Quick Answer
Common mistakes when adjusting chainsaw chain tension include over-tightening, which can lead to reduced cutting performance and increased risk of kickback, as well as under-tightening, which can result in loose links and a loss of cutting efficiency.
Checking Chain Tension
Before adjusting your chainsaw chain tension, ensure you have the correct specifications for your particular model. Typically, you’ll need to refer to your owner’s manual for the recommended tension range. Use a tension gauge to measure the chain’s tension, and note the current reading. The gauge will usually show a range, such as 100-200 pounds of pressure for a 20-inch saw bar. For most chainsaws, a good starting point is to aim for the middle of the range.
Adjusting Chain Tension
To adjust the chain tension, locate the tensioner screw or adjusting screw. Loosen the screw by turning it counterclockwise. Then, use the tension gauge to measure the chain’s tension again, and continue to adjust the screw until you reach the desired tension. Be careful not to overtighten, as this can lead to increased stress on the chain and sprocket. For every 1/8 inch of chain slack, tighten the chain 5-10 pounds.
Troubleshooting Chain Tension Issues
If you find that your chain tension is consistently too loose, check the idler sprocket for wear or misalignment. Worn or damaged parts can cause the chain to sag, leading to reduced tension. If the sprocket is damaged, replace it immediately. Additionally, inspect the bar and chain for any signs of wear, such as nicks or excessive corrosion. Properly maintained bars and chains can help maintain optimal chain tension and prevent premature wear.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.