5HP briggs won't throttle up
I have a craftsman chipper shredder with a briggs 5HP engine. when using the other day I put a limb in it the engine bogged down and never came back. I took carb off and cleaned, it was dirty. cleaned air filter and checked spark plug. started back up and same thing, thought maybe carb was clogged again. took off and cleaned again but was not clogged this time. put back together and still same thing. Engine runs good doesn't miss, surge, or backfire it just wont rev up stays at low idle now matter what i adjust. haven no clue what to look at next. Thanks in advance.