If you look at the drive chain, this is just like the cam chain. So if you put the bike in gear, rolled the bike forward and just held it there without the crank or wheel moving, would you not have a tight chain on one side only? Would you agree that you could not get that drive chain any tighter?

If you now comprehend this simple illustration, you can set your tool on the crank [taught] or back wheel taught and have you loaded that cam chain exactly like the drive chain is now; follow, Houndog and the screwdriver operation so you know the spring is free floating and now no need to push because that burns out the slipper. Simple spring pressure is the tension and you are on that piggy bolt and nut sequence to tighten that baby before you let the back wheel go limp = So will the cam chain go limp a little; is forget that 15° past TDC is someone wrote that shop manual and did not see the drive chain theory is give me a break on that 15 degrees is geezzzzzzzzz iz kill a cat 9 ways.

Bet me I am more quiet in the chain slap in the taught condition. I'm going to walk that abstract of the manual and skin that kitty 8 other ways is watch me work it out.