Hope to rebraze the leaking fitting from top of tractor to filter today(was out of acetylene of course& picked up a tank yesterday) Hope to change fluids soon if I get leaks fixed Does backhoe need to come off to drain Hydraulics on this? Still need to figure out how to remove it to get at three point for garden work Found the operators manual for it a 4520B no luck with the others yet Have a great day all