When it comes to power tools, DEWALT is a name that inspires trust and reliability. For woodworking enthusiasts and professionals, the DEWALT 20V circular saw is a familiar and essential companion for a wide range of cutting tasks.
However, like any tool, it can encounter dewalt 20v circular saw not working issue. In this comprehensive guide, we’ll explore common Dewalt circular saw 20v problems and provide solutions to ensure it operates at its full potential.
First things first:
Starting Challenges: If you’ve just bought a Dewalt circular saw and are having problems, it’s best to either return it or carefully read the manual. Sometimes, people return products without realizing that the issue might be due to not fully understanding the manual. If you believe the problem is with the circular saw, it’s recommended to use the warranty (if applicable) after the return period is over.
Later Issues: Every product has a limited lifespan, including circular saws. With my experience in this area, I know how companies make products to last a certain amount of time.
Usually, a Dewalt 20v circular saw lasts about a year, and problems can come up as early as 7 months after purchase. If you’ve been using your saw for this long, it’s a good idea to think about getting a new circular saw known for being more durable.
Dewalt Circular Saw 20v Problems:
Before delving into dewalt 20v circular saw problems, let’s get to know the DEWALT 20V circular saw a bit better.
This cordless powerhouse is celebrated for its portability and cutting precision. Powered by a 20-volt lithium-ion battery, it offers mobility without the hassle of cords, making it ideal for both on-site and workshop use. Its high-performance motor and sharp blades make it a versatile tool for cutting through various materials, from wood to metal.
Now, here are the causes and solutions for Dewalt 20v circular saw issues.
1. Not Turning On:
If your Dewalt 20v circular saw not turning on when you press the switch button, and there’s no movement or sound from the motor, you might be facing an issue.
The switch, which is responsible for turning the motor on and off, may need to be replaced if it doesn’t engage the motor when you insert the safety key. To check the switch, you can use a multimeter. A working switch will produce a tone on the multimeter, showing that it’s functioning properly. If there’s no tone, it’s recommended to replace the old switch with a new one.
Examine the power supply cord for any signs of disconnected wires or damage. If there are loose wires, reconnect them properly. If the cord is damaged, it’s crucial to replace it. However, the replacement of the power supply cord should be done by the manufacturer to avoid potential safety risks.
2. Not Spinning:
If you own a Dewalt 20v circular saw, the first thing to check is the battery. A dead or improperly inserted battery could be the reason why your saw isn’t working. To fix this problem, follow these steps:
- Make sure the battery is fully charged.
- Check if the battery is correctly inserted into the saw.
- If the battery is dead, try recharging it. It’s important to regularly charge your batteries to avoid such problems in the future. Cordless saws are very convenient, but a dead battery can cause issues if not maintained properly.
Another possible reason for the Black and Decker circular saw not spinning correctly could be related to the blade lock. If you’re experiencing spinning issues, check for this. Ensure that the blade guard is not blocking or catching the blade in any way. If these issues are not clear, it’s recommended to return the circular saw for further evaluation or replacement.
3. Frequent Stopping:
Frequent stopping during operation can be caused by factors such as a low battery charge, a dull blade, or overloading the saw. But these are casues only in few cases, the main cause is overheating of saw. However you can read a detailed article to fix this issue.
Solutions: Keep your battery fully charged, use a sharp blade, and adhere to the saw’s cutting capacity to prevent overloading. Regular maintenance, including cleaning and lubrication, can also address this issue.
Related: Dewalt Circular Saw Brake Not Working
4. Inaccurate Cuts:
Inaccurate cuts may result from a misaligned blade or a loose baseplate. Ensure the blade is correctly aligned and tighten any loose components. Regularly calibrate your saw for precise cuts.
5. Excessive Vibration:
Vibration issues can arise from an unbalanced blade, loose parts, or an incorrect blade type. Balance the blade, tighten all components, and ensure you’re using the right blade for the material you’re cutting.
6. Battery Drainage:
Rapid battery drainage can occur due to heavy usage or a worn-out battery. Consider investing in high-capacity batteries for longer operation, and monitor your battery’s health. Replace it when it no longer holds a charge effectively.
7. Blade Wobble:
When the blade wobbles noticeably as it comes to a stop, it can lead to imprecise cuts.
As time passes, saw blades can become warped due to mishandling, extensive use, or the heat generated by friction with the material being cut. This warping can cause the blade to wobble, resulting in inaccurate cuts or excessive binding. To fix this issue, you can replace the blade by removing the attachment and inserting a new one, following the blade replacement guide.
If the blade isn’t warped, the likely culprit for the wobble is worn bearings for the support shaft. Worn bearings can produce a grinding sound when the saw is turned off or slowing down, along with inaccurate cuts and binding. To address this problem, replace the bearings by removing the blade guards and the blade assembly apparatus, following the bearing replacement guide.
Similar problems with blade warping or worn bearings can stem from a faulty armature or blade spindle. If the armature is damaged, it’s advisable to purchase a new circular saw as a solution.
8. Sparks from Motor:
If sparks are coming from the motor while using the saw, and the saw’s speed and power are reduced, there could be a couple of issues.
Carbon brushes, found in many handheld tools, wear down with regular use and need replacement. When these brushes wear out completely, they can cause sparks in the motor. The only fix for worn-out carbon brushes is to replace them with new ones.
A burnt commutator can occur when cutting through tough materials or using a dull blade. This creates a burn or black mark on the commutator, leading to sparks during tool use. One possible solution for a burnt commutator is to use 1000 grit sandpaper to try and remove the burn by sanding it off. If the sandpaper doesn’t eliminate the burn, you’ll need to replace the commutator.
Preventive Measures for a Smooth Operation:
To ensure your DEWALT 20V circular saw functions at its full potential, follow these preventive measures:
Regularly inspect and maintain your saw, including cleaning, lubrication, and tightening loose components.
- Keep your battery charged, and invest in high-capacity batteries for longer operation.
- Use the correct blade type for your cutting needs, and replace dull or damaged blades promptly.
- Adhere to the saw’s cutting capacity and avoid overloading it with materials beyond its capabilities.
- Calibrate your saw regularly to maintain cutting precision.
Conclusion:
The DEWALT 20V circular saw is a powerful and versatile tool, but it can face various challenges. By understanding common issues and implementing preventive measures, you can maximize its potential, ensuring a smooth and efficient woodworking experience. With proper maintenance and attention to detail, your DEWALT 20V circular saw will remain a reliable and indispensable addition to your toolkit.