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#9.800-085.0  •  REV. 12/06

OPERA

TOR’S MANU

AL

  

PRESSURE 

W

ASHER

  

8

THeRMAl PUMP PRoTeCTIoN

If you run the motor on your pressure washer for 3-5 
minutes without pressing the trigger on the spray gun, 
circulating water in the pump can reach high tempera-
tures. When the water reaches this temperature, the 
pump protector engages and cools the pump by dis-
charging 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 deter-
gent suction tube directly into cleaning solution and apply 
to surface at low pressure (for best results, limit your work 
area  to  sections  approximately  6'  square  and  always 
apply detergent from bottom to top). Allow detergent to 
remain on surface 1-3 minutes. Do not allow 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 sweeping motion keeping the spray 
nozzle approximately 1' from cleaning surface. Use over-
lapping 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 wash-
ing.

       CAUTION - Never use:

  •   Bleach, chlorine products or other corrosive chemi-

cals

  •   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:  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 injector 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. 
Household detergents could dam-
age  the  pump.  Prepare  detergent 
solution as required by the manu-
facturer.  Fill a container with pres-
sure  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  de-
tergent  nozzle  into  quick  coupler.  
NoTe:  Detergent cannot be applied 
using a pressure nozzle.

STeP 4: With the motor 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 injection 
system after each use by placing the suction tube 
into a bucket of clean water, then run the pressure 
washer in low pressure for 1-2 minutes.

WARNINg

deTeRgeNTS & geNeRAl CleANINg TeCHNIqUeS

detergent 

Injector

Filter

discharge  

Nipple

quick 

Coupler

Summary of Contents for HD 1.9/15 Ed - 1.575-251.0

Page 1: ...15 Ed 1 575 251 0 Model HD 2 8 10 Ed 1 575 252 0 Model HD 3 5 20 Ea 1 575 253 0 9 800 085 0 OPERATOR S MANUAL To locate your local Kärcher Commercial Pressure Washer Dealer nearest you please call 1 888 805 9852 or visit www karchercommercial us ...

Page 2: ... safe place for future reference 9 800 085 0 REV 12 06 Important Safety Information 3 4 Component Identification 5 Assembly Instructions 6 Operating Instructions 7 Applying Detergents General Cleaning Techniques 8 Shut Down and Clean Up 9 Storage 9 Troubleshooting 10 Preventative Maintenance 11 Oil Change Record 11 Exploded View 12 Exploded View Parts List 13 15 Hose and Spray Gun Assembly 16 Unlo...

Page 3: ...printing Manufacturer reserve the right to make changes at any time without incurring any obligation Owner User Responsibility The owner and or user must have an understanding of the manufacturer s operating instructions and warnings before using this pressure washer Warning information should be emphasized and understood If the operator is not fluent in English the manufacturer s instructions and...

Page 4: ...y changes made to our standard machines or any compo nents not purchased from us 12 Be certain all quick coupler fittings are secured before using pressure washer 13 Never run pump dry or leave spray gun closed longer than 5 minutes 14 Inlet water supply must be cold and clean fresh water 15 Do not allow children to operate the pressure washer at any time 16 Protect from freezing 17 When the machi...

Page 5: ...nd to water pump discharge nipple and the other end to spray gun Pump Protector Cycles fresh cool water through pump when recirculating water reaches 140 F GFCI Ground fault circuit interrupter trips when voltage leaks to ground Note If trigger on spray gun is released for more than 2 minutes water will leak from valve Warm wa ter will discharge from pump protector onto floor This system prevents ...

Page 6: ...sure it 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 STEP 6 Pull the spring loaded collar of the wand coupler back to insert your choice of pressure nozzle STEP 9 Connect garden hose to the cold water source Assembly instructions STEP 10 Connect t...

Page 7: ... safety latch on the spray gun trigger Safety Latch STEP 3 Connect to appropriate power supply Push reset button on GFCI STEP 4 Turn machine on by turning switch at top of motor On Off Switch The five color coded quick connect nozzles provide a wide array of spray widths from 0 to 45 and are easily accessible when placed in the convenient rubber nozzle holder which is provided on the front of the ...

Page 8: ...ne products or other corrosive chemi cals 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 a...

Page 9: ...re Pump Water Inlet Pump Discharge Nipple Safety Latch STORAGE CAUTIoN Pump Storage CAUTION Always store your pres sure washer in a location where the temperature will not fall below 32 F 0 C The pump in this machine is susceptible to permanent damage if frozen Freeze damage is not covered b y war ranty If you must store your pressure washer in a location where the temperature is below 32 F you ca...

Page 10: ...pply and connections on suction line Broken or weak suction or delivery valve spring Check and replace if necessary Foreign matter in valves Check and clean if necessary Worn bearings Check and replace if necessary Excessive temperature of water Reduce to below 160 F PRESENCE OF WATER IN PUMP OIL Oil seal worn Check and replace if necessary High humidity in air Check and replace if necessary Pisto...

Page 11: ... life of your pressure washer Perform maintenance more often under severe conditions OIL CHANGE RECORD Check pump oil and engine oil level before first use of your new pressure washer Preventative Maintenance MAINTENANCE SCHEDULE Pump Oil Inspect Daily inspect the oil level Change After first 50 hours then every 500 hours or annually Replace High Pressure Nozzle Every 6 months Replace Quick Connec...

Page 12: ...corrosion thermal expansion scale deposits or a contaminated water supply such as water in the unit with chloride content higher than that of 80 mg liter or use of chemicals not approved or recommended by Kärcher 8 Defects caused by improper voltage voltage spikes or power transients in the electrical supply 9 Devices or accessories not distributed or approved by Kärcher 10 Any cost of labor arisi...

Page 13: ...Form 9 800 085 0 Revised 12 06 Printed in U S A ...

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