Red Green style!
According to the owner's manual you just remove the dip stick and turn the mower over to dump out the oil*.
Had some Honda oil left-over from my Forza300.
They make this mower with a Briggs & Stratton engine as well, same price. I found this one at Lowes with the Honda engine. I think these are made here in Ohio. After retirement - I treated myself to front-wheel-drive!
Stig
*my dear wife thinks she's mislaid her cake pan!