My vintage MTD Briggs Flathead powered 22" mower has a 3/8" square in the drain plug. I just put two 1 gal paint cans on my work bench, lift the mower to sit on the cans, then I can easily access the drain plug, & remove the blade, sharpen & balance, cap the drain. Put it back on the ground & add my fav oil & service the rest..
It's not rocket science. Neighbor tipped his push mower over to the wrong side & thought his motor locked up. I told him to remove the spark plug & start pulling the rope till the oil stops squirting out the spark plug hole.. He had filled the combustion chamber with oil, thus preventing the piston from being able to come up on the stroke..
He was gonna throw that mower away...............I could have had it for FREE. But nice to be nice..