1.) Undo the fixing screw of the chain wheel cover a few turns.
2.) Adjust the chain tension with the chain tensioning screw. Turning the screw clockwise increases the chain tension, turning it counter-clockwise decreases the chain tension. The chain tension is correct when the chain can be lifted by about 0.11 in. at the center of the bar.
3.) Tighten the fixing screw of the chain wheel cover.
Danger! All the chain links must lie properly in the guide groove of the bar.
Notes on tensioning the chain:
The chain must be properly tensioned to ensure safe operation. You can tell that the chain tension is perfect if the saw chain can be lifted by around 0.11 in. in the middle of the bar.
As the saw chain heats up during cutting and thus changes in length, please check the chain tension every 10 minutes and adjust it again as required. This applies in particular to new saw chains. When you have finished working, slacken the chain again as it will shorten when it cools down. This will help to prevent damage to the chain.