How do you replace hydralic fluid in a barber chair?

To replace hydraulic fluid in a barber chair, first, locate the hydraulic pump, typically positioned under the chair. Use a syringe or a pump to remove the old fluid from the reservoir, then clean the reservoir if necessary. Next, refill the reservoir with the appropriate hydraulic fluid, ensuring not to overfill. Test the chair's operation to confirm the fluid change has resolved any issues.