I ordered a service manual from Helm for my (fast red) 2103 F6B. They had both 2012-2103 and 2012-2104 versions of manuals titled GL1800A / GL1800B/BD listed. Since I only have the 2013 model, I chose that version (part no 61MCA61). When it arrived, it was a 2012 GL1800A manual with a sticker to put on the cover that changed it to 2012-2013 GL1800/A model - no mention of the GL1800B/BD. For the standard Goldwing, I am sure that the 2012 manual is fine for the 2013 model year, but of course, the F6B didn't exist in 2012, so the manual does not have any F6B specific information. I called Helm to complain and am waiting "up to 5 days" to be called back so they can determine if they shipped me the right manual.

I will let you know how it turns out, but if you order, I would for sure choose the 2012-2104 version (part number 61MCA63) so you at least have a chance of getting the F6B info covered.

P.S. I haven't opened it yet because I don't want them to tell me I can't return it because it has been opened, but based on the titles I can see, I am confident it does not include F6B information, because I have seen copies where the GL1800B/BD is clearly listed on the title page