To check the hydraulic fluid level in your Massey Ferguson tractor, start by parking your tractor on a level surface. Raise the hood then locate the hydraulic reservoir cap, usually located at the back of the engine block. While the engine is cold, remove the cap and check the fluid level in the reservoir. If the level is low, add hydraulic fluid until it reaches the line indicated on the dipstick or filler neck. Replace the cap when done.