R1100RT throttle & choke cable replacement 

Chris harris has video showing this replacement. He indicates that the junction box only comes out or is suppose to come out on the RHS. He also swears at it and the designer quite a bit.

Thank you for this video, I'm about to do this on my 2000 R1100RT at 60 some thousand miles. The clutch cable almost gave a couple of weeks ago while I was on a 512 ml two-day loop in NJ. I was 80 miles into the ride when the clutch started feeling funny and had lots of play. I could feel the strands snapping when I pulled in the lever. I made it back to Baltimore on one strand of the clutch cable. The throttle still works but it seems much harder to pull nowadays, it's also 21 years old so I'm replacing everything. One thing I'm going to try is to mark each cable with a small piece of tape at the box end then attach them (tape them with electrical tape) to the old cables and pull them through to the box. My two cents. Engineers make service level recommendations based on the expected life expectancy of parts. By adhering to these guidelines you can continue running down the road without failure, or at least reducing the chance of failure to a minimum.

How many hour you think it would take to replace the cables?.

I disagree with your statement about replacing them even if they are still working okay. A throttle body sync only takes 5-10 minutes, which will fix any stretching of the throttle cables. Much simpler, cheaper, and better that replacing cables (Especially since you need to do a throttle body sync anyways once replacing). Nice video to show how to change them though.