First of all….you better tell us what’s going on with your tractor. Can’t just adjust hydraulic pressure for no reason. Especially on an older tractor.
A month ago my 2002 kioti ck25 was taken to the local dealer for work. Took way too long for them to obtain filters from Kioti but finally they did. I'd complained the loader and scraper worked very slowly. But a filter didn't help. They got a replacement pump at great expense but no...
www.tractorbynet.com
Look under the hydraulic section for more reading material….