Important Safety Warnings
WARNING! Read and understand all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury. Save all warnings and instructions for future reference.
1. Work Area Safety
- Keep work area clean and well lit. Cluttered or dark areas invite accidents.
- Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes.
- Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
2. Electrical Safety
- Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools.
- Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators.
- Do not expose power tools to rain or wet conditions.
- Do not abuse the cord. Keep cord away from heat, oil, sharp edges or moving parts.
- When operating a power tool outdoors, use an extension cord suitable for outdoor use.
- If operating a power tool in a damp location, use a residual current device (RCD) protected supply.
3. Personal Safety
- Stay alert, watch what you are doing and use common sense. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication.
- Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection should be used.
- Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack.
- Remove any adjusting key or wrench before turning the power tool on.
- Do not overreach. Keep proper footing and balance at all times.
- Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from moving parts.
4. Power Tool Use and Care
- Do not force the power tool. Use the correct power tool for your application.
- Do not use the power tool if the switch does not turn it on and off.
- Disconnect the plug from the power source and/or the battery pack before making any adjustments, changing accessories, or storing power tools.
- Store idle power tools out of the reach of children.
- Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool's operation.
- Keep cutting tools sharp and clean.
- Use the power tool and accessories in accordance with these instructions.
- Children should be supervised to ensure that they do not play with the device.
5. Battery Tool Use and Care
- Recharge only with the charger specified by the manufacturer.
- Do not open the battery.
- Protect the battery from heat, such as continuous strong sunlight, fire, water and humidity.
- Use power tools only with specifically designated battery packs.
- When the battery pack is not in use, keep it away from other metal objects that can make a connection from one terminal to another.
- Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, seek medical help.
CAUTION! RISK OF EXPLOSION! Never charge non-rechargeable batteries! Protect the rechargeable battery from heat, for example from continuous exposure to sunlight, fire, water, and moisture. There is a risk of explosion.
Safety Warnings for Charger
- Do not allow any liquid to come into contact with the charger.
- Do not place tools or chargers near water.
- Do not spill liquid of any kind on the tool or charger.
- The most suitable temperatures to charge the battery pack are between 68°F -77°F (20°C - 25°C). During charging, batteries must be placed in a well-ventilated area.
- The appliance is not to be used by persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless supervised.
- Children must be supervised not to play with the appliance.
- Do not recharge non-rechargeable batteries!
Product Overview
The SEESII 6-inch Cordless Mini Chainsaw is a lightweight, handheld electric power chain saw designed for efficient wood cutting, tree trimming, and gardening tasks. Its cordless design offers portability and ease of use for various outdoor applications.

Figure 1: SEESII 6-inch Cordless Mini Chainsaw with included accessories.
Video 1: Demonstration of the SEESII Mini Chainsaw in various cutting tasks including bamboo, tree pruning, and log cutting.
Specifications
Chainsaw Specifications
| Feature | Detail |
|---|---|
| Max. Cutting Diameter | 140mm (5.5 inches) |
| Guide Plate Length | 6 Inch |
| Weight (without battery) | 1.19 KG (2.62 lbs) |
| Motor Type | Powerful Copper Motor |
| Cutting Speed | Approx. 16.4 ft/s (5 m/s) |
| Application | Wood Saw, Tree Trimming, Pruning |
| Use | Home DIY |
| Design | Handheld, Movable, Lightweight |

Figure 2: Powerful Copper Motor for efficient cutting.
Battery Pack Specifications
| Feature | Detail |
|---|---|
| Battery Pack Type | Li-Ion |
| Voltage | 21V |
| Capacity | 2000 mAh (each battery) |
| Charging Time | Approx. 2 hours |
| Working Time | 15-25 min (per battery, depending on load) |
| Charger Input Voltage | 100V - 240V AC |
| Charger Input Frequency | 50/60Hz |
| Battery Features | Self-overload and temperature protection, long lifespan |

Figure 3: Upgraded Battery with security protection and long lifespan.
Setup and Assembly
Only insert the rechargeable battery once the device is completely assembled. If the device is switched on accidentally, there is a danger of injury.
Components Overview
The chainsaw consists of a Protective Baffle, Power Switch, Guide Plate, Chain, Safety Button, and Battery Pack connection point.
1. Removing the Chain (if needed)
- Loosen the compression button on the side of the chainsaw.
- Remove the side cover.
- Carefully remove the guide plate and the chain.
2. Installing the Chain
Pay attention to the direction of the cutting tooth when installing the chain.
- Use a screwdriver to move the pin on the chainsaw body to its innermost position.
- Align the pin holes on the guide plate with the corresponding pins on the chainsaw body and install the guide plate.
- Carefully place the chain around the guide plate and the drive sprocket, ensuring the cutting teeth are facing the correct direction (usually forward, away from the handle).
3. Adjusting Chain Tightness
New chains will stretch during initial use. Check and adjust tension frequently. A loose chain can derail and cause rapid wear.
- Loosen the nuts on the chain cover slightly.
- Adjust the chain tension with a screwdriver. Twist the adjusting screw clockwise to tighten the chain, and counterclockwise to loosen it.
- Check for proper tension: when you lift an individual link out of the bar, there should be a 2-3 mm gap between the chain and the guide bar.
- Once the tension is correct, tighten the nuts on the chain cover securely.
4. Installing the Battery
- Ensure the exterior of the battery is clean and dry.
- Align the battery with the base of the chainsaw, matching the slots and inserts.
- Push the battery firmly into place until it clicks.
5. Removing the Battery
- Press the battery unlock button.
- Pull the battery out of the chainsaw.
6. Charging the Battery
The chainsaw comes with a battery charger. Before first use, fully charge the battery. Before charging, ensure the battery surface is clean and dry.
- Connect the charger to a power outlet and the charging jack on the battery.
- The indicator light on the charger will show:
- Red: Battery is charging.
- Green: Charging is completed.
- Once fully charged, remove the charger plug from the outlet and disconnect the battery from the charger.
- For long-term storage, keep the battery in a charged condition and recharge at least once every 3 months.
Operating Instructions
Cutting Skills and Safety
- When the device is running, keep your other hand at least 15cm away from the cutting area of the blade. Never put your hand into the knife edge.
- To ensure the best service life of the chain saw, do not overload the equipment.
- Do not cut branches with a diameter of more than 140mm (5.5 inches) to prevent the chain from getting stuck.
- To protect the battery pack in cold or wet weather, place it under waterproof clothing.
- Always unplug the battery pack after cutting is completed and before any adjustments or maintenance.
- Do not use this equipment on rainy days or in wet conditions.

