provid-
ed with this product:
This is the safety alert
symbol. It is used to alert
you to potential personal
injury hazards. Obey all
safety messages that
follow this symbol to avoid
possible injury or death.
DANGER indicates
a hazardous
situation which, if not
avoided, will result in death or
serious injury.
WARNING
indicates a
hazardous situation which, if
not avoided, could result in
death or serious injury.
CAUTION, used
with the safety
alert symbol, indicates a
hazardous situation which, if
not avoided, could result in
minor or moderate injury.
NOTICE is used to
address practices
not related to personal injury.
CAUTION, without
the safety alert
symbol, is used to address
practices not related to
personal injury.
General Pressure Washer Safety
Warnings
WARNING Read all safety
warnings and instructions.
Failure to follow the warnings and
instructions may result in electric
shock, re and/or serious injury.
Save all warnings and
instructions for future reference.
Work area safety
Keep work area clean and well lit.1.
Cluttered or dark areas invite acci-
dents.
Do not operate pressure washers in2.
explosive atmospheres, such as in
the presence of ammable liquids,
gases or dust. Pressure washers
create sparks which may ignite the
dust or fumes.
Keep children and bystanders away3.
while operating a pressure washer.
Distractions can cause you to lose
control.
Electrical safety
Pressure washer plugs must match1.
the outlet. Never modify the plug in
any way. Do not use any adapter
plugs with grounded pressure wash-
ers. Unmodied plugs and match-

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Troubleshooting section at end of manual.
SKU 99741 PAGE 4
ing outlets will reduce risk of electric
shock.
Avoid body contact with grounded2.
surfaces such as pipes, radiators,
ranges and refrigerators. There is an
increased risk of electric shock if your
body is grounded.
Do not expose pressure washers to3.
rain or wet conditions. Water enter-
ing a pressure washer will increase
the risk of electric shock.
Do not abuse the cord. Never use4.
the cord for carrying, pulling or un-
plugging the pressure washer. Keep
cord away from heat, oil, sharp edges
or moving parts. Damaged or entan-
gled cords increase the risk of electric
shock.
GFCI PRECAUTIONS5.
Test GFCI (Ground Fault Circuit Inter-
rupter) before each use as follows:
Plug GFCI into power outlet anda.
press reset button. Indicator
should turn on.
Press test button. Indicator shouldb.
turn off.
Press reset button again for use.c.
Do not use if above test fails.
The GFCI device does not protect
against electrical shock due to con-
tact with both circuit conductors or a
fault in any wiring supplying the GFCI
device.
To allow GFCI unit to function
properly, EXTENSION CORDS
MUST NOT BE USED with this
pressure washer.
Personal safety
Stay alert, watch what you are do-1.
ing and use common sense when
operating a pressure washer. Do not
use a pressure washer while you are
tired or under the inuence of drugs,
alcohol or medication. A moment of
inattention while operating pressure
washers may result in serious per-
sonal injury.
Use personal protective equipment.2.
Always wear eye protection and thick
rubber boots. Safety equipment such
as dust mask, non-skid safety shoes,
hard hat, or hearing protection used
for appropriate conditions will reduce
personal injuries.
Prevent unintentional starting. Ensure3.
the switch is in the off-position before
connecting to power source and/
or battery pack, picking up or carry-
ing the equipment. Carrying pres-
sure washers with your nger on the
switch or energizing pressure wash-
ers that have the switch on invites
accidents.
Do not overreach. Keep proper foot-4.
ing and balance at all times. This
enables better control of the pressure
washer in unexpected situations.
Dress properly. Do not wear loose5.
clothing or jewelry. Keep your hair,
clothing and gloves away from mov-
ing parts. Loose clothes, jewelry or
long hair can be caught in moving
parts.
Only use safety equipment that has6.
been approved by an appropriate
standards agency. Unapproved
safety equipment may not provide
adequate protection. Eye protection
must be ANSI-approved for the spe-
cic hazards in the work area.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 5
Pressure washer use and care
Do not use the pressure washer if1.
the switch does not turn it on and off.
Any pressure washer that cannot be
controlled with the switch is danger-
ous and must be repaired.
