Chrism

Hi all, new to this forum so thanks in advance for the help. I have recently brought a 2013 power steering fuel injected foreman 500. It has a crack in the front casing and was running rough. I have since replaced the front engine casing and this has made no difference to the engine performance. It starts and idles but bogs down and starts to die once throttle is applied. It maybe be but it also sounds very load. I have uploaded a video link of it.