I found the center spot of the chain by measuring the distance between the middle of the front sprocket and the rear sprocket and then placed a paint mark on the bike. I have adjusted mine on a rear stand and then took it off the stand and found that it made almost no difference at all. Before I adjusted my chain the first time at 600 miles I took it to the dealer and he basically showed me how to do it and what to look for. He said to check it several different places on the chain, ie., rotate the chain through several different positions and it should be close . Place light pressure (don't muscle it down) and measure while applying light pressure. He recommended setting the chain at the greater distance (48mm). I took a piece of stiff cardboard and measured down on the cardboard as a template. One other piece of quick advice that the dealer said was that he always felt that having about 25mm of play from up to down on the chain would be about right. That seems correct. Always better a little loose than too tight. After the initial adjustment at 600 miles I check it again at 2500 and 4000 miles and not much changed, maybe at 49-50 mm, but that seems OK. Why not just go to the dealer and ask the service tech to show you how to do it and what to look for. If the dealer is worth his salt they should be glad to do this, as happy customer return in the future. Hope that this helps. Also, torque between 72 and 83 is about right. I found that the shop manual calls for 83. Usually torque tolerance is about 10 percent, so why not use 81.
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