1. Introduction
This manual provides essential information for the safe and effective use of your Litheli 30 cm Battery Chainsaw, Model U20CS00-0U220. Please read all instructions carefully before operating the chainsaw to ensure personal safety and optimal performance. Keep this manual for future reference.
2. Important Safety Instructions
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.
2.1 General Chainsaw Safety
- Always wear appropriate personal protective equipment (PPE) including safety glasses, hearing protection, gloves, and sturdy footwear.
- Do not operate the chainsaw when tired, under the influence of drugs, alcohol, or medication.
- Keep children and bystanders at a safe distance (at least 15 meters) from the operating area.
- Inspect the chainsaw before each use for damaged parts, loose fasteners, or any other condition that may affect its safe operation.
- Ensure the work area is clear of obstacles, well-lit, and free from slippery conditions.
2.2 Chainsaw Specific Safety Features
The Litheli Battery Chainsaw is equipped with multiple safety features:
- Safety Cover: Protects against wood chips and debris.
- Triple Safety Switch: Prevents accidental starting of the chainsaw.
- One-Button Brake: Stops the chain within 0.2 seconds for immediate safety.
- Protective Cover: Guards against injury and protects the saw blade.

Figure 1: Illustration of the chainsaw's triple safety protection features.
3. Package Contents
Verify that all items are present upon unpacking:
- Litheli Battery Chainsaw (Main Unit)
- Guide Bar (30 cm / 12 inches)
- Saw Chain
- 2 x 10,000 mAh Lithium-Ion Batteries
- Battery Charger (USB-A and USB-C compatible)
- User Manual (This document)

Figure 2: Contents typically included with the Litheli Battery Chainsaw.
4. Product Components
Familiarize yourself with the main parts of your chainsaw:
- Brushless Motor: Provides efficient and powerful cutting performance with extended lifespan.
- Guide Bar: 30 cm (12 inch) length for various cutting tasks.
- Saw Chain: Designed for fast and clean cuts.
- Automatic Lubrication System: Ensures continuous chain lubrication.
- Oil Tank: 130 ml capacity with a transparent viewing window for easy level checks.
- Tool-Free Adjustment Knob: For quick chain tensioning and replacement.
- Ergonomic Handle: Soft rubber grip for comfortable and secure handling.

Figure 3: Internal view of the brushless motor.

Figure 4: Detail of the automatic lubrication system and oil tank.
5. Assembly and Setup
5.1 Installing the Guide Bar and Chain
- Ensure the battery is removed from the chainsaw.
- Loosen the side cover knob and remove the side cover.
- Place the chain around the sprocket and guide bar, ensuring the cutting edges face the correct direction.
- Fit the guide bar onto the mounting studs and align the chain with the guide bar groove.
- Replace the side cover and lightly tighten the knob.
5.2 Adjusting Chain Tension
The chainsaw features a tool-free adjustment knob for chain tension:
- With the side cover lightly tightened, use the adjustment knob to increase or decrease chain tension.
- The chain should be snug against the guide bar, but still able to be pulled freely by hand. There should be no slack on the underside of the guide bar.
- Once tension is correct, fully tighten the side cover knob.
5.3 Filling the Chain Oil Tank
- Ensure the chainsaw is on a level surface and the battery is removed.
- Unscrew the oil tank cap.
- Fill the tank with appropriate chain lubricant (not included) up to the 'MAX' indicator.
- Replace the cap securely. Monitor the oil level through the transparent viewing window during operation.
5.4 Battery Installation and Charging
The chainsaw uses 10,000 mAh Lithium-Ion batteries.
- To install, slide a charged battery into the battery compartment until it clicks into place.
- To remove, press the battery release button and slide the battery out.
- To charge, connect the battery to the provided charger using the USB-A or USB-C port. The batteries can also function as power banks for other devices.

Figure 5: Illustration of the high-capacity lithium batteries.

Figure 6: The battery's dual USB-A and USB-C charging ports.
6. Operation
6.1 Starting the Chainsaw
- Ensure all safety precautions are followed and PPE is worn.
- Insert a fully charged battery.
- Engage the safety switch (usually a button or lever that needs to be pressed before the trigger).
- Press the trigger to start the chainsaw. The chain will begin to move.
6.2 Cutting Techniques
The chainsaw is designed for quick and clean cuts, capable of up to 100 cuts in a 10 x 10 cm piece of wood per battery charge.
- Always maintain a firm grip with both hands on the chainsaw handles.
- Position yourself securely and maintain balance.
- Allow the chainsaw to reach full speed before making contact with the wood.
- Apply steady, even pressure. Do not force the saw.
- Be aware of kickback potential, especially when cutting with the tip of the guide bar.

Figure 7: Chainsaw in operation, cutting a log.

Figure 8: Chainsaw being used for cutting, emphasizing its lightweight design.
6.3 Stopping the Chainsaw
Release the trigger to stop the chainsaw. The one-button brake will rapidly stop the chain's movement.
7. Maintenance
Regular maintenance ensures the longevity and safe operation of your chainsaw.
7.1 Chain Lubrication
The automatic lubrication system ensures continuous oil flow. Regularly check the oil level through the transparent window and refill as needed with suitable chain oil.
7.2 Chain Sharpening
A sharp chain is crucial for efficient and safe cutting. Sharpen the chain regularly according to manufacturer guidelines or have it professionally sharpened.
7.3 Guide Bar Maintenance
Periodically clean the guide bar groove to remove sawdust and debris. Flip the guide bar regularly to ensure even wear.
7.4 Cleaning
After each use, remove the battery and clean the chainsaw body, guide bar, and chain. Use a brush or compressed air to remove sawdust and debris. Do not use water to clean the motor housing.
7.5 Storage
Store the chainsaw in a dry, secure location, out of reach of children. Ensure the chain is covered with its protective sheath. Remove batteries before long-term storage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chainsaw does not start | Battery not inserted correctly or discharged; Safety switch not engaged; Faulty trigger. | Ensure battery is fully charged and properly inserted; Engage safety switch; Contact customer support if trigger is faulty. |
| Chain does not move or moves slowly | Chain tension too tight; Chain dull or damaged; Low battery charge; Obstruction. | Adjust chain tension; Sharpen or replace chain; Recharge battery; Clear any obstructions. |
| No chain lubrication | Oil tank empty; Oil port clogged; Faulty lubrication system. | Refill oil tank; Clean oil port; Contact customer support. |
| Excessive vibration | Loose components; Damaged chain or guide bar. | Check all fasteners; Inspect and replace damaged chain/guide bar. |
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | U20CS00-0U220 |
| Brand | LiTHELi |
| Guide Bar Length | 30 cm (12 inches) |
| Motor Type | Brushless |
| Motor Power | 600 Watts |
| Chain Speed | 8 m/s |
| Battery Type | Lithium Ion |
| Battery Capacity | 2 x 10,000 mAh (total 20,000 mAh) |
| Oil Tank Capacity | 130 ml |
| Weight (without battery) | Approximately 2.5 kg |
| Product Dimensions (L x W x H) | 34.5 x 23.5 x 23.5 cm |
| UPC | 740907583793 |
10. Warranty and Customer Support
For warranty information, please refer to the warranty card included with your product or visit the official Litheli website. For technical assistance, spare parts, or any other inquiries, please contact Litheli customer support through their official channels.





