Karcher K 3.78 Working with Detergents, Always Use Karcher Detergents for Best Results

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WORKING WITH DETERGENTS

To apply detergents you must be operating at low pressure (–).

Step 1 Install the Vario spray wand. Set the Vario spray wand to the low pressure setting (–) by turning the wand collar. The wand must be set in the low pressure (–) position to apply detergents.

Step 2 Fill a container with Kärcher

Step 3 Turn on the pressure washer.

detergent. Place the filter end of detergent

Pull trigger to operate unit: Liquid detergent

suction tube into the container.

is drawn into the unit and mixed with water.

 

Apply detergent to work area. Do not allow

 

detergent to dry on surface.

For best results see Cleaning Tips on pages 9 & 10 for specific information on how to clean different surfaces.

Always Use Karcher Detergents for Best Results.

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:

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In USA call: 1-800-537-4129

or visit our website:

www.karcher-usa.com

The following Karcher detergents are available:

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One Gallon ready to use

• Vehicle Wash

• Degreaser

• All Purpose Cleaner

• House Wash

Deck Wash

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Detergent Concentrate Tablets:

(10 Pack; makes 1 1/4 gallon RTU product)

• All Purpose

• Degreaser

• Deck and patio

• Windows and Siding

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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

These chemicals will harm the unit and will damage the surface being cleaned.

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Contents 78 M Never OverviewGround Fault Circuit Interrupter Gfci Protection Important Precautions Read FirstExtension Cords Assembly Instructions Important PrecautionsWater Supply Cold Water Only Operating Instructions Gfci Instructions Using the AccessoriesAlways Use Karcher Detergents for Best Results Working with DetergentsTaking a BREAK... five minutes or more Shutting Down & CleanupWinterizing and LONG-TERM Storage Cement Patios, Brick and Stone Cleaning TipsDeck Cleaning House SidingPatio & Lawn Furniture Cleaning TipsOptional Cleaning Accessories Barbecue Grills, Outdoor Power Equipment & Gardening ToolsTroubleshooting Troubleshooting

K 3.78 specifications

The Kärcher K 3.78 is a versatile and powerful pressure washer designed for light to medium-duty outdoor cleaning tasks. Renowned for its combination of performance and user-friendliness, it has become a popular choice among homeowners looking to maintain the cleanliness of their vehicles, patios, driveways, and garden furniture.

At the heart of the K 3.78 is its robust motor, which delivers a maximum pressure of 1800 PSI, allowing users to efficiently tackle various grime and dirt challenges. The water flow rate of up to 1.6 GPM ensures that stubborn stains and dirt are effectively washed away, making it suitable for a wide range of applications.

One of the standout features of the K 3.78 is its innovative N-Cor pump, which is designed for durability and longevity. It is resistant to corrosion, ensuring that the pressure washer stands the test of time even with regular use. The K 3.78 also includes a detergent injection system, enabling users to apply cleaning solutions directly through the spray wand, enhancing cleaning efficiency for more challenging stains.

The pressure washer is equipped with a 20-foot high-pressure hose, giving users ample reach while staying mobile. The ergonomic handle and lightweight design further ensure comfort during use, reducing hand fatigue, especially during extended cleaning sessions. Additionally, the integrated on-board storage allows for convenient access and storage of accessories, including nozzles and the detergent bottle.

Speaking of nozzles, the K 3.78 features an adjustable spray wand with multiple settings. This versatility allows users to switch between high-pressure jets for tackling tough dirt and wider spray patterns for rinsing larger areas, all without the need to change out the nozzle.

When it comes to safety, the K 3.78 includes a safety lock mechanism on the trigger gun, preventing accidental activation. The robust construction of the unit ensures stability during operation, reducing the risk of tipping over.

In summary, the Kärcher K 3.78 is an excellent investment for those seeking a reliable pressure washer that balances power and convenience. With its durable construction, versatile cleaning capabilities, and user-friendly design, the K 3.78 makes outdoor cleaning tasks simpler and more efficient, keeping your spaces looking pristine all year round.