Disconnect the plug from the power2.
source before making any adjust-
ments, changing accessories, or
storing pressure washers. Such pre-
ventive safety measures reduce the
risk of starting the pressure washer
accidentally.
Store idle pressure washers out of3.
the reach of children and do not allow
persons unfamiliar with the pressure
washer or these instructions to oper-
ate the pressure washer. Pressure
washers are dangerous in the hands
of untrained users.
Maintain pressure washers. Check4.
for breakage of parts and any other
condition that may affect the pres-
sure washer’s operation. If damaged,
have the pressure washer repaired
before use. Many accidents are
caused by poorly maintained pres-
sure washers.
Use the pressure washer, acces-5.
sories etc. in accordance with these
instructions, taking into account the
working conditions and the work to
be performed. Use of the pressure
washer for operations different from
those intended could result in a haz-
ardous situation.
Service
Have your pressure washer serviced
by a qualied repair person using
only identical replacement parts. This
will ensure that the safety of the pres-
sure washer is maintained.
Specic Pressure Washer Safety
Warnings
Maintain labels and nameplates on1.
the equipment. These carry impor-
tant safety information. If unreadable
or missing, contact Harbor Freight
Tools for a replacement.
Risk of injection or severe injury.2.
Keep clear of Nozzle. Do not direct
discharge stream at people or ani-
mals. Keep the work area clear of all
people and animals.
Use the right product for the right3.
job. There are certain applications
for which this product was designed.
Do not use small equipment, tools, or
attachments to do the work of larger
industrial equipment, tools, or attach-
ments. Do not use this product for a
purpose for which it was not intend-
ed.
This product must continuously run4.
with cold water only. Never use hot
water. Dry running will cause serious
damage to the seals. Make sure the
water supply used for the Pressure
Washer is not dirty, sandy, and does
not contain any corrosive chemical
products.
To avoid electrical shock, never start5.
and run the Pressure Washer in the
rain. Never allow water to leak inside
the Body of the Pressure Washer.
Do not direct discharge stream at the
Pressure Washer itself or at other live
electrical equipment.
Do not allow the GFCI Plug to be-6.
come wet. Always place the GFCI

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 6
Plug in a dry location and as far away
as possible from the object being
sprayed. Keep all electrical connec-
tions dry and off the ground.
When using the Pressure Washer, al-7.
ways maintain a rm grip on the Wa-
ter Gun with both hands. Squeezing
the Trigger of the Water Gun causes
a kickback force.
Do not pull or carry the Power Wash-8.
er by its Power Cord, or pull the Cord
around sharp corners or edges. Do
not unplug the Power Washer by pull-
ing on the Cord. Keep the Cord away
from heated surfaces.
Do not handle the GFCI Plug with wet9.
hands.
Avoid unintentional starting. Make10.
sure you are prepared to begin work
before turning on the Pressure Wash-
er.
The work area should have adequate11.
drainage to reduce the possibility of a
fall due to slippery surfaces.
This Pressure Washer is intended for12.
outdoor residential use only.
Some chemicals or detergents may13.
be harmful if inhaled or ingested.
Use an ANSI approved respirator or
mask whenever there is a chance
that vapors may be inhaled.
Keep the High Pressure Hose con-14.
nected to the Pressure Washer and
Spray Gun while the system is pres-
surized. Disconnecting the Pressure
Hose while the unit is pressurized is
dangerous, and may cause injury.
Prior to starting the Pressure Washer15.
in cold weather, check all of the parts
of the unit to make sure ice has not
formed. Do not store the unit any-
where that the temperature will fall
below 32° F (0° C). (See “Inspection,
Maintenance, and Cleaning” section
for proper storage procedures.)
Do not feed already-pressurized wa-16.
ter (Such as that from another pres-
sure washer) into this washer.
When dispensing detergent, apply17.
the detergent to the cleaning area at
low pressure only. Then, spray the
detergent off the cleaning area by us-
ing the adjustable Nozzle. NOTICE:
Detergent dispensing only works
when the spray wand is in the low-
pressure position.
The high pressure water ow can 18.
damage the work surface if not used
properly. Always test the spray in an
open area rst.
