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Page 11

For Pressure Washer technical questions, please call 1-800-444-3353.

SKU 67546/67596 

For engine technical questions, please call 1-800-520-0882.

f.  Allow the Engine to run for several seconds. Then, 

if the Choke lever is 

in the CHOKE 

position, move the 

Choke Lever very 

slowly to its 

RUN position.

note:

 Moving the Choke 

Lever too fast could 

stall the engine.

imPORtant:

 Allow the engine to run at no load 

for five minutes with no load after each start-

up so that the engine can stabilize.

3. 

Move the throttle up to operating speed.  

Operating speed is maximum speed (fast or rabbit), 

except during operational break-in period.

Break-in Period

1. 

Breaking-in the engine will help to ensure 

proper equipment and engine operation.

2. 

The operational break-in period will last 

about 3 hours of use.  During this period:
•  Do not apply a heavy load to the equipment.
•  Do not operate the engine at its maximum speed.

3. 

The maintenance break-in period will last 

about 20 hours of use.  After this period:
•  Change the engine oil.
Under normal operating conditions subsequent 

maintenance follows the schedule in the 

MAINTENANCE AND SERVICING section.

equipment Operation

WaRninG

Do not direct spray from the pressure 

washer at a person or an animal.  the water 

stream could cause serious injury.

CautiOn

use the pressure washer only on surfaces 

able to withstand the force of the spray.

1. 

Replace the non-vented brass oil plug with 

the aluminum Pump Breather Plug before 

first use.  The Pump Breather Plug must be 

used whenever the pressure washer is used. 

The brass oil plug (without the breather hole) 

should be used for transporting only.

2. 

Choose the Nozzle that best meets the needs 

of the job.  Only use the Nozzles on surfaces 

capable of withstanding the force of the spray.  

Only use the Black nozzle when using pressure 

washer detergent.  the power of the other 

nozzles will propel mist back at the operator 

and can embed detergent into the surface.

3. 

Pull back the quick connect collar and push the 

Nozzle onto the end of the Wand.  Make sure the 

quick connect collar locks the Nozzle in place.

4. 

Turn the water supply on and hold down the 

Trigger to start the stream. Be aware that 

when it is first started, the gun will kick.   

5. 

It is best to start at a low pressure setting, and 

adjust the pressure upwards.  Test spray the 

edge of the surface to be cleaned first to make 

sure that the stream is not too strong for the 

surface.  If the stream damages the surface, turn 

the Pressure Regulator Knob counterclockwise 

to reduce the pressure.  Moving further away 

from the surface being cleaned will also reduce 

the pressure being applied to the surface.  If 

the stream is still too strong, turn the engine off, 

turn the water supply off, discharge the excess 

pressure from the gun by squeezing the Trigger, 

and change to a lower pressure Nozzle.  

6. 

To increase the pressure, turn the 

Pressure Regulator Knob clockwise.

7. 

Hold the Wand at about a 45° angle when 

cleaning; spraying the surface directly could 

embed dirt into the surface (especially 

with the high pressure Nozzles).  Spray at 

a distance of about three to five feet.
•  Clean vertical and sloped surfaces 

from the top down. 

•   When cleaning horizontal surfaces, occasionally 

use the stream to clear the area of excess water.

CautiOn  Do not allow the Pressure Washer 

to idle without the trigger held down, for 

more than two minutes.  the water will 

heat up and damage the Pressure Washer.  

RiSK OF BuRnS!  the pump will also expel 

very hot water if allowed to idle too long.

8. 

Hold the Trigger down and move the Wand back 

and forth slowly and steadily to pressure wash the 

surface.  Take special care when spraying surfaces 

made of two different materials (brick and mortar, 

for example), so as to not damage the softer of 

the two materials during pressure washing.  

9. 

If the surface is streaked or uneven at the end 

of a job, switch to a Nozzle that has a wider 

spray pattern to blend the affected area.  

10.  When finished; release the Trigger on the 

spray handle, turn the engine power switch 

to “OFF”, turn the water supply off and 

then shut off gas supply to the engine.

11.  Squeeze the Trigger to release excess pressure.
12.  If Pressure Washer detergent has been 

used for the job, run clean water through the 

system to eliminate detergent residue.  

13.  To prevent accidents, turn off the engine and after 

the engine has cooled, disconnect its spark plug 

wire after use.  Drain all water out of the unit. 

Clean external parts with clean cloth, then 

store the equipment out of children’s reach.

Rev 10c, 11c

Summary of Contents for 67596

Page 1: ...t 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 incl...

Page 2: ...ctions 9 Starting the Engine 11 Equipment Operation 13 Service 13 Maintenance Procedures 13 Cleaning Maintenance and Lubrication Schedule 15 Storage 16 Troubleshooting 18 Parts Lists and Diagrams 18 General Parts List 19 General Assembly Diagram 20 Parts List A Pump 21 Assembly Diagram A Pump 22 Parts List B Engine Item 67546 EPA version 23 Assembly Diagram B Engine Item 67546 EPA version 24 Parts...

