21v brushless lithium battery electric chain saw 8-inch handheld small logging pruning electric chain saw 21V 无刷锂电电链锯 8 寸手持小型伐木修枝电动链锯

1. Product Features

1. This brushless lithium battery chainsaw features a high-performance brushless motor, offering strong power output, stable chain speed, and high efficiency in logging and pruning operations.
2. No tool required for installation, removal, and adjustment of the knob; chain tension adjustment and guide plate loading/unloading can be completed without additional tools, making on-site tuning convenient.
3. Equipped with a safety lock button to prevent accidental activation and potential injuries; features an automatic oil pumping system with chain lubrication, reducing the need for manual refilling.
4. The handguard design prevents scratches from wood chips and branch debris on the hands during work, enhancing operational safety.
5. The body is lightweight, allowing operation with a single hand grip, suitable for various tasks such as tree pruning and small wood cutting.
6. Wireless lithium battery design eliminates the need for power cords, allowing flexible operation in orchards, gardens, and outdoor forests.

2. Product Advantages

1. Compared to brushed chainsaws, brushless motors have less friction loss, lower heat generation, slower chain speed degradation, and a longer overall service life.
2. No tool required for adjustment; replacing the guide plate and adjusting the chain tension on-site can be done without a screwdriver or similar tools, and can be completed quickly by a single person.
3. The automatic oil pump system continuously lubricates the chain and guide plates, reducing dry wear on the chain and extending its service life.
4. The handguard features dual protection with a safety lock, reducing safety risks associated with accidental activation and debris scattering.
5. The device is compact and small, allowing one hand to hold it and insert into positions such as fruit tree canopies and shrubs to trim branches.
6. Modular detachable lithium battery pack, supports alternate replacement of backup batteries, reducing charging wait time.

III. Product Applications

1. Orchard pruning work: trimming branches of fruit trees and economic trees, as well as cutting small saplings.
2. Garden maintenance: trimming garden trees, clearing and cutting dead branches and leaves.
3. Outdoor camping: cutting down firewood in the wild, processing wood for campfires.
4. Woodworking DIY: Cutting small pieces of wood, cutting wood materials.
5. Forestry tending: thinning of small timber, forestry pruning operations.
6. Guide plate specification: 8 inches, suitable for wood with a cutting diameter of up to 15 cm.

4. Target Audience

1. Orchard growers and economic tree care personnel.
2. Staff for landscaping and property maintenance.
3. Outdoor camping enthusiasts, field workers.
4. Woodworking DIY enthusiast.
5. Forestry tending and thinning workers.
6. Farmhouse resorts, garden courtyard maintenance staff.

5. Product Attributes

1. Battery Voltage: DC 21V
2. Battery capacity: 4.0Ah
3. Motor type: Brushless motor
4. Idling speed: 4500 rpm
5. Chain rotation speed: 8 m/s
6. Guide plate specification: 8 inches
7. Lubrication system: Automatic oil pump
8. Adjusting method: Tool-free installation and adjustment
9. Security Configuration: Security lock knob, guard plate
10. Machine net weight: 1.6 kg
11. Battery type: Removable lithium-ion battery pack

6. Usage Instructions

1. Battery installation: Push the fully charged lithium battery pack into the bottom slot of the device, hearing a click sound indicates the battery is securely locked; to remove it, hold the side clip and pull downward.
2. Guide plate chain installation: Open the machine cover, place the chain over the guide plate and sprocket, reinstall the adjustment knob, rotate the knob to adjust the chain tension, and ensure the chain fits tightly on the guide plate without looseness before locking it in place.
3. Check the lubricating oil: Ensure there is sufficient chain lubricating oil in the tank; the automatic pump will lubricate the chains after power on.
4. Power-on procedure: One hand holds the handle tightly, while the other hand supports near the handguard. Pull the trigger to start; wait until the chain reaches a stable speed before touching the wood for cutting.
5. Cutting operation: Keep the saw blade moving smoothly; do not force the machine down. If resistance from hard objects is encountered, move back and forth slowly to prevent the chain from getting stuck.
6. Task completed: Release the trigger and wait for the chain to stop rotating completely; remove the battery and clean the guide plate and the wood debris on the chain.

7. Precautions

1. Students must wear goggles, protective gloves, and work pants to prevent wood chips from injuring others; loose clothing is not allowed during work.
2. It is strictly prohibited to touch the chain with hands while it is in operation; adjustments or cleaning must be carried out only after the machine has been completely stopped.
3. Before cutting, ensure there are no foreign objects such as nails or stones on the wood to prevent the chain from wearing out.
4. Lithium batteries should be kept away from high-temperature sources and open flames. Breaking the battery pack is prohibited; when not in use, remove the batteries and store them in a cool and dry place.
5. After prolonged continuous operation, stop the machine to cool down when the body is significantly hot.
6. This tool must not be used in humid or rainy conditions.
7. The equipment is stored in a location inaccessible to children.
8. Stop the machine immediately for inspection when the chain becomes loose or there is noise from the body, and resume use only after the issue is resolved.