1. Introduction
Thank you for choosing the SEESII C8 Cordless Chainsaw. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your chainsaw. This model features both 8-inch and 6-inch bar options, a powerful brushless motor, and is designed for various cutting tasks in gardening and woodworking.
2. Safety Instructions
Your safety is paramount. Please read and understand all safety warnings and instructions before operating the chainsaw. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Safety Lock Button: The chainsaw is equipped with a circular safety lock button. To start the tool, you must press this button simultaneously with the power switch to prevent accidental activation.
- 120° Protective Baffle: A precisely designed 120° protective baffle is integrated to block wood chips and debris during operation, protecting your eyes and face.
- Wide Handle Guard: The wide handle guard helps prevent wood debris from scattering onto your hands during use.
- Personal Protective Equipment: Always wear the included safety goggles and gloves during operation. Additional protective gear such as hearing protection and sturdy footwear is recommended.
- Work Area: Ensure your work area is clear of obstacles and bystanders. Do not operate the chainsaw in wet conditions or in the presence of flammable liquids or gases.
- Battery Safety: Use only the specified batteries and charger. Do not expose batteries to high temperatures or direct sunlight. Remove the battery when not in use or during maintenance.

Figure 1: Overview of Chainsaw Safety Features
3. Product Components
The SEESII C8 Cordless Chainsaw package includes the following items:
- 8-inch Chainsaw Body ×1
- 2000mAh Battery ×2
- Charging Adapter ×1
- 6-inch Chain ×1
- 6-inch Guide Bar ×1
- Guide Bar Cover ×1
- Gloves ×1 pair
- Safety Goggles ×1
- Oil Bottle ×1 (oil not included)
- Japanese Instruction Manual ×1
- Storage Case ×1

Figure 2: Included Components
4. Setup
4.1. Battery Charging and Installation
- Charge both 2.0Ah lithium-ion batteries using the provided charging adapter. A full charge takes approximately 2.5 hours per battery.
- Once charged, slide a battery into the battery slot on the chainsaw handle until it clicks into place. Ensure it is securely fastened.
- Remove the battery from the charger once fully charged to prolong battery life.

Figure 3: Battery Overview and Capacity
4.2. Chain and Guide Bar Installation
The chainsaw features a tool-less chain tensioning system for easy installation and adjustment.
- Ensure the battery is removed before installation.
- Place the chain around the guide bar, ensuring the cutting teeth are facing the correct direction.
- Align the guide bar and chain with the chainsaw body.
- Use the tool-less adjustment knob to secure the guide bar and adjust the chain tension. The chain should be snug but still able to move freely around the guide bar.
4.3. Oiling the Chain
The chainsaw is equipped with an automatic lubrication system.
- Locate the oil reservoir cap on the chainsaw body.
- Fill the reservoir with appropriate chainsaw bar oil (not included) using the provided oil bottle. Do not overfill.
- The automatic lubrication system will ensure the chain is properly oiled during operation.
5. Operating Instructions
5.1. Basic Operation
- Ensure the battery is fully charged and installed, and the chain is properly tensioned and oiled.
- Grip the chainsaw firmly with both hands.
- To start, press the safety lock button and the power switch simultaneously.
- Release the power switch to stop the chainsaw.
5.2. Cutting Techniques
The 1000W brushless motor allows for efficient cutting of various wood types, including branches, bamboo, and firewood, up to 200mm in diameter.
- Always maintain a stable stance and firm grip.
- Allow the chainsaw to reach full speed before engaging the wood.
- Apply steady, even pressure. Do not force the saw through the material.
- Be aware of kickback, especially when cutting with the tip of the guide bar.

Figure 4: 6-inch and 8-inch Cutting Capabilities
5.3. Using with Extension Pole (Sold Separately)
This chainsaw can be connected to an optional telescopic extension pole (product code B0DPRTHGTW, sold separately) for high-branch pruning. This allows for easy conversion between a handheld chainsaw and a pole saw.

Figure 5: Chainsaw with Extension Pole for High-Branch Pruning
Video 1: An introductory video demonstrating the features and operation of the Seesii 6-inch cordless chainsaw.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your chainsaw.
- Chain Tension Adjustment: Periodically check the chain tension. If the chain is loose, use the tool-less adjustment knob to tighten it. A properly tensioned chain should be snug but still allow for manual movement around the guide bar.
- Cleaning: Clean the chainsaw after every use. Remove the guide bar cover and clean off any sawdust, wood chips, and debris from the chain, guide bar, and motor area. This prevents buildup and ensures smooth operation.
- Oiling System: Regularly check the oil level in the reservoir and refill as needed. The automatic lubrication system helps maintain chain lubrication, but manual checks are important.
- Battery Care: Store batteries in a cool, dry place. Do not leave them on the charger for extended periods after they are fully charged.
7. Troubleshooting
If you encounter issues with your SEESII C8 Cordless Chainsaw, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Chainsaw does not start | Battery not charged or improperly installed; Safety lock not engaged; Power switch not pressed correctly. | Ensure battery is charged and securely installed. Press the safety lock button and power switch simultaneously. |
| Chain is loose or falls off | Chain tension is too low. | Adjust chain tension using the tool-less adjustment knob. Ensure it is snug but still moves freely. |
| Reduced cutting performance | Dull chain; Insufficient lubrication; Battery low. | Replace or sharpen the chain. Check oil reservoir and refill if necessary. Recharge or replace battery. |
| Excessive vibration or noise | Loose chain; Damaged chain or guide bar. | Check and adjust chain tension. Inspect chain and guide bar for damage and replace if needed. |
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Seesii |
| Power Source | Battery Powered |
| Product Weight | 1 kg |
| Product Dimensions (L x W x H) | 32 x 9 x 7 cm |
| Chain Length | 8 inches (also includes 6 inches) |
| Chain Speed | 20 m/s |
| Motor Type | Brushless Motor |
| Battery Capacity | 2000mAh (x2 included) |
| Country of Origin | China |

Figure 6: Brushless Motor Advantages
9. Warranty and Support
The SEESII C8 Cordless Chainsaw comes with a 1-year manufacturer's warranty. Our products undergo strict quality control before shipment. In the unlikely event of a defect, we offer a refund or free replacement.
For any questions or issues regarding the product, please contact our customer support. We aim to respond within 24 hours.
How to Contact Support: Navigate to your 'Order History' and select 'Contact Seller' for assistance.