Head bolts torque to 25nm or 18.4 ft.lbs.
Rocker cover bolts torque to 10nm or 7.4ft.lbs.
If you need to pop the rockers off to get to all the head bolts they also torque to 10nm or 7.4ft.lbs.
You'll need to remove the fuel tank to get to them. Be careful removing the line from the plastic tube coming from the fuel pump, snapping it off is a $200 mistake
Plug that with a 1/4" or 5/16" vacuum cap. Put a cloth over the front of the tank before you lift if off to prevent chipping the paint on the nacelle as it comes up. Pay attention to the throttle cable routing before you take the tank off so you can put it back the same way.
The rocker covers come right off. The bolts are different lengths so pay attention.
There are 6 cylinder head nuts and I think some of them are down in recesses filled with oil. Easy enough to find, just put the socket down there on an extension. If you're in warranty and this doesn't fix it just get to the dealer. If you're out you'll need a new head gasket and exhaust gasket. Once the tank is off remove the throttle body and the exhaust. After that it's super easy to take the head off. Don't drop any nuts down into the engine
Scott