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14Jan 2025

how to safely shorten a chainsaw chain

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how-to-safely-shorten-a-chainsaw-chain.jpg

Keeping correct chainsaw chain length is vital for safety and efficiency. Chains can wear or get damaged over time, needing link removal to function well. Whether fixing wear, removing damaged links, or adjusting fit, knowing how to safely shorten a chain is essential.

The correct chain length boosts performance and prevents hazards from a loose or tight chain. This guideline provides detailed explanation on how to safely shorten a chainsaw chain. Learn these tips to keep chainsaw in top condition. Read on to master this crucial maintenance skill.

Understanding chainsaw chain sizing

It's vital to know the size of chainsaw chain for performance and safety. Chains are mainly measured by pitch, gauge and the number of drive links.

Chain pitch: This specifies the chain size, which should correspond with the pitch of the drive sprocket and the guide bar tip. The calculation method is to divide the distance between any three consecutive rivets by two. Common pitches are 1/4 inch, .325 inch, 3/8 inch, and .404 inch.

Chain gauge: This refers to the thickness of chain link that fits into chainsaw guide bar. Common gauges include .043, .050, .058 and .063 inches.

Number of drive links: This number determines the length of the chain. The drive links run along the guide bar and mesh with the drive sprocket, so they must match the gauge of the guide bar to install properly.

Understanding these elements helps your chainsaw run smoothly and safely. Next, BISON will guide you through shortening your chain while maintaining these important specifications.

Tools and safety equipment

To safely shorten a chainsaw chain, we should use proper tools. Common ones are chainsaw files, depth gauges and chain breakers.

Chainsaw safety comes first. Wear goggles, earmuffs, gloves and a hard hat. Wear chainsaw chaps or pants for safe.

The process of shortening chainsaw chain can be completed safely and effectively by using the required tools and wearing appropriate safety gear.

How to shorten a chainsaw chain

Remove the chain from the chainsaw

Ensure Safety: Make sure your chainsaw is turned off and unplugged.

Remove the bar cover: Loosen the nuts on the side panel to remove the cover.

Release chain tension: The chain can be easily removed by turning the tensioning screw.

Remove and track direction: Carefully remove the chain, noting the direction it will be reinstalled.

Inspect the chain

Look for any visible damage such as cracked or bent links and damaged cutters. If the damage is severe, it is safer to replace than shorten.

Measure and mark the chain

Determine the new length

Determine the number of links to be removed. Determine how much the chain should be shortened based on the length of the chainsaw bar and your specific cutting needs. Calculate how many links make the chain too long. Count the exact number of links to remove to get the proper fit. This will usually require some trial fits or consulting your chainsaw manual for the best fit.

Marking the chain

Clearly mark the links to be cut. Using a marker or chalk, make a clear mark on the rivet of the first link you plan to remove. For better accuracy, mark both ends of the section to be removed if there are multiple links involved. Make sure the marked link is perfectly aligned with the length adjustment you calculated before proceeding. Double-check placement to avoid mistakes.

Securing the chain

Use a vise or tool to secure the chain so it remains stable, ensuring the marked link is accessible for precise cutting.

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Shortening the chainsaw chain

Removing the links

Align the links and place the marked link in the jaws of the chain breaker tool, ensuring it is centered. Use the chain breaker to apply steady pressure to push the rivet out of the link. Make sure the tool is properly aligned to avoid damaging adjacent links.

Once the rivet is removed, carefully separate the chain from the marked link. Handle each side gently to avoid bending or damaging other links.

Reattach the chain

Align the ends and bring the ends of the chain together, making sure the drive link and cutter are facing the correct direction. Insert the new rivet into the aligned holes and secure it with a chain breaker or rivet turning tool. Make sure it is pressed tight, but not too tight.

Confirm that the reattached link is as tight as the other links and has not moved excessively. Check the entire chain again to make sure no parts are loose and that it will run safely after reinstallation.

Testing and troubleshooting

Reinstall on the guide bar:  Fit the chain on the guide bar, with teeth facing forward on top. Carefully install chain around drive sprocket and along the grooves in the guide bar.

Adjust the tension: Slightly loosen the nuts on the guide bar to adjust. Adjust the chain using tensioning screw. The chainsaw chain should be snug, but still move smoothly along guide bar. There should be no sag, and you should be able to lift it slightly off the guide bar.

Test the chainsaw: Spin the chain by hand to make sure it moves freely without binding. Restart the chainsaw and let it idle. Watch for smooth operation and listen for odd noises. It is best to perform a test cut on a piece of wood to verify proper cutting performance. Make sure the cut is efficient and does not jump or jam.

Troubleshooting

  • Chain slippage: If chain is slipping, check the tension and readjust as needed.

  • Uneven cuts: Ensure chain is sharp and properly aligned on the bar.

  • Excessive vibration: Check for loose parts or misalignment on the bar or sprockets.

  • Check lubrication: Make sure the bar and chain are getting enough oil to run smoothly.

Conclusion

Shortening a chainsaw chain involves removing damaged or extra links, properly reinstalling the chain, adjusting the tension, and thoroughly testing the saw to ensure safe and efficient operation. By maintaining the correct chain length, you can improve performance and extend the life of your chainsaw. While this task can be done at home, be sure to seek professional help if you are unsure about any step in the process.

By following these guidelines, you will keep your chainsaw running smoothly and safely. To start optimizing your chainsaw today!



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