Noisey hydrostatics

Hydrostatic transmissions often make noise when the hydraulic fluid is cold and stiff. To help things warm up and operate more smoothly simply put the transmission in neutral and press the hydrostatic pedal. This starts the fluids moving (even though the tractor is not). After a few minutes things should be loosened up nicely and operation should be more normal. Using a high quality transmission oil can also make a substantial difference here.