Never move the Pressure Washer by19.
pulling on the High Pressure Hose.
Use the Handle provided on the top
of the unit.
Never leave the Pressure Washer20.
unattended when it is plugged into an
electrical outlet. Turn off the Pres-
sure Washer, and unplug it from its
electrical outlet before leaving.
If water is leaking out of the Pressure21.
Washer immediately shut off the unit.
Unplug the Pressure Washer, and
discharge all pressure before tighten-
ing ttings or having repair work done
by a qualied technician.
People with pacemakers should22.
consult their physician(s) before use.
Electromagnetic elds in close prox-
imity to heart pacemaker could cause

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 7
pacemaker interference or pacemak-
er failure.
WARNING: The brass components23.
of this product contain lead, a chemi-
cal known to the State of California
to cause birth defects (or other repro-
ductive harm). (California Health &
Safety code § 25249.5, et seq.)
WARNING: Handling the cord on24.
this product will expose you to lead,
a chemical known to the State of
California to cause cancer, and birth
defects or other reproductive harm.
Wash hands after handling. (Califor-
nia Health & Safety Code § 25249.5,
et seq.)
The warnings, precautions, and in-25.
structions discussed in this instruction
manual cannot cover all possible con-
ditions and situations that may occur.
It must be understood by the operator
that common sense and caution are
factors which cannot be built into this
product, but must be supplied by the
operator.
Vibration Safety
This equipment vibrates during use.
Repeated or long-term exposure to
vibration may cause temporary or
permanent physical injury, particularly
to the hands, arms and shoulders. To
reduce the risk of vibration-related
injury:
Anyone using vibrating equipment1.
regularly or for an extended period
should rst be examined by a doctor
and then have regular medical check-
ups to ensure medical problems are
not being caused or worsened from
use. Pregnant women or people who
have impaired blood circulation to
the hand, past hand injuries, nervous
system disorders, diabetes, or Ray-
naud’s Disease should not use this
piece of equipment. If you feel any
medical or physical symptoms related
to vibration (such as tingling, numb-
ness, and white or blue ngers), seek
medical advice as soon as possible.
Do not smoke during use. Nico-2.
tine reduces the blood supply to the
hands and ngers, increasing the risk
of vibration-related injury.
Wear suitable gloves to reduce the3.
vibration effects on the user.
Use equipment with the lowest vibra-4.
tion when there is a choice between
different processes.
Include vibration-free periods each5.
day of work.
Grip gun as lightly as possible (while6.
still keeping safe control of it). Let
the equipment do the work.
To reduce vibration, maintain the7.
equipment as explained in this manu-
al. If any abnormal vibration occurs,
stop use immediately.
SAVE THESE
INSTRUCTIONS.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 8
GROUNDING
TO PREVENT
ELECTRIC SHOCK
AND DEATH FROM
INCORRECT GROUNDING
WIRE CONNECTION:
Check with a qualied
electrician if you are in doubt
as to whether the outlet is
properly grounded. Do not
modify the power cord plug
provided with the equipment.
Do not use the equipment if
the power cord or plug is
damaged. If damaged, have it
repaired by a service facility
before use. If the plug will not
t the outlet, have a proper
outlet installed by a qualied
electrician.
Equipment marked “Double Insu-1.
lated” does not require grounding.
They have a special double insulation
system which satises OSHA require-
ments and complies with the applica-
ble standards of Underwriters Labo-
ratories, Inc., the Canadian Standard
Association, and the National Electri-
cal Code.
Double insulated equipment may be2.
used in either of the 120 volt outlets
shown in the preceding illustration.
(See Outlets for 2-Prong Plug.)
To allow GFCI unit to function properly,
EXTENSION CORDS MUST NOT BE
USED with this pressure washer.
Symbology
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
V~ Volts Alternating Current
AAmperes
n0xxxx/min. No Load Revolutions per Minute
(RPM)

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SKU 99741 PAGE 9
SPECIFICATIONS
Electrical Requirements 120 V / 60 Hz / 13 A
35 Ft. Long Power Cord
Water Pressure 1,600 PSI
Flow Rate 1.6 GPM
Water Supply Required 3-4 GPM minimum
Hose Length 19 Ft.
