I did mine myself. I'm 50+ miles from the dealer and the parts and fluids were bad enough without renting a trailer and paying for labor.
I have an
L4400 and I'd say it took me less than two hours. The hardest part for me was managing the waste fluids. The tractor holds over 10 gallons of UDT so the standard oil catcher for a car was too small and the
L4400 was not quite tall enough to slide a 5 gallon bucket under. I ended up using a large galvanized wash tub. But when it was full, it was too big and too heavy to pick up and pour the fluid into the empty UDT buckets. So, I dipped it out with smaller bucket. PITB.
Changing filters was easy enough but I'd left my filter wrench at home. Fortunately I did my service in my B-I-L's shop and he had several.
Getting fluid into the tranny is a bit awkward and requires a long necked funnel which makes it slow. Someone in another post mentioned using some 1/4" tubing.
Tip: For those who don't know (and I didn't), when pouring from a 5 gallon bucket, you position the little spout on top. If you put it on the bottom, next to the funnel it glops and slops all over the place. Fortunately my B-I-L clued me in on this before I made a mess because positioning the spout up is not intuitive.
I was also glad he was there since I had no idea how to open the little spout on the 5 gallon UDT buckets. /forums/images/graemlins/shocked.gif
The final issue with the
L4400 is the front axle drain holes which are down at the bottom of the bevel gears on each side. I made a mess with these. I think the only way to do it neatly would be to jack up the front (FEL will do) remove the wheels/ tires and put a large pan underneath _each_ one since you have rock the axle assembly up and down to get all the old fluid out.
Next time I'll definitely get it done more quickly and with less mess. But it really is not a difficult job.
Remember to bleed the fuel system if you change the fuel filter.