1. Introduction
This instruction manual provides essential information for the safe and effective operation, setup, and maintenance of your Kärcher PGS 4-18 18V Battery Chainsaw. Designed for pruning branches and shrubs with a diameter of up to 8 cm, this tool offers cordless convenience and efficient cutting performance. Please read this manual thoroughly before first use and keep it for future reference.
2. Safety Information
WARNING: Read all safety warnings, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury.
- Always wear appropriate personal protective equipment (PPE) including safety glasses, hearing protection, gloves, and sturdy footwear when operating the chainsaw.
- Keep hands and body parts away from the cutting area and the blade.
- Ensure the work area is clear of bystanders, children, and pets.
- Do not operate the chainsaw in wet conditions or in the presence of flammable liquids or gases.
- Use only Kärcher 18V Battery Power batteries and chargers.
- Remove the battery pack before making any adjustments, changing accessories, or storing the tool.
- Maintain a firm grip on the tool with both hands during operation, unless using the removable handle for single-hand operation as intended.
3. Product Overview
The Kärcher PGS 4-18 is a versatile battery-powered chainsaw designed for efficient pruning tasks. Its compact design and ergonomic features make it easy to handle.
Key Components:
- Chainsaw Body
- Saw Blade (Made in Germany)
- Removable Handle
- Battery Support (for 18V Kärcher Battery Power battery, not included)
- Optional Telescopic Extension (sold separately)

Figure 1: Kärcher PGS 4-18 Battery Chainsaw. Note: Battery is not included with the product.

Figure 2: The Kärcher PGS 4-18 with its saw blade and handle assembly.

Figure 3: The Kärcher 18V Battery Power system, compatible with a range of Kärcher tools.
4. Setup
4.1. Blade Installation
The high-quality blade can be replaced quickly and easily without the need for additional tools. Refer to the video for a visual guide.

Figure 4: The saw blade, designed for efficient cutting.
4.2. Handle Attachment
The practical handle can be removed without tools, allowing for secure two-handed or single-handed operation. Ensure it is firmly attached before use.

Figure 5: The removable handle provides a secure grip.

Figure 6: The ergonomic design of the handle ensures comfortable use.
4.3. Battery Insertion
Insert a fully charged Kärcher 18V Battery Power battery into the battery support until it clicks into place. The battery is not included and must be purchased separately.

Figure 7: Kärcher 18V Battery and Charger (sold separately).
4.4. Assembly and Blade Change Video
Video 1: This video demonstrates the assembly of the Kärcher PGS 4-18, including how to attach the handle and change the saw blade.
5. Operating Instructions
5.1. Basic Pruning
With the Kärcher PGS 4-18, you can effortlessly cut branches and twigs up to 8 cm in diameter. Position the saw blade firmly against the branch and activate the tool. Allow the saw to do the work, avoiding excessive force.

Figure 8: Pruning a branch on a sawhorse with the Kärcher PGS 4-18.

Figure 9: Detailed view of the saw blade in action, cutting a branch.
5.2. Using with Telescopic Extension
For reaching higher branches, an optional telescopic extension (not included) can be attached. This accessory allows you to work at heights of up to 3.5 meters, making overhead pruning easier and safer.

Figure 10: Using the Kärcher PGS 4-18 with the optional telescopic extension for high branches.

Figure 11: The telescopic extension, available as an optional accessory.
5.3. Usage Demonstration Video
Video 2: This video demonstrates the Kärcher PGS 4-18 in use for pruning branches, including with the telescopic extension.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Kärcher PGS 4-18.
- Cleaning: After each use, remove any sawdust, debris, and resin from the blade and tool body. Use a damp cloth and mild detergent if necessary. Ensure the tool is dry before storage.
- Blade Care: Inspect the blade for sharpness and damage regularly. A dull blade can reduce efficiency and increase strain on the tool. Replace worn or damaged blades promptly using the tool-free mechanism.
- Battery Storage: Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures. For long-term storage, ensure the battery is partially charged (around 50%).
- General Inspection: Periodically check all screws, nuts, and bolts for tightness. Ensure all moving parts operate smoothly.
7. Troubleshooting
If you encounter issues with your Kärcher PGS 4-18, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not inserted correctly or discharged | Ensure battery is fully inserted. Charge the battery. |
| Poor cutting performance | Dull or damaged blade | Replace the saw blade. |
| Tool stops during operation | Overload or low battery | Reduce cutting pressure. Charge or replace the battery. |
| Excessive vibration | Loose components or damaged blade | Check for loose parts and tighten. Inspect and replace blade if damaged. |
If the problem persists after attempting these solutions, please contact Kärcher customer support.
8. Specifications
Technical data for the Kärcher PGS 4-18 18V Battery Chainsaw:
| Feature | Value |
|---|---|
| Manufacturer | Kärcher |
| Model Number | 1.445-330.0 |
| Product Dimensions | 47.5 x 8.9 x 17.4 cm |
| Weight | 1.4 kg |
| Battery Type | 18V Lithium-ion (not included) |
| Max. Branch Diameter | 8 cm |
| Blade Length | 150 mm |
| Speed | 28 RPM |
| Power Source | Battery Powered |
| Special Features | Tool-free blade replacement |
| Handle Material | Rubber |
| Blade Material | Stainless Steel |
9. Warranty and Support
Kärcher products are manufactured to high-quality standards and come with a manufacturer's warranty. For specific warranty details, registration, or technical support, please refer to the warranty card included with your product or visit the official Kärcher website. You can also contact Kärcher customer service for assistance with any product-related inquiries.
Online Resources: www.karcher.com





