Part No. 1.423-105.0 K 3.97 M High Pressure Washer Operator Manual Overview ... 2 Precautions ... 2-4 Assembly Instructions ... 4-5 Operating Instructions ... 5-6 GFCI Instructions ... 6 Using the Accessories ... 6 Working with Detergents ... 7 Shut Down and Clean-Up ... 8 Taking a Break ...
Model K 3.97 M OVERVIEW Item Description 1. Power cord with Ground Fault Circuit Interrupter (GFCI) 2. Trigger gun 3. Trigger gun safety lock 4. High pressure hose 5. Water inlet with filter and garden hose connector 6. Transport handle 7.
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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.
Step 3 Step 3 • The water supply temperature must not exceed 104°F/40°C. • Never use the pressure washer to draw in water contaminated with solvents, e.g. paint thinners, gasoline, oil, etc. • Always prevent debris from being drawn into the unit by using a clean water source.
ASSEMBLY INSTRUCTIONS – continued Step 4 Step 4 Step 4 Step 4 Step 4 Pull out the locking slide from the right side of the trigger gun handle, and insert the small end of the high pressure hose into place. Push the locking slide back into the trigger gun to lock the hose in position.
Turn Quattro Nozzle to desired setting position. Match symbols above. Step 6 Step 6 Step 6 Step 6 Step 6 Turn on the pressure washer. The motor starts only if the trigger of the gun is pulled and shuts off when the trigger is released. GFCI INSTRUCTIONS Step 1...
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...
CARE AND MAINTENANCE INSTRUCTIONS Cleaning the water inlet filter Pull out the water inlet filter with flat-nose pliers and rinse out in warm water. 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 direct- ly into cleaning solution and apply to surface at low pressure.
TROUBLESHOOTING Disconnect the machine from the power source before making any repair. Symptom Symptom Symptom Symptom Symptom Cause Cause Cause Cause 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.
10 drops per minute is permissible). Oil Drip. If you encounter any additional difficulties not listed, please call our service center for help. Karcher Customer Support USA Cause Detergent suction tube not properly connected to the machine. Detergent is too thick.