As A fellow K7 rider, I feel your pain. There is so much less resources on the K7. You certainly have to dig more for the information, but it is out there. Cyclrider's link is the best source I have found, though those schematics are surprisingly missing some things. (the rear axle castle nut for example)
I have learned whenever I find something about a K0-K6 to then doulble check that it is applicable to a K7. Yay.