Power tools detail: electric chain saw

Electric Chain Saw Electric chain saw is mainly used for cutting wood and other work. There are two kinds of electric chain saws: adjustable type and non-adjustable type.

Precautions for using an electric chain saw
1. Saw chain tension adjustment:
- The tension of the saw chain is crucial to the cutting effect and the life of the saw chain. The tension of the saw chain can be adjusted using the included tool.
- Turning the adjusting screw to the right increases the tension and to the left decreases it.
- The appropriate tension can be judged by lifting the saw chain on the guide plate and checking the gap between the saw chain and the guide plate, generally 0.5 ~ 1.0mm is appropriate.

2. Protective power switch:
- Electric chain saws are usually equipped with a protective power switch to prevent misoperation.
- To start the electric chain saw, press the protection button and pull the power switch trigger at the same time.

3. Saw chain lubrication:
Since the saw chain will generate friction heat when sliding at high speeds, proper tension and adequate lubrication are very important to extend the life of the saw chain.
- For hand-pumped oil type electric chain saws, it is recommended to press the oil button 4 to 5 times every 10 minutes for lubrication when sawing continuously.

4. Personal Protective Equipment:
- When using an electric chain saw, avoid wearing large clothes or accessories to prevent getting involved in moving parts.
- When working outdoors, wear rubber gloves, anti-skid boots, hair guard (long hair), protective glasses, safety boots, tight clothing, protective gloves, anti-vibration device and helmet.

5. Preparation before cutting:
- Before cutting, remove dirt, stones, loose bark, nails, wire and other debris from the tree to avoid damaging the saw chain or causing accidents.

Replacement of main parts of electric chain saw
1. Sprocket replacement Replacement sprocket is an important link in the maintenance of the electric chain saw, the following are the steps to replace the sprocket:
- Use the pliers: Use the pliers to firmly clamp the sprocket part to ensure that the sprocket does not turn or move when loosening the nut.
- Unscrew the reverse hex nut: The sprocket is usually secured by a reverse (left-turned) hex nut. Use a suitable wrench or tool to unscrew the nut.
- Remove the old sprocket: Once the nut is unscrewed, you can remove the old sprocket.
- Install the new sprocket: Place the new sprocket in place and secure it with the new hexagon nut. Make sure the nut is tight, but also be careful not to tighten it too much, so as not to cause deformation or damage to the sprocket.
- Check chain tension: After replacing the sprocket, check and adjust the tension of the saw chain to ensure its correct operation.

2. The correct installation and adjustment of the saw chain The correct installation and adjustment of the saw chain is crucial to the performance of the electric chain saw:
- Blade and direction of operation: The proper installation of the saw chain is to ensure that the blade of the right tooth (cutter) and the left tooth (chip scraping tooth) is in the same direction of operation. This ensures that the chainsaw cuts with the highest efficiency.
- Adjustment method: When adjusting the saw chain, it can be judged according to the compression of the guide spring. If the spring compression is too much or too little, it may affect the operating efficiency and life of the saw chain.
- Check the operation of the saw chain: start the electric chain saw and observe the operation of the saw chain to ensure that the saw chain is smooth and without abnormal noise.
- Regular inspection and maintenance: Regularly check the wear of the saw chain and make necessary adjustments or replacements to maintain the best performance of the electric chain saw.

When performing these operations, it is important to follow the instruction manual and safety guidelines for the electric chain saw to ensure safe and correct operation. If you are not sure how to perform these maintenance tasks, it is recommended to contact a professional repairman.