It's an interesting problem. Over here in the UK, the great majority of the independent repairers are either ex-company engineers who have gone on their own or family members whose dad teaches them the basics. If we are honest, one washer works pretty much along the same line as any other, so the logic of fault finding is pretty much a given. The real skill of the job is learning the little tricks and nuances of the different brands; something only experience and (now) support from an on-line community brings. In the UK, getting any sort of support for the independents from the manufacturers is almost laughable.
That said, we have Trade Forum members on UKWhitegoods who are quite literally learning the job on the site as they go along - the Mods demonstrate remarkable patience at the repeated obvious questions ("Why doesn't he know that? It's logical...").
We have an Articles section, where common repeated problems (usually from the Public) are documented - linking them rather than typing it all out again is so much easier.
I wish the OP luck - no doubt he can rely on the forum for support as required.