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My Petrol Chainsaw will not tension the chain correctly

Modified on Fri, 12 Jun at 12:36 PM

This article explains how to resolve common issues when the chain on your petrol chainsaw cannot be tensioned correctly.


⚠️ Safety Notice

Ensure the chainsaw is switched off and placed in a safe position before carrying out any adjustment.

Wear suitable protective gloves when handling the chain.


Important Information

Correct chain tension is essential for safe and effective cutting. The method for adjusting chain tension varies depending on the model of your chainsaw.

Please refer to your instruction manual for model-specific guidance.



For Qualcast PCS46Z

This model uses a tensioning knob and wheel system.

  1. Disengage the chain brake.
  2. Pull out the adjustment knob lever and turn anti-clockwise to loosen slightly.
  3. Use the tensioning wheel to adjust the chain tension.
  4. Turn clockwise to tighten and anti-clockwise to loosen.
  5. Re-secure the side cover by tightening the adjustment knob.



If the Issue Persists

If you are still unable to tension the chain correctly after following the steps for your model, please contact our Technical Support Team for further assistance.


✔️ Summary

  • Disengage chain brake before adjusting
  • Use model-specific tensioning method
  • Ensure chain lifts slightly from bar when correct
  • Re-tighten all fixings securely

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