Do you have a question about the Eoslift M25 and is the answer not in the manual?
The hydraulic oil is insufficient. Add hydraulic oil.
Address insufficient oil, impurities, incorrect adjustment, or air in the cylinder.
Inspect for deformed parts, piston rod rust, or incorrect adjustment of nuts/screws.
The cause is damaged seals or parts. Replace the faulty components.
Check for impurities in oil, damaged seals, or incorrect adjustment of nuts/screws.