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DG • 8.919-011.0 • Rev. 04/19

11

  

PRESSURE WASHER    

 

OPERATOR’S MANUAL

  

WARNING: Some detergents 
may be harmful if inhaled or 
ingested, causing severe nau-
sea, fainting or poisoning. The 
harmful elements may cause 
property damage or severe 
injury.
STEP 1: 
Connect detergent injec-
tor to discharge nipple on machine.

Connect high pressure hose to injector with quick 
coupler. (Check to make sure locking coupler sleeves 
are in proper position before applying water pressure).

STEP 2: Use detergent designed 
specifically for pressure washers. 
Prepare detergent solution as 
required by the manufacturer.  Fill 
a container with pressure washer 
detergent. Place the filter end of 
detergent suction tube into the 
detergent container.
STEP 3: With safety latch on 

spray gun engaged, secure black 
detergent nozzle into quick cou-
pler.  

NOTE:  Detergent cannot be 

applied using red, yellow, green or 
white nozzles.
STEP 4: With the engine running, 

pull trigger to operate machine. Liquid detergent is 
drawn into the machine and mixed with water. Apply 
detergent to work area. Do not allow detergent to dry 
on surface. 
IMPORTANT: You must flush the detergent injec-
tion system after each use by placing the suction 
tubeinto a bucket of clean water, then run the 
pressure washer in low pressure for 1-2 minutes. 
*Kit injector sold separately.
*Nozzles Brass (Black) and Red sold separately.

THERMAL PUMP PROTECTION

If you run the engine on your pressure washer for 
1-2 minutes without pressing the trigger on the spray 
gun, circulating water in the pump can reach high 
temperatures. When the water reaches this tempera-
ture, the pump protector engages and cools the pump 
by discharging the warm water onto the ground. This 
thermal device prevents internal damage to the pump.

CLEANING TIPS

Pre-rinse cleaning surface with fresh water. Place de-
tergent suction tube directly into cleaning solution and 
apply to surface at low pressure (for best results, limit 
your work area to sections approximately 6 feet square 
and always apply detergent from bottom to top). Allow 
detergent to remain on surface 1-3 minutes. Do not al-
low detergent to dry on surface. If surface appears to 
be drying, simply wet down surface with fresh water. 
If needed, use brush to remove stubborn dirt. Rinse 
at high pressure from top to bottom in an even sweep-
ing motion keeping the spray nozzle approximately  
1 foot from cleaning surface. Use overlapping strokes 
as you clean and rinse any surface. For best surface 
cleaning action spray at a slight angle.

Recommendations:

  •  Before cleaning any surface, an inconspicuous 

area should be cleaned to test spray pattern and 

distance for maximum cleaning results.

  •   If painted surfaces are peeling or chipping, use 

extreme caution as pressure washer may remove 

the loose paint from the surface.

  •   Keep the spray nozzle a safe distance from the  

surface you plan to clean. High pressure wash a 

small area, then check the surface for damage. If 
no damage is found, continue to pressure washing.

       

CAUTION - Never use:

  •   Bleach,  chlorine  products  and  other  corrosive 

chemicals

  •   Liquids  containing  solvents  (i.e.,  paint  thinner, 

gasoline, oils)

  •   Tri-sodium phosphate products
  •   Ammonia products
  •   Acid-based products
These chemicals will harm the machine and will dam-
age the surface being cleaned.

RINSING

It will take a few seconds for the detergent to clear.  
Apply safety latch to spray gun. Remove  black soap 
nozzle from the quick coupler. Select and install the 
desired high pressure nozzle. 

NOTE: You can also stop 

detergent from flowing by simply removing detergent 
siphon tube from bottle.

WARNING

*Soap Nozzle

*Detergent 

Injector

Discharge 

Nipple

Strainer

Quick 

Coupler

High Pressure 

Hose

DETERGENT AND GENERAL CLEANING TECHNIQUES

Summary of Contents for DG-232437

Page 1: ...your local K rcher Commercial Pressure Washer Dealer nearest you visit www karcher com us CHAUD OI L AL ER T WH EN OIL LEV EL LOW ENG INE STO PS IMM EDI ATE LY RE AD OW NE R S MA NU AL BE FO RE OP ER...

Page 2: ......

Page 3: ...ed to the pressure washer You should record both serial number and date of purchase and keep in a safe place for future reference Important Safety Information 4 6 Component Identification 7 Assembly I...

Page 4: ...l installations must comply with local codes Contact your electrician plumber utility company or the selling distributor for specific details WARNING RISK OF ASPHYXIATION USE THIS PRODUCT ONLY IN A WE...

Page 5: ...VERE INJURY TO PERSONS KEEP CLEAR OF NOZZLE WARNING WARNING High pressure de veloped by these machines will cause personal injury or equip ment damage Keep clear of nozzle Use caution when op erating...

Page 6: ...ool down or maintain the heating coil may result in a steam explosion 26 In oil burning models use only kerosene No 1 home heating fuel or diesel If diesel is used add a soot remover to every tankful...

Page 7: ...r on spray gun is released for more than 1 2 minutes water will leak from valve Warm water will discharge from pump protector onto floor This system prevents internal pump damage COMPONENT IDENTIFICAT...

Page 8: ...is seated properly STEP 8 Connect the high pres sure hose to the pump discharge nipple Push coupler collar forward until secure STEP 5 Attach nozzle extension to spray gun wand Tighten both by hand S...

Page 9: ...level by using dipstick or observe oil level in oil window if equipped Use 30 wt non detergent oil STEP 5 Rotate the fuel shut off valve to the On position Slide the fuel valve lever to the ON positio...

Page 10: ...ION Small engines may kick back Do not hold pull starter grip tightly in hand OPERATING INSTRUCTIONS CON T WARNING Never replace nozzles without engaging the safety latch on the spray gun trigger The...

Page 11: ...NG TIPS Pre rinse cleaning surface with fresh water Place de tergent suction tube directly into cleaning solution and apply to surface at low pressure for best results limit your work area to sections...

Page 12: ...not being operated or is being stored for more than one month follow these instructions 1 Replenish engine oil to upper level 2 Drain gasoline from fuel tank fuel line fuel valve and carburetor 3 Pou...

Page 13: ...lves Contact local dealer Nozzle is obstructed Blow out or remove debris with fine needle Pump sucking air inlet hose leaking Check all pump lines and connections PRESSURE LOW AFTER PERIOD OF NORMAL U...

Page 14: ...0 garden hose NO DETERGENT Detergent suction tube not properly connected to machine Check connection Detergent is too thick Dilute detergent For best results use manufac turers detergent Detergent fil...

Page 15: ...r Perform maintenance more often under severe conditions MAINTENANCE SCHEDULE Engine Oil SAE 10W 30 Inspect Daily Change First month or 20 hours Every 100 hours or every 6 months after first month Fil...

Page 16: ...3537 1 9 802 295 0 Nozzle 0003 Red 1 9 802 296 0 Nozzle 0015 Yellow 1 9 802 297 0 Nozzle 0025 Green 1 8 932 298 0 Nozzle 0040 White 1 4 8 904 154 0 Quick Connect Nozzle Kit 035 303037 354037 1 8 712 3...

Page 17: ...wer Washer Change pump oil after first 50 hours every year or 500 hours thereafter Use SAE 10W 40 non foaming Engine oil Check daily before first use of your new Power Washer Change engine oil after f...

Page 18: ...www karcher com us Form 8 919 011 0 Revised 04 19 Printed in U S A or Mexico...

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