OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Trimmers and Brushcutters Ryobi Trimmers & Brushcutters Ryobi Lawn Hornet 1100 MK III Leaking

We are getting there, we just have a bit further to go.

I am not sure what you mean by adjusting the lever screw. I think you mean you were loosening the retaining screw that holds down the metering lever pivot, circled in red in this picture:



That screw should be tightened firmly to hold the pivot in place - it is not an adjustment. The metering lever is adjusted ideally by using a plastic tool, like this:



You can easily make your own gauge out of sheet metal. For WT and WA models, the center bar, which touches the top of the metering needle, should project 0.065" (1.65 mm) below the other two bars, which rest on the flat body of the carburetor at the sides.

It seems from what you have said that you have the metering lever height close to correct, but it worries me that you may not have had the pivot retaining screw tight when you measured it. Because the metering lever is spring-loaded, it rises up when the screw is loose. Unless the screw was tight when you finished your adjustment, it looks as if you need to go through the process with a home-made gauge.

Once you have the metering lever height adjusted, we can talk about making any necessary fine adjustment of mixture by using the H and L screws. If you had the pivot retaining screw tight when you did your test, it sounds as if all that will be needed is some fine-tuning of the high speed mixture screw, but please do not touch that until we have finalised the metering lever discussion.