Kärcher K 3.78 Operator's Manual
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Kärcher K 3.78 Operator's Manual

Kärcher K 3.78 Operator's Manual

Karcher high pressure washer operator manual
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K 3.78 M
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
Storage ............................................ 8
Cleaning Tips ............................ 9 - 10
Troubleshooting ....................... 11 - 12

Specifications

Operating pressure, max. ... 1600 PSI
Water volume ....................... 1.6 GPM
Voltage ...................................... 120 V
Amp draw ............................ 14 AMPS
In USA call:
1-800-537-4129
or visit our website:
www.karcher-usa.com
Part No. 1.423-953.0
Manual Part No. 5.961-216.0 12/03

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Summary of Contents for Kärcher K 3.78

  • Page 1: Table Of Contents

    K 3.78 M 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 ...

  • Page 2: High Pressure

    Never operate while standing in water. Never touch plug with wet hands. Never let electrical connections rest in water. Never operate pressure washer without the water turned on Never use hot water...

  • Page 3: Important Precautions

    IMPORTANT PRECAUTIONS – Read First! Safety Warnings When using this product, basic precautions should always be followed: • Read all the instructions before using the product. • High pressure jets can be dangerous if subject to misuse. The jet must not be directed at persons, animals, electrical devices, or the machine itself.

  • Page 4: Important Precautions

    Push the locking slide back into the trigger gun to lock the hose in position. • Never use the pressure washer to draw in water contaminated with solvents, e.g. paint thinner, gasoline, oil, etc.

  • Page 5: Operating Instructions

    OPERATING INSTRUCTIONS Step 1 Connect the high pressure hose to the high pressure outlet. Step 3 Connect the garden hose to the water inlet. Step 5 Unlock the lock of the trigger gun (A). Trigger the gun (B) to eliminate trapped air, wait for a steady flow of water to emerge from the spray nozzle.

  • Page 6: Gfci Instructions

    GFCI INSTRUCTIONS Step 1 Step 1 Step 1 Step 1 Step 1 Plug the Ground Fault Circuit Interrupter (GFCI) into a working outlet USING THE ACCESSORIES Vario power spray wand The spray wand allows you to adjust the cleaning pressure. To clean at maximum pressure, the spray wand must be positioned to the high pressure setting (+).

  • Page 7: Working With Detergents

    Karcher biodegradable detergents are specially formulated to protect the environment and your pressure washer. Special formula won’t clog the suction tube filter and will protect the internal parts of the pressure washer for a longer life. For Karcher Detergents, check your retailer or call: In USA call: 1-800-537-4129 or visit our website: www.karcher-usa.com...

  • Page 8: Shut Down And Clean-Up

    Step 4 Press trigger to release water pressure. Step 7 Release trigger (A) and engage gun safety lock (B). O F F O F F Step 2 Turn pressure washer to off (O) position.

  • Page 9: Cleaning Tips

    CLEANING TIPS 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.

  • Page 10: Optional Cleaning Accessories

    • Flexible Spray Wand • Underbody Spray Wand • 4 Piece Extension Wand, 66 inches or visit our website: www.karcher-usa.com 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.

  • Page 11: Troubleshooting

    TROUBLESHOOTING Disconnect the machine from the power source before making any repair. Symptom Cause Motor will not start On/Off switch is in the “OFF” (O) position. Power cord is not plugged in. Extension cord is too long. Extension cord is not proper gauge. Extension cord is damaged.
  • Page 12 Water leaks from pump (up to 10 drops per minute is permissible). Oil Drip. In USA Call: or visit our website: www.karcher-usa.com Cause Detergent suction tube not properly connected to the machine. Detergent is too thick. Filter on detergent suction tube is clogged.

This manual is also suitable for:

K 3.78 m

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