I recently developed the Hard Start When Hot condition. I reading several forums I find that I purchased the BMW model that has the most expensive repair costs. I am a mechanic and as long as I have the some instruction, I 'm not afraid to some repairs myself. I have a updated harness on order from Hermy's Triumph BMW. (Those guys are great by the way). I was looking for input on obtaining a repair manual. I have looked on Amazon and was leary on purchasing some of the less expensive listings. Appreciate any feed back.
The only official repair manual is the BMW RepROM, which comes on a DVD. The only legal source is your BMW dealer. They cost around $100 and are worth the money. You will need a Windows computer to run the RepROM software. I run it in a Windows virtual machine (using VMware Fusion) on my Mac laptop.
The other sources are illegal, bootleg copies of various versions of the RepROM, some of them so old that they are on CD. Changes are relatively minor between versions, but there was one critical change when BMW reduced the amount of oil to put into the final drive.
Please don't support those scum who sell the illegal copies.
Unfortunately there are no third-party repair manuals (like Clymer or Chilton) for the "slant 4" 2006-2008 K1200GT or the K1300GT. (... or the K1600GT). If you see one, the seller doesn't realize that it is actually for the earlier "flying brick" model 2004 and earlier K1200GT/K1200RS, which is a very different motorcycle.
There is a lot of help on the internet. Besides this bmwlt.com website, see also k-bikes.com and i-bmw.com. Both websites have a variety of helpful procedures with photos, and active discussion groups where you can ask for help. The activity on both sites is dwindling as our K1200GTs and K1300GTs get older.
Join the BMWMOA (BMW Motorcycle Owners Association). Their website is full of excellent repair procedures with photos. You also get other great benefits, including the "Anonymous" book of BMW owners around the country who are willing to help you out in a pinch. I have never used it, but always feel so much better having it when I ride long distances.