Adjusting the tickover and mixture - Ryobi Garden

The 'fuel mix' screw is only for tickover as the main jet is closed at that point. The other screw is for tickover speed.
If you are not experienced in setting up twin carbs, you will have fun.
Screw both mixture screws in whilst counting the turns and part of turn. Remember the turns in case you get mixed up.
Unscrew them both 2 1/4 turns. That is a good starting point.
With a hose pipe, place one end near your ear and the other to listen at each carbourettor. You are listening for even vacuum sounds from both.
With the tickover screw, that will be obvious but as I say, what you do to one must be done to the other or it will tickover rough.

the mixture screw is set 1 3/4 turns out so screw it all the way in and then turn it out 1 3/4 turns. the tickover screw is turned in just enough to keep it running without holding the throttle

RICHEN THE FUEL MIXTURE SLIGHTLY OR BETTER STILL SPEED UP THE TICKOVER BY CLOCK WISE ADJUSTMENT OF THE IDLER SCREW.

What make and model are you trying to adjust? Some of the smaller Stihl saws only have a tickover adjustment.

The larger screw is the throttle stop and the smaller screw is tickover mixture control. Unscrew the throttle stop and it ticks over slower, unscrew the smaller screw and the mixture has more air on tickover.
Perhaps the float valve is not set up correctly and is letting too high a level of fuel in?
Hope that helps.

three problems that i think off : 1 - plugged main jet solution : remove main jets and clean with new fuel 2- pilot mixture too week solution : adjust the pilot mixture to factory settings and recheck 3- water in float bowl solution : drain float bowl

Clean carb and fuel system out. Make sure fuel is fresh.

you just need to adjust your carb mixture screws located on the side of the carb this will adjust your tickover revs.hope this helps