UNPACKING
When unpacking, check to make sure
that the item is intact and undamaged. If
any parts are missing or broken, please
call Harbor Freight Tools at the number
shown on the cover of this manual as soon
as possible.
ASSEMBLY
Read the ENTIRE IMPORTANT
SAFETY INFORMATION
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
TO PREVENT
SERIOUS INJURY
FROM ACCIDENTAL
OPERATION:
Before performing any
inspection, maintenance, or
cleaning procedures:
Turn the Power Switch ofa.
the equipment to its “OFF”
position.
Unplug the equipment from itsb.
electrical outlet.
Shut off water supply.c.
Safely discharge all residuald.
water pressure.
Disconnect water supplye.
hose.
Note: For additional information regarding
the parts listed in the following pages,
refer to the Assembly Diagram near
the end of this manual.
Check the Inlet Strainer for any block-1.
age, including packaging debris. The
Pressure Washer may be shipped
with a plastic plug in the Inlet.
Position the rear of the Handle above2.
the rear of the Pressure Washer
body. Connect the Suction Tube from
the top of the Pressure Washer body
to the connector on the bottom of the
Detergent Bottle in the Handle. Make
sure that the Suction tube does not
bend or get pinched during assembly.
Lower the Handle onto the Pres-
sure Washer Body. Then secure the
Handle to the Pressure Washer body,
using the Screws provided.
Insert the Spray Wand into the Wa-3.
ter Gun, and twist the Wand into the
Extension until the Wand locks in
place. Pull the Wand to make certain
it is secure.
Attach the High Pressure Hose to the4.
Outlet Port on the front of the Pres-
sure Washer.
Attach the female part of the Quick5.
Connector Set to the Supply Port on
the back of the Pressure Washer. At-
tach the male part of the Quick Con-
nector Set to a heavy-duty garden
hose (not included). Then, pull back
on the collar on the Female quick
connector and insert the male Quick
Connector.

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Troubleshooting section at end of manual.
SKU 99741 PAGE 10
CONTROLS AND SETUP
Note: Familiarize yourself with the loca-
tion and function of all of the ma-
chine’s controls before proceeding to
setup of the machine.
Controls and features
This item is equipped with a GFCI1.
(Ground Fault Circuit Interruption)
plug. Read and follow these GFCI
precautions:
WARNING! TO PREVENT
ELECTRIC SHOCK AND DEATH:
Test GFCI (Ground Fault Circuit
Interrupter) before each use as
follows:
FIGURE A
INDICATOR RESET
BUTTON
TEST
BUTTON
a. Make sure the trigger is released
and plug GFCI into power out-
let. Press reset button. Indicator
should turn on.
Press test button. Indicatorb.
should turn off.
Press reset button again for use.c.
Do not use if above test fails.
The GFCI device does not protect
against electrical shock due to
contact with both circuit conduc-
tors or a fault in any wiring supply-
ing this device.
Should replacement of the GFCI
Power Plug become necessary,
only a qualied technician should
perform the service.
Do not alter or disable the GFCI
Power Plug.
To allow GFCI unit to function
properly, extension cords must not
be used with this pressure washer.
SPRAY
CONTROL
SLEEVE
PRESSURE
CONTROL
SLEEVE
FIGURE B
2. The Spray Control Sleeve on the
Spray Wand can be rotated for a
range of spray patterns, from a full
fan spray to a direct stream spray.
Also, the Pressure Control Sleeve
can be rotated clockwise for low-
pressure spray and detergent appli-
cation, or rotated counterclockwise
for normal high-pressure spray.
The built-in Detergent Bottle located3.
in the Handle allows the applica-
tion (USING THE LOW PRESSURE
SETTING ONLY) of pressure wash-
ing detergent (not included) onto the
work surface. The Pressure Washer
will automatically mix the detergent
and water. Note: Do not add water
to the Detergent Dispenser.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 11
CAUTION! NEVER use any products not
designed for pressure washer use,
nor any products with chlorine or any
caustic materials, including liquids
containing solvents, trisodium phos-
phate products, ammonia, or acid-
based cleaners.
