The Dewalt DCS391 circular saw is a powerful and versatile tool, widely used by professionals and DIY enthusiasts alike. One of the most critical aspects of maintaining this saw is knowing how to change the blade. A dull or damaged blade can not only affect the performance of the saw but also pose a safety risk. In this article, we will provide a step-by-step guide on how to change the blade on your Dewalt DCS391 circular saw.
Introduction to the Dewalt DCS391 Circular Saw
Before we dive into the process of changing the blade, it’s essential to understand the basics of the Dewalt DCS391 circular saw. The DCS391 is a 20V max circular saw that features a high-torque motor and a 6-1/2″ blade. It’s designed for a variety of applications, including cross-cutting, ripping, and beveling. The saw is also equipped with a locked-off feature, which prevents accidental starts, and a battery gauge, which displays the remaining battery life.
Why Change the Blade on Your Dewalt DCS391 Circular Saw?
Changing the blade on your Dewalt DCS391 circular saw is crucial for several reasons. A dull or damaged blade can lead to:
– Poor cut quality: A dull blade can cause the saw to bind or vibrate, resulting in poor cut quality and potentially damaging the material being cut.
– Reduced saw performance: A damaged or dull blade can put excessive strain on the saw’s motor, reducing its performance and potentially leading to premature wear.
– Safety risks: A damaged or dull blade can be a safety hazard, particularly if it breaks or becomes dislodged during operation.
Gathering the Necessary Tools and Equipment
Before you start changing the blade on your Dewalt DCS391 circular saw, make sure you have the following tools and equipment:
A replacement blade, suitable for your Dewalt DCS391 circular saw
A wrench or Allen key (depending on the type of blade bolt used)
Safety goggles or glasses
A work surface or bench
The Step-by-Step Process of Changing the Blade
Changing the blade on your Dewalt DCS391 circular saw is a relatively straightforward process. However, it’s essential to follow the correct steps to ensure your safety and the longevity of your saw.
Step 1: Prepare the Saw
Before you start changing the blade, make sure the saw is:
– Unplugged or the battery is removed
– Placed on a stable work surface
– Cleared of any debris or dust
Step 2: Remove the Blade Guard
The blade guard is designed to protect you from the spinning blade. To remove it, follow these steps:
– Locate the blade guard latch, usually found on the top or side of the saw
– Release the latch by sliding it or pressing the release button
– Carefully lift the blade guard away from the saw
Step 3: Remove the Blade Bolt
The blade bolt is used to secure the blade to the saw’s arbor. To remove it:
– Locate the blade bolt, usually found in the center of the blade
– Use a wrench or Allen key to loosen the bolt
– Completely remove the bolt and any washer or spacer
Step 4: Remove the Old Blade
With the blade bolt removed, you should be able to:
– Carefully pull the old blade away from the saw’s arbor
– Remove any remaining debris or dust from the arbor and surrounding area
Step 5: Install the New Blade
To install the new blade:
– Align the new blade with the saw’s arbor, making sure the teeth are facing in the correct direction
– Place the new blade onto the arbor, ensuring it’s properly seated
– Replace any washer or spacer, if used
Step 6: Replace the Blade Bolt
To secure the new blade:
– Replace the blade bolt and tighten it by hand
– Use a wrench or Allen key to tighten the bolt in a star pattern to ensure even tightening
Step 7: Replace the Blade Guard
Finally, replace the blade guard by:
– Aligning it with the saw’s body
– Sliding it back into place or pressing the release button to secure it
Tips and Precautions
When changing the blade on your Dewalt DCS391 circular saw, keep the following tips and precautions in mind:
– Always wear safety goggles or glasses to protect your eyes from debris
– Ensure the saw is unplugged or the battery is removed before starting the process
– Use a replacement blade that meets the manufacturer’s specifications
– Avoid over-tightening the blade bolt, as this can damage the saw’s arbor
Conclusion
Changing the blade on your Dewalt DCS391 circular saw is a relatively straightforward process that can be completed with the right tools and knowledge. By following the steps outlined in this guide, you can ensure your saw continues to perform optimally and safely. Remember to always follow the manufacturer’s instructions and take necessary safety precautions when working with power tools. With a new blade installed, you’ll be able to tackle a variety of projects with confidence and precision.
