I made a mistake in the video, At 10:36 I mentioned that I turned the L screw, But unfortunately I proceeded to turn the H screw instead. I should have turned the screw on top of the Carb, which is where the L screw is. It still made a slight improvement, but I wanted to mention that I had made a mistake.

Links to products I have in my tool bag.
Compression tester. https://amzn.to/2NMgeze
Spark Checker. https://amzn.to/3bnXjmA
Tygon Fuel Line. https://amzn.to/3aCGntm
Carb Adjustment tools. https://amzn.to/3k7cgxe
Primer Bulb. https://amzn.to/3dC0WYK
Fuel Filter. https://amzn.to/2ZC0T7i
Metering Diaphragm. https://amzn.to/2NIo5hw
Chemical bottle. https://amzn.to/3eWcGVs

Thanks for watching. This Echo trimmer has been in my storage for years, But it still runs, but won't stay running.

This video is meant as entertainment, always practice safety.