I'm not familiar with your loader. Generally you would install the legs with the bucket lowered. (It may need to be slightly raised to install the legs.) There will be some kind of pin on each side of the tractor where the loader is held to the tractor bracket. Remove these. At this point you will have to (as I recall) lower the bucket slightly. This will lift the bracket away from the tractor mount. Turn off the tractor. Disconnect the hydraulic lines. Plug them as required - depends on the tractor. You should now be able to back the tractor away from the loader. Reverse the process to reinstall.
