The first step is to locate the clutch pedal under the dashboard of the Massey Ferguson 135. Once this is located, use a wrench or screwdriver to loosen the cover and reveal the clutch linkage. This will help to get access to the clutch plate, pressure plate and throw-out bearing. After gaining access, inspect the free play in the linkage and ensure it is not too tight or too loose. If this is the case, make adjustments accordingly. After that, use a pair of pliers to check for any broken or bent clutch plates and throw-out bearing.
Finally, raise the vehicle and locate the clutch housing. Remove the housing screws and look inside for any signs of dirt or debris. If so, clean it out with an air compressor or a shop vacuum. Afterwards, reassemble the housing and clutch linkage. Once everything is connected and tight, try operating the clutch to see if it will engage and disengage properly. If not, inspect for further issues and seek professional assistance if needed.