Page 3: ... by a qualified mechanic to allow efficient high altitude use and to prevent damage to the engine and any other devices used with this product Save This Manual Keep this manual for the safety warnings and precautions assembly operating 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 i...

Page 4: ...rbon monoxide This is a poison you cannot see or smell NEVER use inside a home or garage EVEN IF doors and windows are open Only use OUTSIDE and far away from windows doors and vents 2 Keep children away from the equipment especially while it is operating 3 Do not leave the equipment unattended when it is running Turn off the equipment and remove safety keys if available before leaving the work ar...

Page 5: ...n the low pressure position 26 Injection Hazard The high pressure water jet produced by this tool can cut skin or cause injury to hands or eyes Do not allow spray to strike you and do not spray toward people or animals Do not spray the tool itself or any electrical wiring receptacle 27 This Pressure Washer is intended for outdoor residential use only 28 In case of an emergency during use immediate...

Page 6: ... If water is leaking out of the Pressure Washer immediately turn off the unit Unplug the Pressure Washer and discharge all pressure before tightening fittings or having repair work done by a qualified technician 9 When the engine is running do not allow the Pressure Washer to remain idle for more than two minutes If allowed to remain idle the water in the unit will heat up possibly causing damage ...

Page 7: ... with the Handle Bolts 15 and Nuts 16 4 Outlet Connector 35A Water Inlet Connection Detergent Inlet Connection 26A Pressure Regulator Knob 44A Figure 2 Attach the Hose 18 to the Outlet Connector 35A on the unit See Figure 2 5 Pull the Collar at the end of the hose back and attach the Gun 19 to the hose 6 Screw the Wand 20 onto the Gun 19 and secure with the grommet 7 Choose the right Nozzle 5 for ...

Page 8: ...er Ignition Switch Recoil Starter Fuel Filler Cap Starter Handle Choke Lever Fuel Tank Muffler Fuel Valve Lever Oil Drain Plug Spark Plug Oil Filler Cap Dipstick Item 67596 EPA CARB version Throttle Lever Air Filter Ignition Switch Recoil Starter Fuel Filler Cap Starter Handle Choke Lever Fuel Tank Muffler Fuel Valve Lever Oil Drain Plug Spark Plug Oil Filler Cap Dipstick Item 67546 EPA version ...

Page 9: ... low oil sensor to shutdown the engine and prevent restart 4 If the oil level is low add the appropriate type of oil until the oil level is at the bottom lip of the oil fill hole Oil type 32 F or above SAE 10W 30 Below 32 F SAE 5W 30 5 Replace the Oil Filler Cap CAUTION Do not run the engine with too little or too much oil The engine will be permanently damaged Checking Pump Oil Level 1 The Oil pu...

Page 10: ... evaporate before starting engine To prevent FIRE do not start the engine while the smell of fuel hangs in the air Start Procedure Before starting the engine a Follow the Set Up Instructions to prepare the equipment including installing the Breather connecting then turning on the hose and attaching the Nozzle b Fill the engine with the proper amount and type of both fuel and oil c Read the Equipme...

Page 11: ...e aware that when it is first started the gun will kick 5 It is best to start at a low pressure setting and adjust the pressure upwards Test spray the edge of the surface to be cleaned first to make sure that the stream is not too strong for the surface If the stream damages the surface turn the Pressure Regulator Knob counterclockwise to reduce the pressure Moving further away from the surface be...

Page 12: ... technical questions please call 1 800 520 0882 Stopping the Engine To stop the engine in an emergency turn the engine switch off Under normal conditions use the following procedure 1 Slide the Throttle Lever to SLOW the turtle 2 Turn the Engine Switch off 3 Close the Fuel Valve O i OFF O i OFF REV 11c ...

Page 13: ...ian service the equipment instead Cleaning Maintenance and Lubrication Schedule Note This maintenance schedule is intended solely as a general guide If performance decreases or if equipment operates unusually check systems immediately The maintenance needs of each piece of equipment will differ depending on factors such as duty cycle temperature air quality fuel quality and other factors Note The ...

Page 14: ...neath the crankcase s drain plug 4 Remove the drain plug and if possible tilt the crankcase slightly to help drain the oil out Recycle used oil 5 Replace the drain plug and tighten it 6 Clean the top of the Dipstick and the area around it Remove the Dipstick by threading it counterclockwise and wipe it off with a clean lint free rag 7 Full level Full level Add the appropriate type of oil until the...

Page 15: ...water The water will gradually enter the engine and cause rust damage Apply a thin coat of rust preventive oil to all metal parts 2 FUEL WARNING To prevent serious injury from fire Drain the fuel tank in a well ventilated area away from ignition sources If the engine is hot from use shut it off and wait for it to cool before draining fuel Do not smoke a Place a funnel leading to a proper gasoline ...

Page 16: ...g gap 4 Spark plug wire broken 5 Incorrect spark timing or faulty ignition system Ignition spark Related 1 Connect spark plug wire properly 2 Clean spark plug 3 Correct the spark plug gap 4 Replace spark plug wire 5 Have qualified technician diagnose repair ignition system Compression Related 1 Cylinder not lubricated Problem after long storage periods 2 Loose or broken spark plug Hissing noise wi...