Fill the Detergent Dispenser only
when the unit is not running or
plugged in.
Setup
CHECK THE WATER SUPPLY.1. Prior to
using the Pressure Washer for the rst
time, it is ESSENTIAL to verify that the
water supply is adequate. The Pres-
sure Washer needs TWICE the water
supply (or volume) than the stated
water output (1.6 GPM). This Pres-
sure Washer will need about 3-4 GPM
to operate correctly and efciently. If
the water is being supplied by a well/
pump, make certain that the well/pump
produces enough water to keep up with
the Pressure Washer’s water demands.
Water supply hoses should be heavy
duty to withstand the forces involved.
Water hoses up to 25’ long must be 5/8”
ID. Water hoses up to 50’ long must be
3/4” ID. Do not use hoses longer than
50’. The more minerals in the water
(the harder the water) you use, the
more often mineral buildup will need
to be cleaned out from the nozzles.
Flow rate of the water supply must nev-
er be allowed to fall below 3 GPM.
To determine the water supply’s ow
rate: Run the water at full for one
minute into a 5 gallon container, and
measure the amount of water in the
container.
CAUTION! If the Pressure Washer is
run with an inadequate water supply, the
pump will cavitate. Cavitation causes the
pump to operate loudly and will damage it.
ARRANGE FOR A PROPER ELEC-2.
TRICAL SUPPLY. This unit uses
a large amount of current, espe-
cially during start-up. Turn off power
switch, then connect this unit only to
a dedicated household circuit capable
of providing ample current to it. A
dedicated circuit has no additional
loads (running devices) connected to
it; shut off any appliances that slow
down or lights that dim while the
washer is running. For best results,
connect the plug to that circuit’s outlet
that is nearest to the circuit breaker
panel.
MAKE SURE THE WASHER IS3.
CLEAN AND READY FOR USE. En-
sure the inlet water strainer, nozzle,
and the rest of the Washer are com-
pletely free of buildup or debris.
PLAN OUT THE JOB:4. Plan out what
areas will be cleaned, how many ses-
sions will be necessary, and how long
the individual sessions of work will
need to be. Plan to clean the higher
portions rst, because the higher
portions will typically remain cleaner
while the other areas are cleaned.
Plan a safe direction for runoff to
ow while the job is being performed,
and plan on working your way in that
direction. You will have a clearer idea
of the time involved to clean the area
after doing a test run, as explained on
page 14.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 12
PREPARE THE CLEANING AREA.5.
Clear the cleaning area of all objects
that are not being cleaned. If any
water prone or delicate items cannot
be moved, protect them. If detergent
is to be used, cover or remove any
plants or animals that may be dam-
aged by the detergent.
PLACE THE PRESSURE WASHER6.
IN AN APPROPRIATE LOCATION.
The location should be protected
from any water from the cleaning
area; select a location higher than
the cleaning area. The pressure
washer’s location should be close
enough so that the hose will reach
every portion of the job to be done
with some slack for movement. Also,
select an area with proper access to
a dedicated circuit.
OPERATION
Read the ENTIRE IMPORTANT
SAFETY INFORMATION
section at the beginning of this
manual including all text under
subheadings therein before set
up or use of this product.
TO PREVENT
SERIOUS INJURY
FROM ACCIDENTAL
OPERATION:
Turn the Power Switch of the
equipment to its “OFF”
position before performing
any inspection, maintenance,
or cleaning procedures.
Attach the High Pressure Hose to1.
the Port on the front of the Pressure
Washer.
Attach the Water Gun into the Water2.
Gun, and press and twist the Wand
into the Extension until the Wand
locks in place.
NOTE: The Pressure Washer will not
pressurize if the Nozzle is not com-
pletely assembled. It will not work
properly with only part of the Wand
installed.
Connect the High Pressure Hose to3.
the Pressure Washer. Make sure all
connections are tight. Then, open
the water supply valve fully. If leaks
occur, shut off water and retighten
connections.
IMPORTANT! Prior to turning on4.
the Pressure Washer, connect the
unit to the water supply. Turn on
the water, disengage the safety,
and squeeze the Trigger until water
ows out of the Water Gun. This
removes air from the system and
allows the unit to properly perform.
