How to Fix Chainsaw Cutting to the Right: 10 Easy Steps + Preventative Tips

Table of Contents#

1. Inspect the Guide Bar for Damage or Wear
2. Check and Sharpen the Chain Correctly
3. Adjust Chain Tension Properly
4. Ensure the Chain is Installed in the Right Direction
5. Verify Bar Oil Flow is Adequate
6. Check for a Bent or Misaligned Guide Bar
7. Inspect the Sprocket Nose for Wear
8. Adjust the Carburetor (If Needed)
9. Check the Chainsaw’s Balance and Handle Grip
10. Test Cut and Fine-Tune
11. Preventative Tips to Avoid Future Veering
12. Conclusion
13. References

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Step 1: Inspect the Guide Bar for Damage or Wear#

The guide bar is the backbone of your chainsaw’s cutting performance, and uneven wear or damage is one of the most common causes of veering.

How to Check:#

• Turn off the chainsaw and disconnect the spark plug wire for safety.
• Run your fingers along the top and bottom rails of the guide bar. Look for:
  • Burrs or uneven wear on the right side (this can cause the chain to pull in that direction).
  • Dents, cracks, or warping along the bar’s length.
  • A worn-out groove where the chain sits.

Fix:#

• For minor burrs, use a flat file to smooth the rails evenly on both sides.
• If the bar has deep dents, cracks, or excessive wear, replace it immediately. A damaged bar can damage your chain and pose safety risks.

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Step 2: Check and Sharpen the Chain Correctly#

A dull or unevenly sharpened chain is the #1 reason chainsaws pull to one side. If the teeth on the right side of the chain are shorter or duller than the left, the saw will naturally veer right.

How to Check:#

• Examine each cutting tooth. Sharp teeth have a clean, pointed edge; dull teeth are rounded or chipped.
• Compare the length of teeth on both sides of the chain. If right-side teeth are noticeably shorter, they’ve been over-sharpened or worn unevenly.

Fix:#

• Use a round file that matches your chain’s pitch (check your chainsaw manual for the correct size—most are 5/32”, 3/16”, or 7/32”).
• Secure the chain in a vise or use a sharpening guide for precision.
• Maintain the correct sharpening angle (usually 30–60 degrees, depending on your chain type—refer to the manual).
• Sharpen each tooth evenly: file 3–5 strokes on each right-side tooth, then flip the bar and do the same for left-side teeth.
• Don’t forget to sharpen the depth gauges (the small metal tabs in front of each cutting tooth) to ensure they’re at the correct height (typically 0.025” for most chains).

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Step 3: Adjust Chain Tension Properly#

A chain that’s too loose or too tight can cause uneven cutting and veering. A loose chain may slip to one side, while an overly tight chain increases friction and strains the guide bar.

How to Check:#

• With the saw off and spark plug disconnected, lift the chain from the bottom of the guide bar. You should be able to pull it ¼” to ⅜” away from the bar.

Fix:#

1. Loosen the two bar nuts on the side of the chainsaw slightly.
2. Locate the tension adjustment screw (usually near the bar nuts). Turn it clockwise to tighten the chain, counterclockwise to loosen it.
3. Pull the guide bar up firmly to ensure it’s seated correctly, then re-tighten the bar nuts.
4. Test the chain again: it should move freely with a light tug, but not sag below the bar.

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Step 4: Ensure the Chain is Installed in the Right Direction#

It’s easy to install a chain backward by mistake, and this will immediately cause poor cutting performance, including veering.

How to Check:#

• Look at the cutting teeth on the top of the guide bar. They should face forward (toward the tip of the bar). If they’re facing backward, the chain is installed incorrectly.

Fix:#

1. Loosen the bar nuts and slide the bar away from the engine.
2. Remove the chain from the bar and sprocket.
3. Flip the chain so the cutting teeth face forward on the top of the bar, then reattach it to the sprocket and guide bar.
4. Re-adjust the chain tension and tighten the bar nuts as outlined in Step 3.

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Step 5: Verify Bar Oil Flow is Adequate#

Insufficient bar oil causes excessive friction between the chain and guide bar, leading to uneven wear and veering. Without proper lubrication, the chain can bind or pull to one side.

How to Check:#

1. Fill the bar oil tank with high-quality chainsaw bar oil (avoid using motor oil—it doesn’t provide enough lubrication).
2. Start the saw and hold it over a piece of white paper. Run the chain at idle for 10–15 seconds.
3. You should see a steady stream of oil dripping onto the paper. If not, the oil flow is blocked.

Fix:#

• Clean the oil port on the end of the guide bar with a small wire or toothpick.
• Check the oil pump for clogs or damage. If the pump isn’t working, you may need to replace it (consult a professional if unsure).

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Step 6: Check for a Bent or Misaligned Guide Bar#

A bent guide bar will cause the chain to cut at an angle, no matter how well-maintained it is.

