I did not find the Clymer's service manual download on this site, but here:
http://www.myacrobatpdf.com/2122/suzuki-ls-650-savage-86-a-04---service-manua... This was the first result returned when i googled 'Clymer's suzuki savage service manual'.
In my ignorance I presumed that this manual for the 86-04 models was out of print and was offered to this myacrobatpdf.com site by Clymer's as a public service. This may not be true. I submitted a query to the myacrobatpdf.com people asking about the legality of this download and have received no reply.
I did find that Amazon is offering a 86-07 models manual. I ordered one of these, but it is backordered and will not be available until after Dec. 25. At any rate, my conscience is now clear.
As for the my clutch problem, on further thought I doubt that the slipping is due to the push rod length. I can see how a longer push rod might correct incomplete disengagement of the clutch, but I don't see how it would affect slipping when the cable has free play when the clutch is engaged.
I think it's the clutch springs that have gone weak after 13 years or the plates are contaminated by energy-conserving oil/warped by an previous owner unskilled with a clutch/otherwise screwed up.
I'll start by measuring the springs and seeing if they're within the service limits.
If not, I'll install new springs and give that a go.
If that doesn't work, I'll drain the Mobil 1 full syn and try a good dino diesel oil like Rotella 15W40 which has a long track record in wet clutches. Diesel oils are high in detergency and may clean up the plates.
If that doesn't work, then I'll go to the clutch plates.
I see that EBC offers springs that are 10% stiffer than OEMs. Anyone have any experience with these?