MF 165/188 Power Assisted Steering

[Tim188]

Has anyone got any information on how to adjust the Power steering behind the oil cooler? There is a Pivot point that is moved by the drag arm that operates the Power Assisted Ram but there is a threaded bar with a screwdriver slot and a locknut that I am told needs to be adjusted to improve the performance of the steering. Any help would be appreciated. I believe the 165 is the same as the 188 regarding the Power steering.