Failure to follow this step can dam-
age the Pump.
Connect the GFCI plug and test it,5.
as explained on page 10. Turn the
Power Switch to the “ON” position.
The motor will briey run when the
switch is rst turned on to build
up pressure and then go to standby
until the trigger is squeezed.
NOTE: The Motor does not run con-
tinuously, but only when the Trigger is

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Troubleshooting section at end of manual.
SKU 99741 PAGE 13
squeezed. If a humming noise per-
sists while the motor is on stand-
by, briey discharge the nozzle in
a safe direction.
Point the Nozzle in a safe direction6.
and squeeze the Trigger. Switch
the unit’s switch to the OFF posi-
tion whenever the gun is not in use.
Clean the area, following the tips con-
tained in the Operating Tips section.
When nished spraying turn the 7.
Power Switch to its “OFF” position,
and turn off the water supply.
WARNING: Do not disconnect the
high-pressure hose or water in-
let hose until all pressure is dis-
charged safely.
IMPORTANT8. !When turning off
the unit after use, high pressure will
remain inside the unit, its High Pres-
sure Hose, and the water inlet hose.
Point the Water Gun in a safe direc-
tion and discharge all remaining pres-
sure. The high-pressure hose and
water inlet hose can be disconnected
after the pressure is released.
Store the pressure washer and all ac-9.
cessories according to the directions
under Storage on page 16.
IF ANY UNEXPECTED PROBLEMS
ARISE, PLEASE REFER TO THE
TROUBLESHOOTING SECTION
AT THE END OF THIS MANUAL.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 14
OPERATING TIPS
Become Familiar With your
Machine:
Before beginning work, set aside1.
enough time to familiarize yourself
with this machine’s cleaning rate
and capacity along with all instruc-
tions and precautions contained in
this section, along with the Operating
Instruction and Operating Controls
sections.
This unit is intended for various light2.
to moderate cleaning applications.
If deeper cleaning is desired, it can
be attained at times, however this is
done at the expense of speed. This
unit is not intended for paint stripping
or deep concrete cleaning applica-
tions.
Clean a test area to satisfaction be-3.
fore proceeding with the entire area,
as stated in Cleaning Recommenda-
tions.
This unit has several settings and4.
adjustments that effect the speed of
cleaning and the water force applied
to cleaning. Good guidelines to keep
in mind are:
WIDE STREAM =
QUICKER COVERAGE BUT
LIGHTER CLEANING.
NARROW STREAM =
DEEPER CLEANING BUT
SLOWER COVERAGE.
Use Proper Pressure Washer
Operation Techniques:
The machine may suddenly stop and
require a rest period from time to
time; this is normal and does not
indicate a problem (See Trouble-
shooting, page 20). However, cer-
tain operating techniques may help
reduce or even prevent the need for
such rest periods, increasing ef-
ciency:
Do not release the trigger betweena.
sweeps. Release the trigger as few
times as possible during use. In-
terrupted or sporadic spraying will
cause the unit to heat up quickly and
will increase the need for rest peri-
ods.
Make sure that all obstacles haveb.
been moved and the entire area is
ready before starting.
For small jobs, try to nish an entire c.
portion of the job before taking a
break.
Cleaning Recommendations
Clean an inconspicuous test area1.
to help avoid damaging the surface:
Always begin with the fan spray at
a distance of about 3-5 feet from
the surface being cleaned to avoid
damaging the surface of the object.
Clear the test area of people and
water-sensitive objects. If a pressure
washing detergent is to be used, ap-
ply the detergent to this area as well.
After cleaning this area, switch off the
pressure washer and inspect the area
carefully for any damage or discolor-
ation. If any damage is noted from
the pressure setting, use a lighter
setting when cleaning the rest of the
area. If damage or discoloration is

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 15
noted from the detergent, do not use
it when cleaning.
First, pass over the area with a light2.
cleaning, and then more thoroughly
clean it.
3a. For a vertical or sloped surface:
Wash from the top down.a.
If possible, direct the stream in theb.
same direction as the slope towards
a draining area. This will enable
better drainage and therefore better
cleaning.
