I am still making friends with my new CTX 700 A/D. It is new to me although it is a 2014 with 5500 miles. In reading the owner's manual, it says this procedure (adjusting the drive chain slack) requires a special tool. I suspect that this has to relate to the wheel speed sensor (just a guess). Reading Section 3, pages 13 through 16 on my downloaded Service Manual I see no mention of a special tool required for this procedure. Has anyone had any experience in this area. good or bad let me know. Thank you.