hillvert HT-LS-5000 Manual De Instrucciones página 83

3.4.3.
The hydraulic oil in the machine should be changed after every 150 hours of
operation. To replace it, follow these steps:
• Make sure that all moving parts have stopped and the machine is
disconnected from the power supply.
• Unscrew the oil drain plug with the dipstick to remove it.
Changing the hydraulic oil