Are you having trouble with a stretched chainsaw chain? Don’t worry; it’s a common problem that can be easily fixed.

A chainsaw is an essential tool for various cutting tasks, but over time, its chain may become stretched due to regular use. This stretching can lead to reduced cutting efficiency and even pose safety hazards if not addressed promptly. How to fix a stretched chainsaw chain involves several straightforward steps that you can manage on your own to restore the tool’s optimal performance.

In this guide, we’ll explore why chains deviate from their original size, how to identify signs of excess stretching and provide a step-by-step approach to tensioning the chain correctly, helping you maintain your chainsaw in peak condition.

What Will You Need?

Before we dive into fixing a stretched chainsaw chain, it’s crucial to gather all the necessary tools and equipment. As with any maintenance task, having the right tools can significantly affect the results you achieve. Here is a list of things you’ll need to get started:

• A replacement chain (if your current one is too worn out)
• A flat work surface
• A screwdriver or an Allen wrench (depending on your chainsaw model)
• Safety gloves
• Protective eyewear

Once you have everything you need, we can move onto fixing a stretched chainsaw chain.

10 Easy Steps on How to Fix a Stretched Chainsaw Chain

Step 1. Turn Off and Unplug the Chainsaw:

Ensuring the chainsaw is turned off and unplugged is the most crucial safety precaution before undertaking any maintenance work. This step prevents accidental starts, which could lead to severe injury. If your chainsaw is battery-powered, remove the battery to cut off the power completely.

For gas-powered models, switch off the engine and let it cool down entirely before you proceed. Ensure the saw is positioned securely on a flat, stable surface to avoid unintended movement. Taking these precautions will provide a safe environment for you to work in, allowing you to focus on the task without unnecessary risk. Safety gloves and protective eyewear should also be worn to protect your hands and eyes from any sharp components or unexpected debris.

Step 2. Inspect the Chainsaw Bar and Chain:

Once your chainsaw is safely powered down and stable, take a moment to inspect the bar and chain closely. Carefully examine the entire chain length for any visible signs of damage, such as cracks, chips, or excessively stretched links. Additionally, ensure the bar is in good condition and shows no warping or excessive wear.

It’s essential to verify that the chain is seated correctly in the guide bar’s groove, with no links sticking out or misaligned. Addressing any found damages or misalignments immediately is crucial, as these could impede the chainsaw’s performance and safety. If the chain appears excessively worn and repair seems improbable, consider replacing it with a new one, which may be more efficient and safer in the long run. After completing your visual and physical inspection, you will be ready to adjust the chain tension as necessary.

Step 3. Loosen the Chain Tensioning Screws:

With your chainsaw inspected and ready, begin by loosening the chain tensioning screws, which are typically found on the side of the chainsaw near the guide bar. Use the appropriate tool for your model, whether it be a screwdriver or an Allen wrench, to adjust the screws.

This step is vital as it allows you to easily reposition the guide bar and chain. Make sure not to remove the screws altogether; a few counterclockwise turns should suffice to provide the necessary slack in the chain for adjustment. Properly loosening these screws will enable you to set the desired tension level more precisely in the following steps. It’s important to note that this adjustment should be done subtly to avoid over-loosening, which could disrupt the rest of the re-tensioning process.

Step 4. Adjust the Chain Tension:

Now that the chain tensioning screws have been loosened, it’s time to adjust the tension of the chain itself. Pull the guide bar away from the chainsaw to take up slack in the chain. You should aim for the chain snug against the guide bar but not too tight. A good rule of thumb is that the chain should be able to move freely around the bar with a slight pull and should not sag beneath the bar.

Adjust the position of the guide bar until you achieve the desired tension level. Ensure the chain is aligned correctly with the sprockets, as misalignment can cause further stretching or damage. Once you are satisfied with the chain tension, proceed to tighten the tensioning screws to secure the positioning of the guide bar and chain.

Step 5. Tighten the Chain Tensioning Screws:

After properly adjusting the chain tension, securely tighten the chain tensioning screws. Use the screwdriver or Allen wrench that matches your chainsaw model to turn the screws clockwise until they are firmly in place. It’s crucial to ensure these screws are tightened adequately to maintain the appropriate tension and alignment of the chain during operation. Overly loose screws could result in slippage or additional stretching, compromising both the chainsaw’s performance and your safety.

