1. Introduction
Thank you for choosing the DocSmart Mini Chainsaw Electric Cordless. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new tool. Please read it thoroughly before first use and keep it for future reference.
The DocSmart Mini Chainsaw is a versatile, battery-powered tool designed for light-duty wood cutting, branch trimming, bush pruning, and general garden maintenance. Its compact and cordless design offers convenience and ease of use for various tasks around your home and garden.
2. Safety Instructions
WARNING: Always wear appropriate personal protective equipment (PPE) including safety goggles, gloves, and hearing protection when operating the chainsaw.
- Accidental Activation Prevention: The chainsaw is equipped with a safety lock mechanism to prevent unintentional starting. Always engage the safety lock when the tool is not in use.
- Kickback Protection: The safety baffle helps prevent wood chips and debris from splashing towards the user.
- Secure Grip: Utilize the non-slip front handle to maintain a firm and controlled grip on the chainsaw during operation.
- Eye Protection: Always wear the provided safety goggles to protect your eyes from flying debris.
- Hand Protection: Wear protective gloves to safeguard your hands during operation and handling.
- Work Area: Ensure your work area is clear of obstructions and bystanders. Maintain a stable footing.
- Battery Safety: Use only the specified batteries and charger. Do not expose batteries to extreme temperatures or moisture.
3. Package Contents
Your DocSmart Mini Chainsaw package includes the following items:
- 1x Mini Chainsaw (with 8-inch chain and 8-inch guide bar pre-installed)
- 2x 4000mAh Lithium-ion Batteries
- 1x 6-inch Chain
- 1x 6-inch Guide Bar
- 1x Charger
- 1x Pair of Gloves
- 1x Screwdriver
- 1x Pair of Safety Goggles
- 1x Cleaning Brush
- 1x Chain Sharpener File
- 1x Hard Carrying Case

Image: Complete package contents including the chainsaw, batteries, charger, extra chain and bar, safety gear, and tools.
4. Setup
4.1. Battery Charging
Before first use, fully charge both batteries. The charger indicates charging status with a red light and full charge with a green light.

Image: A battery being charged with the charger showing a red light for charging and a green light for fully charged.
Video: Demonstrates how to connect the charger to the battery and plug it into a power outlet. Shows the red indicator light for charging and the green light for a fully charged battery.
4.2. Chain and Guide Bar Installation/Adjustment
Your chainsaw comes with an 8-inch chain and guide bar pre-installed. A 6-inch chain and guide bar are also included for different tasks. To change or adjust the chain:
- Loosen the two nuts on the side cover using the provided screwdriver.
- Adjust the chain tension by turning the knob. Turn clockwise to tighten, counter-clockwise to loosen. The chain should be snug but still able to move freely.
- Once tension is set, tighten the two nuts securely.

Image: Illustration showing the chainsaw with both 6-inch and 8-inch guide bars, highlighting the 2-in-1 design for versatility.

Image: Close-up of the chainsaw showing the nuts to loosen and the knob to turn for quick chain tension adjustment.
4.3. Oil Filling (Auto Oiler System)
The chainsaw features an auto-lubrication system. Ensure the oil tank is filled before operation.
- Pour bar and chain oil (not included) into the oil tank (up to 30ml).
- Tighten the oil cap promptly to prevent leakage.
- Squeeze the bulb a few times to prime the system.
- Start the chainsaw briefly to ensure the oil is evenly lubricating the chain.

Image: Illustration demonstrating how to pour oil into the oil tank and prime the auto lubrication system by squeezing the bulb.
4.4. Attaching the Front Handle
For enhanced control and grip, especially during heavier cutting tasks, attach the auxiliary front handle.
- Screw the front handle onto the designated mounting point on the chainsaw.
- Ensure it is securely fastened before operation.

Image: Shows the ergonomic main handle and the added front handle, illustrating how it provides a firmer grip for cutting.
5. Operating Instructions
5.1. Powering On/Off
To operate the chainsaw, you must first disengage the safety lock.
- Press the safety lock button located near the trigger.
- While holding the safety lock, press the switch button (trigger) to start the chainsaw.
- Release the switch button to turn off the chainsaw. The safety lock will automatically re-engage.

Image: Close-up view of the chainsaw handle, clearly indicating the safety lock button and the main switch button (trigger).
5.2. Cutting Techniques
The DocSmart Mini Chainsaw is ideal for trimming tree branches, cutting small logs, and general yard maintenance.
- Branch Trimming: For branches up to 6-8 inches in diameter, position the chainsaw firmly against the branch. Apply steady pressure and allow the saw to do the work.
- Wood Cutting: For cutting wood, ensure the workpiece is stable. Use a smooth, controlled motion.
- Brushless Motor: The 1500W brushless motor provides efficient cutting at 26 ft/s, capable of cutting 6-inch branches in approximately 8 seconds.

Image: A person using the mini chainsaw to trim branches during yard maintenance, demonstrating its lightweight and portability for precise cuts.

Image: A mini chainsaw actively cutting through a piece of wood, showcasing its powerful brushless motor and sharp cutting blades.
6. Maintenance
6.1. Chain Sharpening
Regular sharpening ensures optimal cutting performance. Use the included sharpener file to maintain the chain's sharpness.
6.2. Lubrication
Periodically check the oil level in the auto-oiler system and refill as needed to ensure continuous lubrication of the chain during operation. This extends the life of the chain and guide bar.
6.3. Cleaning
After each use, clean the chainsaw thoroughly. Use the provided cleaning brush to remove sawdust, debris, and resin from the chain, guide bar, and motor housing. Ensure the battery is removed before cleaning.

Image: Diagram illustrating the air cooling system of the mini cordless chainsaw, which helps reduce heat and maintain performance.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Chainsaw does not start | Battery not charged; Safety lock engaged; Battery not properly inserted | Charge battery; Disengage safety lock; Reinsert battery securely |
| Poor cutting performance | Dull chain; Incorrect chain tension; Insufficient lubrication | Sharpen chain; Adjust chain tension; Refill oil tank and prime auto-oiler |
| Chain stops during operation | Overload; Low battery; Chain binding | Reduce cutting pressure; Replace/recharge battery; Check for chain binding and clear obstructions |
| Oil leakage | Oil cap not tightened; Chainsaw stored improperly | Ensure oil cap is tight; Store chainsaw horizontally or with oil tank empty |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | DocSmart |
| Model Number | CS08-B4, CS080 |
| Power Source | Battery Powered |
| Motor Type | Brushless Motor |
| Horsepower | 1500 Watts |
| Chain Length | 8 Inches (interchangeable with 6 Inches) |
| Chain Speed | 26 FT/S |
| Battery Capacity | 2x 4000mAh (8000mAh total) |
| Charging Time | Approx. 4 hours per battery |
| Runtime per Battery | Up to 60 minutes |
| Product Dimensions (L x W x H) | 16.74" x 13.55" x 4.73" |
| Weight | 3.46 lbs (without battery) |
| Auto Oiler System | Yes |
9. Warranty and Support
For warranty information, technical support, or any questions regarding your DocSmart Mini Chainsaw, please contact DocSmart customer service:
- Email: support@docsmart.net
- Phone: 1-866-986-3636
Please have your model number (CS08-B4 or CS080) and purchase information ready when contacting support.