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
I can answer this question...
How do I adjust the carburettor on a Ryobi Grass Scorpian?