hello everybody i need some help if you all dont mind i have a 99 polaris 120 that my kids ride and the engine siezed up on it i cant pull the eng over with the pull rope and i cant turn it over from the pto side either and there is no spark plug in it my qustion is the engine appears to be no more then a brigs and startain lawn mower engine with a polaris sticker on it i was wondering if that is the case and if so can i find anther lawn mower engin with the same type of engine mounts and put that in or is it a polaris spacific engine that they put in them any help would be great thanks all