If you need to remove hydraulic fluid from a Massey Ferguson 1533, you can do so by draining the fluid from the reservoir. The best way to do this is to remove the top of the reservoir, usually located near the engine, and draining out the fluid into some kind of container. Most models use fluid capacities ranging from 10 to 18 gallons, so you’ll need to keep track of how much you’re removing. Once you’ve drained the reservoir, clean any sludge or debris from the walls of the reservoir. Once the reservoir is cleaned, fill it with new hydraulic fluid according to the engine’s specifications.