Additional Recommendations
To get the most out of your Dewalt DCS391 circular saw, consider the following:
– Regularly clean and maintain the saw to prevent debris buildup and ensure optimal performance
– Store the saw properly when not in use, keeping it away from direct sunlight and moisture
– Follow the manufacturer’s guidelines for blade replacement and maintenance to ensure the longevity of your saw
By following these tips and guidelines, you’ll be able to keep your Dewalt DCS391 circular saw in top condition, ensuring it continues to be a reliable and valuable tool in your workshop or on the job site.
| Tool | Description |
|---|---|
| Wrench or Allen key | Used to loosen and tighten the blade bolt |
| Safety goggles or glasses | Protects your eyes from debris and dust |
| Work surface or bench | Provides a stable and comfortable workspace |
Final Thoughts
In conclusion, changing the blade on your Dewalt DCS391 circular saw is a crucial maintenance task that requires attention to detail and the right tools. By following the steps outlined in this guide, you’ll be able to ensure your saw continues to perform optimally and safely. Remember to always follow the manufacturer’s instructions and take necessary safety precautions when working with power tools. With a new blade installed and proper maintenance, your Dewalt DCS391 circular saw will remain a reliable and valuable tool in your workshop or on the job site.
What are the necessary tools and materials to change the blade on a Dewalt DCS391 Circular Saw?
To change the blade on a Dewalt DCS391 Circular Saw, you will need a few essential tools and materials. First, you will need a new circular saw blade that is compatible with your Dewalt DCS391. You can choose from a variety of blade types, such as a general-purpose blade, a ripping blade, or a cross-cutting blade, depending on your specific needs. Additionally, you will need a wrench or a blade-changing tool, which is usually provided with the saw. It is also a good idea to have a pair of gloves and safety glasses to protect yourself from injury.
It is crucial to choose the right blade for your Dewalt DCS391 Circular Saw to ensure optimal performance and safety. A compatible blade will fit properly on the saw’s arbor and will be designed to handle the saw’s power and speed. Using an incompatible blade can lead to poor performance, damage to the saw, or even injury. When selecting a new blade, check the manufacturer’s specifications and recommendations to ensure you get the right one for your needs. By having the necessary tools and materials, you can change the blade on your Dewalt DCS391 Circular Saw safely and efficiently.
How do I prepare my Dewalt DCS391 Circular Saw for blade changing?
Before changing the blade on your Dewalt DCS391 Circular Saw, it is essential to prepare the saw to ensure a safe and successful process. First, make sure the saw is unplugged from the power source to prevent any accidental start-ups. Next, remove any debris, dust, or dirt from the saw’s blade guard and other areas around the blade. This will give you a clear view of the blade and the surrounding components. You should also check the saw’s user manual or manufacturer’s instructions for any specific recommendations or guidelines for preparing the saw for blade changing.
Once you have prepared your Dewalt DCS391 Circular Saw, you can proceed with the blade-changing process. It is crucial to follow the manufacturer’s instructions and take necessary safety precautions to avoid injury or damage to the saw. Start by locating the blade lock, which is usually a small lever or button located on the saw’s housing. Engage the blade lock to prevent the blade from rotating during the changing process. By following these steps, you can ensure a safe and successful blade-changing experience with your Dewalt DCS391 Circular Saw.
What are the steps to remove the old blade from my Dewalt DCS391 Circular Saw?
To remove the old blade from your Dewalt DCS391 Circular Saw, you need to follow a series of steps. First, locate the blade bolt, which is usually a large bolt that holds the blade in place. Use your wrench or blade-changing tool to loosen the blade bolt by turning it counterclockwise. Be careful not to remove the bolt completely, as the blade may fall off and cause injury. Once the bolt is loose, you can carefully pull the blade away from the saw’s arbor. If the blade is stuck, you can use a bit of penetrating oil or silicone spray to help loosen it.
After removing the old blade, inspect the arbor and surrounding areas for any debris or dirt. Clean the arbor and other components to ensure a smooth and secure installation of the new blade. It is also a good idea to inspect the old blade for any signs of wear or damage, which can help you determine the cause of any performance issues. By following these steps, you can safely and successfully remove the old blade from your Dewalt DCS391 Circular Saw and prepare it for the new blade. Make sure to handle the old blade with care, as it may be sharp and can cause injury.
