Level of DifficultyA Bit Difficult
Time to do repair1- 2 hours
Age of Appliance5 - 10 years
The instructions on your site and the diagrams of the machine made the job a lot easier than doing it on your own.
I would not have thought that the coupling could cause the problem but since it was the easiest of the options i tried replacing it first since it was the lowest cost part and the easiest to replace.