And you should use a pair 3 ton jack stands. And some K46 do have factory install drain plugs, just depends if the OEM was willing to spend a few pennies more for this option.
And I have an image where two drain holes can be added but it requires opening the case as to keep the metal shavings out plus you don't want to damage the gears or center block.
These holes should be there already just not completely drilled thru and tapped. K46 will need M8-1.25 flange screws and sealing washers.
But if K46 doesn't have these drains already then it is removal and turning the transaxle upside down to drain it.