For some reason I can’t copy/save the link. Here are a couple screen shots to help find it. I google Yong Heng diagram and it led to the page you seek.
Has anyone tried to remove the flywheel off the shaft? My housing cracked and since I have 2 others I'm trying to rebuild it. I cant find any YouTube videos removing the flywheel off the motors shaft. Sambo Cotton shows alot but not that.