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9

Deck Cleaning

(with or without detergent)
Pre-rinse deck and surrounding area with
fresh water. If using Kärcher Deck and Patio
Cleaner, place detergent suction tube directly
into cleaning solution and apply to surface at
low pressure. For best results, limit your
work area to smaller sections of approxi-
mately 25 square feet. Allow Kärcher Deck
and Patio Cleaner to remain on surface 1-3
minutes. Do not allow detergent to dry on
surface. Rinse at high pressure in a long
sweeping motion keeping the spray nozzle
approximately 3-6 inches from the cleaning
surface. Always clean from top to bottom and
from left to right. When moving on to a new
section of the cleaning surface, be sure to
overlap the previous section to eliminate stop
marks and ensure a more even cleaning
result.
Caution: Do not use rotary spray wand on
wood surfaces as it may cause damage.

House Siding

(with or without detergent)
Pre-rinse cleaning surface with fresh water. If
using Kärcher House or Window and Siding
Cleaner, place detergent suction tube directly
into cleaning solution and apply to surface at
low pressure (for best results, limit your work
area to sections of approximately 6 feet and
always apply detergent from bottom to top).
Allow Kärcher House or Window and Siding
Cleaner 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
special Wash Brush Attachment to remove
stubborn dirt. Rinse at high pressure from top
to bottom in an even sweeping motion
keeping the spray nozzle approximately 6
inches from the cleaning surface.
Caution: Do not use rotary spray wand on
siding as it may cause damage.

CLEANING TIPS

Cement Patios, Brick and Stone

(with or without detergent)
Pre-rinse cleaning surface with fresh water. If
using Kärcher Deck and Patio or All Purpose
Cleaner, place detergent suction tube directly
into cleaning solution and apply to surface at
low pressure. For best results, limit your
work area to smaller sections of approxi-
mately 25 square feet. Allow Kärcher Deck
and Patio or All Purpose Cleaner to remain
on surface 1-3 minutes. Do not allow
detergent to dry on surface. Rinse at high
pressure in a sweeping motion keeping the
spray nozzle approximately 3-6 inches from
the cleaning surface. Always clean from top
to bottom and from left to right.
For removing extremely stubborn stains,
use the rotary spray wand.

Cars, Boats & Motorcycles

(with or without detergent)
Pre-rinse vehicle with fresh water. If using
Kärcher Vehicle or All Purpose Cleaner, place
detergent suction tube directly into cleaning
solution and apply to surface at low pressure.
For best results, clean one side of vehicle at
a time and always apply detergent from
bottom to top, do not allow detergent to dry
on surface. If needed, use special Wash
Brush Attachment to remove stubborn dirt.
Rinse at high pressure in a sweeping motion
keeping the spray nozzle approximately 6-8
inches from the cleaning surface (distance
should increase when rinsing pin-striping or
other sensitive surfaces). Always clean from
top to bottom and from left to right. For best
results, wipe surface dry with a chamois or
soft dry cloth.
Caution: Do not use the rotary spray wand
on vehicles as it may cause damage.

Summary of Contents for K 3.78

Page 1: ...ents 7 Shut Down and Clean Up 8 Taking a Break 8 Winterizing and Long Term Storage 8 Cleaning Tips 9 10 Optional Cleaning Accessories 10 Troubleshooting 11 12 Specifications Operating pressure max 1600 PSI Water volume 1 6 GPM Voltage 120 V Amp draw 14 AMPS Manual Part No 5 961 216 0 12 03 In USA call 1 800 537 4129 or visit our website www karcher usa com Part No 1 423 953 0 K 3 78 M ...

Page 2: ... turned on Never use hot water OVERVIEW NEVER Item Description Item Description Item Description Item Description Item Description 1 Power cord with Ground Fault Circuit Interrupter GFCI 2 Triggergun 3 Trigger gun safety lock 4 High pressure hose 5 Water inlet with filter not shown 6 Transport handle 7 Power cord holder 8 Detergent suction tube with filter 9 High pressure outlet 10 On Off switch 1...

