Helm Inc. is the source for the official service manual here in the USA. I don't know if they also provide for other countries. There are many other sources that have pirated photo copies for much less cash. Officially a forum moderator or administrator (and perhaps even any of the membership... technically) cannot recommend non-official copies of anything for legal reasons. I'm just saying they are out there.
This link is to the SM for both Standard and Deluxe models in the USA.
prior and current bikes:
1973 Harley Davidson 125 dual sport- sold
1997 Kawasaki Vulcan 750- sold
1990 Honda Gold Wing GL1500- sold
2005 Suzuki Burgman 650- sold
1998 Honda ST1100- sold
2014 Honda CTX1300A (U.S.A. Ion Blue Deluxe)-sn: 489 - sold 2013 White Suzuki Burgman 650 ABS
2003 Honda Metropolitan CHF503 (wife's ride) flickr photos of CTX1300A
Yep, that lone state of Maine is where I owned my first mc.