If You Haven't Already:
Go to automatice.org and download the 1966 Maytag full-line brochure. Cost is only $3.33, and the scan quality is phenomenal. It's so good, in fact, that I was able to zoom in and read every button and dial setting on the 806 pair I'm getting.
The brochure has a full run-down on the 906s, including specifications. And the photos qualify as washer porn; they're impossibly beautiful and inspire raging lust, LOL.
The instruction card for your 906 is also available there.