My elderly widowed nieghbor has this weedeater string trimmer and I replaced the carberator for her with a new one from poulan parts, and after installing it and run checking it for leaks and operability, I found that it bogs down badly when accelerating. You have to slowly depress the throttle and kind of wait for the engine to come up to full rpms. I asked her had it always done this and she said it was like this when she bought it new. I was thinking that maybe it was something to do with the new carb I had installed for her, but apparently it isn't. I am thinking that maybe the carb needs adjusting, i.e. the high and low speeds, but not sure where these adjustments are. The instructions that came with the new carb only instructed on idle adjustment after install.

How does it run after its warmed up?

The same, I thought that was the problem but after warming up it still did not rev up properly, I am thinking that the high and or low speed jets need to be adjusted, but I cannot tell where or what tool I would need to make these adjustments.