K4 designation was used for both 1972 and 1973 model years. Even though this manual shows the date of 1972, it shows the pictures of the 1973 model year. The only way you can tell the difference is the sidecover badge shown in the picture. It is in excellent condition, and includes a pull out wiring diagram. Specifications are necessary for a serious owner to do tuneups.
Note: My shipping calculator for the ordering process sometimes does not handle postage properly for light items like a manual. So if your shipping to the lower 48 US States shows more than $9, don't worry, I will rebate the difference.