3b. For a at surface:
If a thin layer of water accumulatesa.
on the surface, periodically use the
stream to direct this water towards
the drainage.
After the major cleaning is done,b.
sweep the surface with the stream to
help direct loose debris toward the
drainage.
If detergent is to be applied: Only4.
use pressure washing detergent; oth-
er detergents will clog or damage the
pressure washer. Apply the deter-
gent at low pressure, by using the low
pressure setting of the Spray Wand.
Allow the detergent several minutes
to sit and soak into the work surface;
this will improve cleaning efciency.
Briey shut off the unit and turn the
Pressure Control Sleeve counter-
clockwise to switch to high pressure
mode and automatically shut off the
soap dispenser for rinsing. Rinse off
all detergent completely.
Hold the Water Gun at about a 45°5.
angle and steadily sweep the stream
back and forth; if a severe, head-on
angle is used, dirt may imbed in the
surface being cleaned. Follow a
steady, consistent pace during clean-
ing; this will help prevent stripes or
discoloration afterwards. If streaking
or uneven cleaning is noted at the
end of a project, go over the edges of
the streaks with a wide fan pattern to
help blend these lighter areas in.
If several different surfaces are to be6.
cleaned, be careful not to damage
any of the less solid surfaces while
trying to clean the harder ones. This
is especially a concern when cleaning
tile and grout, bricks and mortar, or
stones and mortar.
If wood is being cleaned, be careful7.
not to damage it. Wood will usually
require resurfacing (Sanding) and re-
coat with a surface protectant (wood,
stain, varnish) after it has dried. Try
to avoid leaving water on a wooden
surface; doing so can harm the sur-
face.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 16
INSPECTION, MAINTENANCE,
AND CLEANING
Procedures not specically
explained in this manual
must be performed only by a
qualied technician.
TO PREVENT
SERIOUS INJURY
FROM ACCIDENTAL
OPERATION:
Before performing any
inspection, maintenance, or
cleaning procedures:
Turn the Power Switch ofa.
the equipment to its “OFF”
position.
Unplug the equipment from itsb.
electrical outlet.
Shut off water supply.c.
Safely discharge all residuald.
water pressure.
Disconnect water supplye.
hose.
TO PREVENT SERIOUS
INJURY FROM PRESSURE
WASHER FAILURE:
Do not use damaged
equipment. If abnormal noise
or vibration occurs, have the
problem corrected before
further use.
Before each use,1. inspect the general
condition of the Pressure Washer.
Check for loose screws, misalign-
ment or binding of moving parts,
damaged electrical wiring, damaged
High Pressure Hose, damaged ac-
cessories, and any other condition
that may affect its safe operation. If
abnormal noise or vibration occurs,
have the problem corrected before
further use. Do not use damaged
equipment.
To clean,2. remove excess water from
the Pump by tipping the unit to drain
any remaining water from the inlet
and outlet ttings. Drain the Deter-
gent Dispenser and ush with run-
ning water. Use only a clean cloth
and mild detergent to clean the body
of the Pressure Washer. Do not use
solvents.
Do not immerse any part of the tool
in liquid. Dry off any remaining water
on all parts and ttings.
Remove mineral deposits from the
nozzle using a thin, stiff wire. The
more minerals that are dissolved in
the water (the harder the water) you
use, the more often mineral buildup
will need to be cleaned out from in-
side nozzle.
STORAGE:3. When storing, empty
the Pressure Washer of water. Frost
will damage the Pressure Washer
if the unit contains water. Store the
Pressure Washer in a dry, frost-free
room. Flush the unit with automotive
antifreeze prior to long-term storage.
Dispose of antifreeze according to
local ordinances.
