I've done two things to help with reading the Assy Manual.
One, take a scan or phone pic of the page and then fire up your desktop, laptop or tablet and zoom in. This works really well if your vision is really lousy.
High resolution on the scanner or phone helps a lot.
If you have a good phone you can really zoom in on the pic, as well.
Two, if you have an android phone get the app "Glass Magnifier". You can really zoom in on the fine details of the Assy Manual. This app also allows you to take a pic of the magnified area.