I just replaced the chain and sprockets on my 2013. That screw was held in with industrial-grade thread locker! I thought I was going to break my hex-key, but it broke free finally.
If you don't have the skookum impact wrench you will most likely need a cheater bar on your socket wrench. The torque spec for the front sprocket is 105 lb-ft, so it's on there good and tight. I used a flat wrecking bar wrapped in rags to lock the back wheel against the rear fork.
2013 DL650A, OEM centerstand, Powerlet outlet, Parabellum windshield with X-screen deflector.