Kärcher K 3.78 Operator'S Manual Download | Manualshive

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High Pressure
Washer Operator
Manual

Overview .......................................... 2
Important Precautions ................ 3 - 4
Assembly Instructions ..................... 4
Operating Instructions ..................... 5
GFCI Instructions ............................ 6
Using the Accessories .................... 6
Working with Detergents .................. 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

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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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