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How do I adjust the carburettor on a Ryobi Grass Scorpian?

I need to adjust the inlet fuel screws on a Ryobi Grass Scorpion grass trimmer.
Bill T, August 2011
Depending which Grass Scorpion model you have you may have a slow running(idle) jet and a hi speed(full throttle) jet which are adjustable. There is no "inlet" adjustment as the fuel supply is normally controlled by a diaphram. Does your carb have 2 spring loaded screws with L and H beside them.

Kent, September 2011
sealed carb, so you can't. Replacement carb only.

pleasant, September 2011
link Click here to see other fixes for Ryobi.