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Model K 390 M plus
High Pressure Washer Operator Manual
Overview ................................................................................... 2
Precautions ............................................................................ 2-4
Assembly Instructions .............................................................. 4
Operating Instructions .............................................................. 5
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
Max. Pressure
Max. Water volume
Voltage
Amp draw
Please keep the original box, packaging and receipt.
Before operating this unit, please read this manual
thoroughly and retain it for future reference.
French ........................... 13
1400 PSI
1.7 GPM
120 V
13 AMPS
5.959-911 / 04.01
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Table of Contents
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Summary of Contents for Kärcher K 390 M plus
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Page 1: Table Of Contents
Model K 390 M plus High Pressure Washer Operator Manual Overview ................... 2 Precautions ................2-4 Assembly Instructions .............. 4 Operating Instructions .............. 5 Using the Accessories .............. 6 Working with Detergents ............7 Shut Down and Clean-Up ............8 Taking a Break ................ -
Page 2: Overview
OVERVIEW High Pressure Washer Machine includes 1 Detergent filter and suction tube 10 Trigger gun safety lock 2 On/Off switch 11 Trigger gun with high pressure hose 3 High pressure outlet 12 Trigger gun holder 4 Water inlet 13 Mobile adapter bracket (qty. 2) 5 Quick connect adapter male 14 Package of 6 screws 6 Quick connect adapter female... -
Page 3: Precautions
IMPORTANT PRECAUTIONS – Read First! Extension Cords Safety Warnings Use a sufficient gauge: When using this product basic precautions Up to 25 ft = 12/2 AWG: should always be followed: 25 to 50 ft =10/2 AWG. • Read all the instructions before using the Use only extension cords that are intended product. -
Page 4: Assembly Instructions
IMPORTANT PRECAUTIONS – continued Water Supply (Cold Water Only) • Water hose must be at least 3/4 inch in • Never use the pressure washer to draw diameter. in water contaminated with solvents, e.g. paint thinners, gasoline, oil, etc. • Flow rate of water supply must not fall below 2 GPM (gallons per minute). -
Page 5: Operating Instructions
OPERATING INSTRUCTIONS Step 1 Step 2 Connect the high pressure hose to the Insert the spray wand of your choice into the unit’s high pressure outlet. trigger gun. Press in against the spring tension (A) and twist into the locked position (B). Step 3 Step 4 Connect garden hose to unit’s water inlet... -
Page 6: Using The Accessories
USING THE ACCESSORIES Wash brush High/low pressure nozzle This nozzle features two positions. The high This brush is ideal for removing stubborn dirt and stains from finished surfaces. Use setting provides a steady powerful 25° high pressure spray pattern, for general with detergents only. -
Page 7: Working With Detergents
WORKING WITH DETERGENTS Kärcher Pressure washers operate at two pressures. The high pressure is used for cleaning, you cannot apply detergents when working at high pressure. To apply detergents you must be operating at low pressure. Step 1 Install the High/Low pressure nozzle. Step 3 Turn on the pressure washer. -
Page 8: Shut Down And Clean-Up
SHUTTING DOWN & CLEAN-UP Step 1 Step 2 Step 3 Step 4 Remove detergent suction Turn the switch to Turn off the water Press trigger to tube from jug and insert off (O) position and source. release water into 1 gallon (5 L) of fresh unplug cord from pressure. -
Page 9: Cleaning Tips
CLEANING TIPS Deck Cleaning Cement Patios, (with or without Karcher Pressure Wash Detergent) Brick and Stone Pre-rinse deck and surrounding area with (with or without detergent) fresh water. If using Pressure Wash, place Pre-rinse cleaning surface with fresh water. detergent suction tube directly into cleaning If using Pressure Wash, place detergent solution and apply to surface at low suction tube directly into cleaning solution... -
Page 10: Optional Cleaning Accessories
CLEANING TIPS – continued Barbecue Grills, Outdoor Patio & Lawn Furniture Power Equipment & (with or without detergent) Pre-rinse furniture and surrounding area Gardening Tools with fresh water. If using Pressure Wash, (with or without detergent) place detergent suction tube directly into Pre-rinse cleaning surface with fresh water. -
Page 11: Troubleshooting
TROUBLESHOOTING Disconnect the machine from the power source before making any repair. Symptom Cause Solution Motor will not start On/Off switch is in the “OFF” (O) Turn switch to the “ON” (I) position position. Power cord is not plugged in. Plug in power cord. - Page 12 TROUBLESHOOTING – continued Symptom Cause Solution No detergent. Detergent suction tube not properly Check connection. connected to the machine. Detergent is too thick. Dilute detergent. Filter on detergent suction tube is Run warm water through filter to clogged. remove debris. Damaged or clogged detergent Remove obstruction or replace suction tube.