Page 3: ... from heat and sharp edges Always disconnect the extension cord from the receptacle before disconnecting the product from the extension cord If you are using an extension cord it should always be completely unwound from the cable drum Ground Fault Circuit Interrupter GFCI Protection This product is supplied with a Ground Fault Circuit Interrupter GFCI built into the power cord plug This device pro...

Page 4: ...not exceed 104 F 40 C Step 1 IMPORTANT PRECAUTIONS continued PRECAUTIONS Never use the pressure washer to draw in water contaminated with solvents e g paint thinner gasoline oil etc Always prevent debris from being drawn into the unit by using a clean water source Save these instructions Step 2 Pull out the locking slide from the right side of the trigger gun handle and insert the small end of the...

Page 5: ...ly if the trigger of the gun is pulled and shuts off when the trigger is released Step 2 Insert the spray wand of your choice into the trigger gun Press in against the spring tension and twist into the locked position Step 1 Connect the high pressure hose to the high pressure outlet Step 5 Unlock the lock of the trigger gun A Trigger the gun B to eliminate trapped air wait for a steady flow of wat...

Page 6: ...or maximum dirt cutting action effectively increasing cleaning performance up to 50 This wand combines the cleaning performance of a 0º pencil jet with the surface coverage of a wide angle nozzle Not recommended for soft materials siding painted surfaces decks or autos Rotary spray wand Warning TO AVOID SERIOUS INJURY NEVER POINT SPRAY NOZZLE AT YOURSELF OTHER PERSONS OR ANIMALS Note The actual ap...

Page 7: ... mixed with water Apply detergent to work area Do not allow detergent to dry on surface Step 2 Fill a container with Kärcher detergent Place the filter end of detergent suction tube into the container Caution Never use Bleach Chlorine products and other corrosive chemicals Liquids containing solvents i e paint thinner gasoline oils Trisodium phosphate products Ammonia products Acid based products ...

Page 8: ...ow pressure for one minute Step 2 Turn the switch to off O position and unplug cord from outlet Step 3 Turn off the water source Step 4 Press trigger to release water pressure Step 5 Disconnect the garden hose from the water inlet on the unit Step 2 Turn pressure washer to off O position WINTERIZING AND LONG TERM STORAGE TAKING A BREAK five minutes or more 4 Store the machine and accessories in a ...

Page 9: ...n sweeping motion keeping the spray nozzle approximately 6 inches from the cleaning surface Caution Do not use rotary spray wand on siding as it may cause damage CLEANING TIPS Cement Patios Brick and Stone with or without detergent Pre rinse cleaning surface with fresh water If using Kärcher Deck and Patio or All Purpose Cleaner place detergent suction tube directly into cleaning solution and appl...

Page 10: ...G TIPS continued into cleaning solution and apply to surface at low pressure Allow Kärcher All Purpose Cleaner to remain on surface 1 3 minutes Do not allow detergent to dry on surface If needed use special Wash Brush Attachment to remove stubborn dirt Rinse at high pressure in a sweeping motion keeping the spray nozzle approximately 3 6 inches from the cleaning surface For best results clean from...

Page 11: ...ged Discharge nozzle is obstructed Calcified gun hose or spray wand Solution Turn switch to the ON I position Plug in power cord Replace extension cord with either a 25 ft 12 3 gauge cord or a 50 ft 10 3 gauge cord Try a different outlet Reset breaker power supply or ground fault circuit interrupter Replace with a 3 4 inch garden hose Check garden hose for kinks leaks and blockage Open water sourc...

Page 12: ... hotline and order repair kit part no 2 883 111 0 Check that hoses and fittings are air tight Turn off machine and purge pump by squeezing trigger gun until a steady flow of water emerges through the nozzle Check that all fittings are tight Call service center Call service center Symptom No detergent Gardenhose connectionleaks Spray wand leaks Pump is noisy Water leaks from pump up to 10 drops per...

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