What to Do When Your Chainsaw Cuts Crooked

Your chainsaw should cut straight and true. If it starts to curve or cut unevenly, it's a sign that something might be wrong. A chainsaw sharpener might be needed, or you may need to replace the cutting teeth entirely.

Here’s what you can do if your chainsaw isn’t cutting straight.

Why Your Chainsaw Cuts Crooked

There are many reasons why a chainsaw might start cutting crooked. It could be due to a dull chain, uneven top plates, damaged cutting teeth, or improper tension. Sometimes it's simply a matter of how you're using the tool.

Uneven Chain Sharpness or Dull Chain

The chain is the main cutting component of your chainsaw. If it's not sharpened evenly, or if it becomes dull, it will struggle to make clean, straight cuts. This is especially true when working with hard wood or large branches.

Using a high-quality chain like a Stihl model can help maintain better performance over time and reduce the frequency of sharpening.

Incorrect Chain Tension

Chain tension is crucial for both performance and safety. If the chain is too tight, it can put extra strain on the motor and cause damage. If it's too loose, it may come off the bar or cause injury during operation.

Uneven Top Plates

The top plate of each cutter is responsible for making contact with the material being cut. If these are uneven, the chain won't cut smoothly, leading to crooked results.

Worn Out Chainsaw Bar

A worn or damaged bar can significantly impact the performance of your chainsaw. It supports the chain and helps guide it as it cuts. If the bar is not in good condition, it will affect the quality of your cuts and increase wear on the chain.

Damaged Cutting Teeth

Even if you know how to sharpen a chainsaw chain, some teeth may have been damaged from cutting through dirt, rocks, or other hard objects. This can result in uneven cuts and reduced performance.

Improper Depth Gauge

An improperly set depth gauge can also lead to inconsistent cuts. The depth gauge controls how deep the chain cuts into the wood. Over time, as the chain wears down, you'll need to adjust this to maintain optimal performance.

How to Sharpen a Chainsaw Chain Properly

If your chainsaw is cutting unevenly, it might be time to sharpen the chain. Here are the steps to do it right and keep your saw performing at its best.

Step 1: Clean the Chain

Before sharpening, make sure the chain is clean and free of dirt, oil, or debris. This makes the sharpening process easier and more accurate.

Soak the chain in a solution of water and ammonia to remove any buildup, then rinse and dry it before proceeding.

Step 2: Adjust Chain Tension

Set the chain tension so it’s just snug but not too tight. A properly tensioned chain ensures smooth cutting and reduces the risk of it coming off during use.

Step 3: Start with the Shortest Cutter

Begin by sharpening the shortest cutter first. This ensures all teeth are the same length. Once they’re even, the chain will cut straighter and more efficiently.

Step 4: File at the Correct Angle

Hold the file at the correct angle—usually around 30 degrees. This allows the blade to cut effectively without damaging the tooth.

Step 5: Sharpen All Cutters Evenly

After sharpening one side, flip the chainsaw and repeat the process on the opposite side. Make sure every tooth is filed evenly for consistent cutting performance.

Step 6: Check Depth Gauges

Finally, check the depth gauges. They should be slightly shorter than the cutting teeth. If they’re too long, they’ll prevent the chain from cutting properly and may need filing down.

Get Professional Chainsaw Sharpeners at Jono & Johno

A chainsaw that cuts in a zigzag pattern is not only inefficient but also dangerous. Using a professional chainsaw sharpener can help ensure that your equipment performs reliably and safely. Always remember to maintain other parts of your chainsaw as well, such as the bar and chain tension.

At Jono & Johno, we offer everything you need for chainsaw maintenance, including high-quality chains, power tools, and safety gear. Visit our website to browse our full range and reach out with any questions. We're here to help you stay safe and productive in the field.

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