Small Engine Problems? Ask an Engine Mechanic for Answers ASAP
As far as why the oil isnt coming out.. That is a concern?? sounds like some sort of blockage.. I do recommend removing the sump pan.. and find out what obstructing the drain.. This could lead to a potential problem...
Just wanted to offer a suggestion on flushing the motor... Rather than using gasoline.. I'd use kerosene instead. and change the oil a few times afterward to make sure all of the flush additive is out... Let me know if i can be of further assistance.. Thanks, Joe