Figure 4: Chainsaw in various cutting applications.
Maintenance
Before cleaning and maintenance, always switch off the machine and remove the battery pack from the machine.
General Cleaning
- Clean the chain carefully after each use.
- Wipe the chain with lubricating oil and spray with metal protection spray to prevent rust and ensure smooth operation.
- Do not spray the equipment with water or immerse it in water. This may cause electric shock and damage the tool.
- Clean the machine casings regularly with a soft cloth, preferably after each use. Keep the ventilator, motor room, and equipment handle clean and free of debris.
- Remove very persistent dirt using a soft cloth moistened with soapsuds.
- Do not use any solvents such as gasoline, alcohol, ammonia, etc. These chemicals will damage the synthetic components of the chainsaw.
Grinding the Chain Saw
To maintain optimal cutting performance, keep the saw teeth sharp and grind them correctly. Use a 5/32" (4.0mm) file to sharpen the chain.
- Side Tooth Angle: Ideal when the upper tooth angle is 30 degrees. Frustrate the side teeth to 85 degrees.
- Upper Grinding Angle: If the upper and side teeth are ground and frustrated correctly, the upper grinding angle should automatically become 60 degrees.
- When filing, push the file in the direction indicated by the arrow, being careful not to touch the blade with the file.
- After the chain has been filed two or three times, the tooth target may need to be filed slightly lower (approx. 0.5 mm lower than the tooth tip) to maintain proper depth.
Troubleshooting
For any problems you cannot solve, please feel free to contact our after-sales mail support@seesiius.com.
| Malfunction Status | Cause | Action |
|---|---|---|
| Motor stops, chainsaw won't start | Without electricity | Check whether the battery pack has power |
| Motor overheat protection (>120°C) | Keep the chainsaw in shade for 30-60 minutes before using it again | |
| Battery overheat protection (>70°C) | Keep the battery in shade for 30-60 minutes before using it again | |
| Chainsaw stuck when cutting | Low battery | Fully charge the battery before using it |
| Insufficient lubrication of chain & bar | Add chain & bar oil | |
| Unable to charge | Battery charging protection (>45°C) | Keep the battery in shade for 30-60 minutes before using it again |
| Charger keeps green light | Battery charging protection (>45°C) | Keep the battery in shade for 30-60 minutes before using it again |
| Inefficient saw cutting | Blunt chain | Use a 5/32" (4.0mm) file to sharpen the chain |
| Loose chain | Check chain tightness | |
| Incorrectly chain direction | Check whether the installation direction of the chain is consistent with the instruction | |
| Chain bar overheating | Insufficient lubrication of chain & bar | Add chain & bar oil |
User Tips
- This mini chainsaw is more capable than its size suggests; it can handle significant wood cutting tasks, not just small branches.
- The chainsaw is compatible with aftermarket Makita 18V batteries, which can be a convenient option if you already own such batteries.
- The product comes fully assembled, so you can start using it quickly after charging the batteries.
- Always ensure the chain tension is correct before and during use to prevent derailment and ensure efficient cutting.
- Remember to keep the chain lubricated for optimal performance and longevity.
Warranty and Support
Warranty Policy
Every Seesii tool is thoroughly inspected and tested before leaving the factory. It is warranted to be free of defects from workmanship and materials for a period of ONE YEAR from the date of original purchase.
Should any trouble develop during this one-year period, return the COMPLETE tool to Seesii's Service Centers. If inspection shows the trouble is caused by defective workmanship or material, Seesii will repair (or at our option, replace) without charge.
This Warranty Does Not Apply Where:
- Repairs have been made or attempted by others.
- Repairs are required because of normal wear and tear.
- The tool has been abused, misused, or improperly maintained.
- Alterations have been made to the tool.
Contact Information
For after-sales support, questions, or troubleshooting, please contact us:
- Email: support@seesiius.com
- Facebook: @SeeSiiOfficial
- Instagram: @seesii_official
- YouTube: @SeesiiOfficial