When I changed mine,did it on gravel[cause]. And had plenty o drain pans,two big ones,just couldn't get them switched in time,so,probably 1 gal at least went in ground,so,when you get ready to do this,garage might not be best place.
My owners manual for ck25,30,35 tractors is very good,and it tells you all you need to know. One thing though,there are two plugs on bottom rear beside rear tires,that you have to look for a little,but my manual showed them.
One other thing,the front axil holds a good bit more than manual says[0n ck 30 anyways] and it takes a long while for it to settle,you got to run it a min or two,than check,than repeat,than repeat,than next time you use it,it will be a little low,than next time you use it,it will be a little low,.In other words if you just drained my front axil and filled to middle of sight hole,than didn't check it again for a month or two,you would have probably been running it 2 qts low.
My owners manual for ck25,30,35 tractors is very good,and it tells you all you need to know. One thing though,there are two plugs on bottom rear beside rear tires,that you have to look for a little,but my manual showed them.
One other thing,the front axil holds a good bit more than manual says[0n ck 30 anyways] and it takes a long while for it to settle,you got to run it a min or two,than check,than repeat,than repeat,than next time you use it,it will be a little low,than next time you use it,it will be a little low,.In other words if you just drained my front axil and filled to middle of sight hole,than didn't check it again for a month or two,you would have probably been running it 2 qts low.