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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 first 

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 efficiently.  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 flow 

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 IS 

3. 

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 first, because the higher 

portions will typically remain cleaner 

while the other areas are cleaned.  

Plan a safe direction for runoff to 

flow 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.

Summary of Contents for 99741

Page 1: ... 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 requi...

Page 2: ... 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 DIAGRA...

Page 3: ... 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 inst...

Page 4: ... 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 influence 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 boot...

Page 5: ...ld result in a haz ardous situation Service Have your pressure washer serviced by a qualified repair person using only identical replacement parts This will ensure that the safety of the pres sure washer is maintained Specific Pressure Washer Safety Warnings Maintain labels and nameplates on 1 the equipment These carry impor tant safety information If unreadable or missing contact Harbor Freight T...

Page 6: ...pressurized is dangerous and may cause injury Prior to starting the Pressure Washer 15 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 s...

Page 7: ... particularly to the hands arms and shoulders To reduce the risk of vibration related injury Anyone using vibrating equipment 1 regularly or for an extended period should first 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 injurie...

Page 8: ... installed by a qualified electrician Equipment marked Double Insu 1 lated does not require grounding They have a special double insulation system which satisfies 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 be 2 used in either of the 120 volt outle...

Page 9: ...r 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 above 2 the rear of the Pressure Washer body Connect the Suction Tube from the top of the Press...

Page 10: ...t 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 qualified 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 C...

Page 11: ...M To determine the water supply s flow 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 pumpwillcavitate Cavitationcausesthe pumptooperateloudlyandwilldamageit Arrange for a proper elec 2 trical supply This unit uses a large amount of current espe cially dur...

Page 12: ... position before performing any inspection maintenance or cleaning procedures Attach the High Pressure Hose to 1 the Port on the front of the Pressure Washer Attach the Water Gun into the Water 2 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 onl...

Page 13: ...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 IMPORTANT 8 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 press...

Page 14: ...s 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 effi ciency Do not release the trigger between a sweeps Release the trigger as few times as possible during use In terrupted or sporadic...

Page 15: ...into the work surface this will improve cleaning efficiency Briefly 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...

Page 16: ...at 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 fittings Drain the Deter gent Dispenser and flush with run ning water Use only a clean cloth and mild detergent to clean the body of t...

Page 17: ... 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 fitn...

Page 18: ...er 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...

Page 19: ...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 ...

Page 20: ... 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 certified electrician Check for electrical shorts If none are found reset breaker If breaker continues to trip try another circuit or contact a certified electrician Breaker not Tripped Bre...

Page 21: ...possible Air may be getting in the water supply hose check all connections All connections are tight Connections are loose Retighten connections Internal valves seals or the nozzle may be worn contact a qualified technician Troubleshooting Continued Dry self thoroughly and check the voltage at the outlet and press the reset button on the GFCI power plug explained under Controls and Features 1 on p...

Page 22: ...eck that tip is free from debris and deposits All connections are tight Connections are loose Tip is clean Tip is dirty Clean tip Internal valves or seals may be worn or sticking contact a qualified technician Detergent will not dispense Verify that proper type of pressure washer detergent is being used and that the low pressure setting is being used see pages 10 11 3 Non pressure washer detergent...

Page 23: ...d water before adjusting cleaning or repairing the unit Troubleshooting Continued Problem There is no water coming out of the spray gun when the pump is run ning and trigger is depressed Cause Hard water deposits calcium has built up inside the small orifices block ing the water from entering the pump Solution Unplug the unit lay the unit face down fill pump at the water inlet fitting with calcium...

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