How do I install a new blade on my Dewalt DCS391 Circular Saw?
To install a new blade on your Dewalt DCS391 Circular Saw, start by aligning the blade with the saw’s arbor. Make sure the blade is properly seated and centered on the arbor, and the mounting holes on the blade are aligned with the arbor’s spline. Use your wrench or blade-changing tool to tighten the blade bolt by turning it clockwise. Be careful not to overtighten the bolt, as this can damage the blade or the arbor. Once the blade is secure, check the blade’s orientation and make sure it is properly installed.
After installing the new blade, make sure to test it to ensure it is properly seated and secure. Run the saw at a low speed and check for any signs of vibration or wobbling. If the blade is not properly installed, it can lead to poor performance, damage to the saw, or even injury. By following the manufacturer’s instructions and taking necessary safety precautions, you can ensure a safe and successful installation of the new blade on your Dewalt DCS391 Circular Saw. It is also a good idea to refer to the user manual or manufacturer’s instructions for any specific recommendations or guidelines for installing a new blade.
What safety precautions should I take when changing the blade on my Dewalt DCS391 Circular Saw?
When changing the blade on your Dewalt DCS391 Circular Saw, it is essential to take necessary safety precautions to avoid injury or damage to the saw. First, make sure the saw is unplugged from the power source to prevent any accidental start-ups. Wear protective gear, such as safety glasses and gloves, to protect yourself from injury. Additionally, ensure the saw is placed on a stable and flat surface, and the area is clear of debris and clutter. It is also a good idea to have a first aid kit nearby in case of an emergency.
It is crucial to be mindful of the blade’s sharp edges and points, as they can cause serious injury. Handle the blade with care, and avoid touching the cutting edges or points. If you are unsure or uncomfortable with the blade-changing process, consider consulting the user manual or manufacturer’s instructions, or seek assistance from a professional. By taking necessary safety precautions, you can ensure a safe and successful blade-changing experience with your Dewalt DCS391 Circular Saw. Remember to always follow the manufacturer’s instructions and guidelines for safe operation and maintenance of the saw.
How often should I change the blade on my Dewalt DCS391 Circular Saw?
The frequency of changing the blade on your Dewalt DCS391 Circular Saw depends on various factors, such as usage, blade type, and cutting conditions. As a general rule, you should change the blade when it becomes dull or shows signs of wear. A dull blade can lead to poor performance, increased risk of kickback, and damage to the saw. You should also change the blade if you notice any signs of damage, such as cracks, chips, or excessive wear on the cutting edges. Additionally, if you are using the saw for heavy-duty or high-frequency applications, you may need to change the blade more frequently.
It is a good idea to inspect the blade regularly to determine its condition and decide when to change it. Check the blade for any signs of wear, such as decreased cutting performance, increased vibration, or excessive noise. You can also use a blade sharpness test to determine the blade’s condition. By changing the blade regularly, you can ensure optimal performance, safety, and longevity of your Dewalt DCS391 Circular Saw. Remember to always follow the manufacturer’s instructions and guidelines for blade maintenance and replacement to get the most out of your saw.
What are the common mistakes to avoid when changing the blade on my Dewalt DCS391 Circular Saw?
When changing the blade on your Dewalt DCS391 Circular Saw, there are several common mistakes to avoid. First, make sure to unplug the saw from the power source to prevent any accidental start-ups. Avoid using an incompatible blade, as it can lead to poor performance, damage to the saw, or even injury. Additionally, be careful not to overtighten or undertighten the blade bolt, as this can damage the blade or the arbor. You should also avoid touching the cutting edges or points of the blade, as they can cause serious injury.
Another common mistake to avoid is not following the manufacturer’s instructions or guidelines for blade changing. The user manual or manufacturer’s instructions provide essential information and recommendations for safe and successful blade changing. By following these guidelines, you can ensure a safe and successful blade-changing experience with your Dewalt DCS391 Circular Saw. It is also a good idea to take necessary safety precautions, such as wearing protective gear and ensuring the saw is placed on a stable and flat surface. By avoiding these common mistakes, you can ensure a safe and successful blade-changing experience and get the most out of your saw.