I own a '72 CB450 and I have made the classic mistake of leaving the petcock on. My oil is now overrun with gasoline and I am scratching my head.
I never saw any gas overflow through from the float bowl overflow tube, so how did it get into the engine?
I recently purchased a CL350 which was not in great running order. I lucked out however and after changing out the throttle cable, adjusting the carbs and putting some new oil in it, she runs like a dream. However my right carb is missing the drainage valve/screw (I'm not sure what you call it)...