help cant get os46sf to run
The 46SF and the 61SF have completely different carb designs so unfortunately the excellent advice above will not be applicable. Hopefully you have put your carb back together again correctly with the spray bar properly oriented. The screw in the center of the throttle arm is where you adjust the low end which I suspect is out of whack and causing your engine to die when the throttle is advanced. It could either be too lean but more likely too rich so start turning that screw inwards 1/8th turn at a time and run your engine to see how it affects the throttle transition. If your adjustmnent is now way out of whack then close the barrel of the carb and screw the low end in all the way (be gentle) and then back it out one full turn ( this will be approx the original factory setting) then and then start the engine and go thru the 1/8th turn rountine described above until you get the normal throttle response you've come to expect from an OS.