How do you replace drive coupler on a Massey Ferguson 240?

To replace the drive coupler on a Massey Ferguson 240, first ensure the tractor is turned off and secure it on a level surface. Remove the necessary covers to access the coupler, then disconnect the drive shaft by unbolting it from both ends. Replace the worn coupler with a new one, ensuring proper alignment, and reassemble the components in reverse order. Finally, check for any loose connections and test the tractor to ensure the replacement was successful.