You print off the pages you need, and you get those dirty, not the ONLY paper you copy you have. I used to do the hard manuals too, until I realised the ones I ALWAYS used like valve covert tightening sequence (I used to do roller rocker adjustments on my gen 2) and wheel hug tightening (gen2s are notorious for having those lossen) were getting pretty stained from dirty hands. Then when I got electonic for my gen 3, I just printed out the pages for what I was working on and would throw them away if I ruined them during the activity.
If anyone needs a copy of a gen 3 service manual (03-06), I got a couple of spares I will sell. $35 A copy shipped.
Jon