Page 17: ...ed gasoline 2 Use cold weather fuel and oil additives to prevent backfiring 3 Have qualified technician diagnose and service engine Does not produce high pressure 1 Diameter of water supply hose too small 2 Water supply is restricted 3 Not enough water supply 1 Replace hose with a inch hose 2 Check water supply hose for kinks leaks or blockage 3 Open water faucet all the way Output pressure varies...

Page 18: ...E 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 ...

Page 19: ...U 67546 67596 For Engine technical questions please call 1 800 520 0882 General Assembly Diagram REV 11c 9 10 37 38 39 11 12 12 13 13 14 15 16 17 18 19 20 27 28 27 28 29 30 31 32 33 34 35 36 21 40 26 25 24 23 22 1 2 3 4 5 6 7 8 Item 67546 EPA version Item 67596 EPA CARB version ...

Page 20: ...ng 15x2 2 18A Spacer 19A O Ring 22x2 20A Pressure Ring Part Description 21A Water Seal 22A Inlet Valve Plug 23A Backup Ring 24A O Ring 25A Check Valve 26A Detergent Inlet 27A O Ring 4 47x1 78 28A Ball 29A Cone Spring 30A O Ring 31A Outlet Valve 32A Valve Spring 33A O Ring 34A Siphon Body 35A Outlet Connector 36A Backup Ring 37A O Ring 38A Valve Core 39A Plug 40A Pump Manifold Part Description 41A ...

Page 21: ...Page 21 For Pressure Washer technical questions please call 1 800 444 3353 SKU 67546 67596 For Engine technical questions please call 1 800 520 0882 Assembly Diagram A Pump REV 11c ...

Page 22: ... 47B Tappet Valve 2 48B Lifter Valve 2 49B Plate Asm Lifter Stopper 1 50B Bolt Valve Adjusting 2 Part Description Qty 51B Rocker Valve 2 52B Nut Valve Adjusting 2 53B Nut Valve Lock 2 54B Spring Valve 2 55B Starter Asm Recoil 1 56B Bolt 3 57B Shroud 1 58B Shroud Cylinder Body 1 59B Shield Lower 1 60B Protector Oil 1 61B Switch Asm Stop Engine 1 62B Bolt 2 63B Bolt 1 64B Collar 1 65B Bolt 1 66B Bol...

Page 23: ... 7 9 9 5 5 12 40 79 78 81 82 83 82 84 85 85 80 92 93 93 94 95 96 97 98 99 86 88 90 90 5 75 76 76 77 87 89 91 30 31 31 31 31 31 31 24 29 26 25 28 28 27 57 66 66 66 66 58 62 62 65 63 60 64 59 61 68 69 70 71 67 Assembly Diagram B Engine Item 67546 EPA version REV 11c B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B...

Page 24: ...53B Nut Valve Lock 2 54B Spring Valve 2 55B Starter Assy Recoil 1 56B Bolt 3 Part Description Qty 57B Shroud 1 58B Shroud Cylinder Body 1 59B Shield Lower 1 60B Protector Oil 1 61B Switch Subassembly Stop Engine 1 62B Bolt 2 63B Bolt 1 64B Collar 1 65B Bolt 1 66B Bolt 4 67B Carburetor Assy 1 68B Gasket Air Cleaner 1 69B Gasket Carburetor 1 70B Plate Carburetor Insulator 1 71B Gasket Carburetor Ins...

Page 25: ...0B 23B 23B 19B 13B 32B 56B 56B 56B 55B 11B 1B 4B 2B 3B 5B 6B 8B 10B 10B 10B 10B 8B 7B 9B 9B 5B 5B 12B 40B 103B 104B 105B 106B 107B 108B 109B 110B 97B 99B 101B 101B 5B 98B 100B 102B 30B 31B 31B 31B 31B 31B 31B 24B 29B 26B 25B 28B 28B 27B 68B 69B 70B 71B 67B 57B 58B 59B 60B 63B 64B 61B 62B 62B 65B 72B 72B 73B 74B 75B 75B 76B 77B 77B 78B 79B 66B 66B 66B 66B 81B 80B 83B 84B 85B 84B 86B 87 87 82B 88B 8...

Page 26: ...condition exists HFT will repair your engine at no cost to you including diagnosis parts and labor Manufacturer s Warranty Coverage The 1995 and later engines are warranted for two 2 years If any emission related part on your engine is defective the part will be repaired or replaced by HFT Harbor Freight Tools Emission Control Defects Warranty Coverage Engines are warranted for a period of two 2 y...

Page 27: ...4 Coverage Exclusions Warranty claims shall be filed in accordance with the provisions of the HFT warranty policy explained in the box at the top of the previous page HFT shall not be liable for any loss of use of the engine for any alternative usage for any damage to goods loss of time or inconvenience Warranty coverage shall also be excluded for any part which fails malfunctions or is damaged du...

Page 28: ...3491 Mission Oaks Blvd PO Box 6009 Camarillo CA 93011 800 444 3353 ENGINES POWERED BY REV 11c ...

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