4. WARNING! If the supply cord
or plug of this pressure washer is
damaged, it must be replaced only
by a qualied service technician.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 17
LIMITED 1 YEAR / 90 DAY WARRANTY
Harbor Freight Tools Co. makes every effort to assure that its products meet high
quality and durability standards, and warrants to the original purchaser that for a period
of ninety days from date of purchase that the engine/motor, the belts (if so equipped),
and the blades (if so equipped) are free of defects in materials and workmanship. Har-
bor Freight Tools also warrants to the original purchaser, for a period of one year from
date of purchase, that all other parts and components of the product are free from
defects in materials and workmanship (90 days if used by a professional contractor or
if used as rental equipment). This warranty does not apply to damage due directly or
indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our
facilities, normal wear and tear, or to lack of maintenance. We shall in no event be liable
for death, injuries to persons or property, or for incidental, contingent, special or con-
sequential damages arising from the use of our product. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation
of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF
MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the com-
plaint must accompany the merchandise. If our inspection veries the defect, we will ei-
ther repair or replace the product at our election or we may elect to refund the purchase
price if we cannot readily and quickly provide you with a replacement. We will return re-
paired products at our expense, but if we determine there is no defect, or that the defect
resulted from causes not within the scope of our warranty, then you must bear the cost
of returning the product.
This warranty gives you specic legal rights and you may also have other rights
which vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 18
PARTS LIST
Part Description Qty.
1 Cap 1
2 Screw 2
3 Rear Handle 1
4 Gasket 1
5 Detergent Bottle 1
6 Front Handle 1
7 Screw 12
8 Tube 1
9 Motor Housing 1
10 Holster 1
11 Screw 9
12 Screw 2
13 Power Switch 1
14 Front Housing 1
15 Screw 4
16 Switch 1
17 Capacitor 1
18 Rear Switch Housing 1
19 Front Switch Housing 1
PARTS LIST
Part Description Qty.
20 O-ring 1
21 Shaft 1
22 Rear Housing 1
23 GFCI Plug 1
23a Power Cord 1
24 Shock Absorber 4
25 Motor/pump Assembly 1
26 Clip Cover 1
27 Jacket 1
28 Wheel 2
29 Hubcap 2
30 Water gun 1
30a Nozzle 1
31 High Pressure Hose 1
32 Male Low Pressure
Hose Connector 1
33 Female Low Pressure
Hose Connector 1
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not avail-
able individually as replacement parts.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR
DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT
HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS
QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/
OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD
BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE
BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE
ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER
INSTALLATION OF REPLACEMENT PARTS THERETO.

For technical questions, please call 1-800-444-3353;
Troubleshooting section at end of manual.
SKU 99741 PAGE 19
ASSEMBLY DIAGRAM
30a
23a
Note: Parts 32 and 33, Low Pressure
Hose Connectors, are not shown.

For technical questions, please call 1-800-444-3353.SKU 99741 PAGE 20
If the steps above do not solve the problem or if the repairs involved are
too complex, contact a qualied technician.
Shut off the Pressure Washer, release all pressure in a safe
manner, and disconnect it from power and water before adjusting,
cleaning, or repairing the unit.
TROUBLESHOOTING
The following points should
be applied to help reduce the
frequency of rest periods:
Eliminate any extension cord used.1.
Use proper operating techniques.2.
Review the Operating Tips section,
starting on page 14.
Verify that this unit is being supplied3.
with the correct voltage, see page 11,
#2. Connect the plug to the outlet
nearest the circuit breaker panel and
remove any other loads that may be
on the circuit.
Pressure Washer Stops Suddenly
Dry self thoroughly
and check the
circuit breaker on
your household
panel.
Make sure unit is
totally dry, then
press reset button.
If GFCI continues
to trip, contact
a certied
electrician.
Check for electrical shorts.
If none are found, reset
breaker.
If breaker continues to
trip, try another circuit
or contact a certied
electrician.
BREAKER
NOT TRIPPED BREAKER TRIPPED
The thermal safety Switch may be
tripped. Switch the unit off. Allow the
unit to rest for 20-30 minutes and retry.
UNIT OPERATES
NORMALLY AFTER
RESTING
UNIT DOES NOT
RESTART
Check the indicator on the GFCI
power plug (explained under Controls
and Features, #1 on page 10).
Contact
qualied
technician.
Water leaking from within the housing
Seals may be worn or damaged.
Leaking water creates a shock hazard.
IMMEDIATELY discontinue use. Have the unit repaired
by a qualied technician before further use.
INDICATOR DOES
NOT APPEAR
INDICATOR
APPEARS