How to Check:#

• Place the guide bar on a flat, level surface (like a workbench).
• Look for gaps between the bar and the surface. If the bar rocks or has visible gaps, it’s bent.

Fix:#

• For minor bends, clamp the bar in a vise and gently tap the bent area with a hammer to straighten it. Be careful not to over-bend or crack the bar.
• If the bar is severely bent or warped, replace it. Attempting to straighten a heavily damaged bar is risky and may not fix the issue.

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Step 7: Inspect the Sprocket Nose for Wear#

The sprocket nose is the small toothed wheel at the end of the guide bar that keeps the chain moving. Worn teeth on the sprocket can cause the chain to jump or pull to one side.

How to Check:#

• Look closely at the sprocket nose. If the teeth are rounded, chipped, or worn down to the base, it’s time to replace it.

Fix:#

• If the sprocket is removable (common on most modern bars), purchase a replacement sprocket and install it according to the manual.
• If the sprocket is integrated into the guide bar, replace the entire bar.

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Step 8: Adjust the Carburetor (If Needed)#

A poorly adjusted carburetor can cause the engine to run too lean or too rich, leading to uneven power delivery and veering. This is a more advanced fix, so proceed with caution.

How to Check:#

• If your saw struggles to start, stalls frequently, or produces excessive smoke, the carburetor may need adjustment.
• A lean mixture (too much air, too little fuel) can cause the engine to lose power, making it hard to cut straight. A rich mixture (too much fuel) can lead to sluggish performance.

Fix:#

1. Locate the three carburetor screws: L (low speed), H (high speed), and idle.
2. Turn the L and H screws clockwise until they’re snug, then back them out 1.5 turns each (this is the factory default setting).
3. Start the saw and let it warm up. Adjust the idle screw until the chain doesn’t move at idle.
4. Adjust the L screw until the engine runs smoothly at low speed, then adjust the H screw for smooth high-speed performance.

• Note: If you’re uncomfortable adjusting the carburetor, consult a certified chainsaw technician to avoid damaging the engine.

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Step 9: Check the Chainsaw’s Balance and Handle Grip#

Sometimes, the issue isn’t with the saw—it’s with your grip or stance. Poor balance or incorrect handling can make the saw veer right.

How to Check:#

• Hold the saw with both hands: your dominant hand on the rear handle, non-dominant hand on the front handle.
• Ensure your arms are slightly bent to absorb vibration, and your body is positioned to maintain control.
• If you’re leaning to one side or forcing the saw through wood, it will pull in that direction.

Fix:#

• Keep the saw balanced and let the chain do the work—don’t push or force it.
• Take breaks to avoid fatigue, which can lead to poor grip and control.
• Practice cutting on small pieces of wood to refine your technique.

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Step 10: Test Cut and Fine-Tune#

After making adjustments, it’s time to test your saw to see if it’s cutting straight.

How to Test:#

1. Choose a small, dry piece of firewood or a branch (6–12 inches in diameter).
2. Make a slow, steady cut through the middle of the wood.
3. If the cut is straight and clean, you’re done! If it still veers right, go back through the steps to identify which fix you missed (common culprits are uneven chain sharpening or a worn guide bar).

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Preventative Tips to Avoid Future Veering#

To keep your chainsaw cutting straight, follow these maintenance habits:

• Clean the guide bar and chain after every use: Remove sawdust and debris from the bar groove and chain links.
• Sharpen the chain regularly: Don’t wait until it’s dull—sharpen after every 5–10 hours of use, or sooner if you notice reduced cutting performance.
• Replace worn parts: Swap out guide bars, chains, and sprockets before they become severely damaged.
• Use high-quality bar oil: Cheap oil can clog the pump and cause uneven wear.
• Store the saw properly: Loosen the chain tension slightly when storing, and keep the bar oil tank topped off.
• Avoid cutting dirty wood or metal: Rocks, dirt, and metal can quickly dull the chain and damage the guide bar.

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Conclusion#

A chainsaw pulling to the right is a common issue, but it’s rarely a sign of a major problem. By following these 10 steps, you can diagnose and fix the root cause quickly, ensuring your saw cuts straight safely and efficiently. Remember, regular maintenance is the key to preventing future issues—don’t skip those small checks and adjustments, and your chainsaw will serve you well for years.

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References#

1. Husqvarna. (2024). Chainsaw Maintenance Guide. Retrieved from https://www.husqvarna.com/us/support/chainsaw-maintenance/
2. Oregon Tool. (2024). How to Sharpen a Chainsaw Chain. Retrieved from https://www.oregonproducts.com/en-us/learn/how-to-sharpen-a-chainsaw-chain/
3. STIHL. (2024). Chainsaw Troubleshooting. Retrieved from https://www.stihlusa.com/support/troubleshooting/chainsaw/