Small Engines (Lawn Mowers, etc.): Stihl km85r trimmer, stihl km85r, bubble gum

Question
Will not accelerate.Starts up fine and idles great but bogs out when you try too accelerate.Cleaned the plug,air filter and exhaust. Tried to adjust the high and low needles with no success.Have run out of ideas. Thanks

Answer
pull the fuel lines out of the tank and see if perhaps the filter is plugged?  Is the line cracked or have a bubble gum like appearance?  Ah heck... if it looks bad replace it.  Did you replace the rubber fuel diaphragms inside of the carb too?  Perhaps all you need is a carb gasket rebuild kit.