Step 6. Check the Chain Tension:

Once the tensioning screws are tightened, it’s essential to perform a final check of the chain tension to ensure it is set correctly. Carefully lift the chain from the guide bar to see if there is light tension, but still allow some movement. The chain should snap back against the bar when released without sagging.

Further adjustment is necessary if the chain feels too tight and does not move at all, or if it appears too loose and sags. Repeat the previous steps of loosening and adjusting the chain tension to achieve the ideal tension. Ensuring the correct tension is crucial as it affects the chainsaw’s performance, providing smoother cuts and reducing wear on both the chain and the motor.

Step 7. Lubricate the Chain:

After confirming the chain tension is correctly set, ensuring it is well-lubricated for optimal performance and longevity is essential. Apply chainsaw bar oil along the entire chain length while slowly rotating the chain by hand to distribute the lubricant evenly. Adequate lubrication reduces friction between the chain and the guide bar, minimizing wear and heat buildup during operation. Make sure to use oil designed explicitly for chainsaws to achieve the best results and to protect the chain and bar from damage. Regular lubrication enhances cutting efficiency and prolongs the life of your chainsaw by preventing excessive wear.

Step 8. Reassemble the Chainsaw:

After ensuring the chain is tensioned correctly and lubricated, it’s time to reassemble your chainsaw. Begin by carefully replacing any parts or covers that were removed during the inspection and adjustment process. Ensure that the side cover is correctly aligned with the guide bar and securely fastened with screws or bolts, depending on your model. Double-check that all components are tightly affixed to prevent any movement during operation. You are now ready to begin using the chainsaw fully reassembled.

Step 9. Test the Chainsaw

Now that the chainsaw is fully reassembled, it’s vital to perform a test run to ensure everything is functioning correctly before using it for any severe cutting tasks. Begin by moving to a safe area with no obstacles or bystanders nearby. Wear protective gear, including safety goggles, gloves, and ear protection. Start the chainsaw following the manufacturer’s instructions, and allow it to run at idle speed for a few minutes.

Listen for any unusual noises, vibrations, or signs of malfunction. Gently rev the engine a few times to check for smooth acceleration and deceleration. Carefully test the cutting mechanism on a small piece of wood to assess the chain’s performance and tension. Ensure the chainsaw cuts efficiently and there is no binding or skipping on the bar.

Step 10. Regular Maintenance

Maintaining your chainsaw on a regular basis is crucial to ensure its longevity and optimal performance. After each use, begin by cleaning the chainsaw, removing any accumulated sawdust, dirt, or debris from the chain and guide bar. Check the air filter for dust buildup and clean or replace it as necessary for proper airflow and engine efficiency. Inspect the spark plug periodically and replace it if worn or damaged.

Keep the chain sharp to ensure smooth and efficient cuts; you can sharpen it yourself using a round file or take it to a professional service. Regularly verify the oiling system to ensure it’s functioning correctly and providing adequate lubrication to the chain. Lastly, store your chainsaw in a dry, safe place when not in use, away from the elements, to prevent rust and damage.

By following these steps, you can easily adjust the chain tension on your chainsaw to ensure its optimal performance and safety.

Conclusion

How to fix a stretched chainsaw chain involves a series of systematic steps to ensure both the functionality and safety of your equipment.

Start by loosening the chain tension and checking for excessive wear or damage on the chain links before re-tensioning. Adjust the tensioning screws carefully, ensuring the chain fits snugly against the guide bar but still allows for smooth movement. After making the necessary adjustments, lubricate the chain thoroughly to reduce friction and wear. Ensure the chainsaw is properly reassembled, conducting a test run to verify the adjustments have restored optimal performance. Regular maintenance is critical to preventing future issues, as well as keeping your chainsaw chain correctly adjusted and lubricated to prolong its lifespan and ensure safety.

By diligently following these steps, you can effectively manage and remedy any issues related to a stretched chainsaw chain.