This is a pictorial of the 12K service on the R1200GS Wethead. The GSA/R/RT and RS are all basically similar. It is not 100% complete, but gives you enough of the basics to do your own if you have some basic skills. Here is the service schedule for the 12K: Starting with the bodywork, IF you are doing your air filter. The GS is here: GSA and RT bodywork videos are here: https://www.youtube.com/channel/UCe9ldcMvw4zsXbUaYrDc_Fw I would be happy to film the RS and R if someone local wants to donate their bike for it. Removing the filter can usually be done by only removing the tank cover. Depending on the bike it can be that simple. See the above videos. Most bodywork screws are T-25, with the center tank cover being T-30. [/URL ] My air filter looked like this: [/URL ] Next onto the oil. Drop the bash plate if you have one, T-20 Torx. Then use a 10MM Allen to remove the plug. [/URL ] Check the plug for gritty metal particles. It should feel soft like a paste. Install the plug and torque to 42 Nm. Now pull the filter and change it: Don’t forget to make sure the seal comes off, and clean the mating surface. [/URL ] Add a bit of oil to the seal and reinstall to 11NM [/URL ] We will refill after checking the valves. Next we check/adjust the valves. Remove the crash guards, or other protection. Then remove the valve covers. Make sure you take off the wire covers first. T-25 Torx for the covers. [/URL ] Then remove the wire from the stick coil with a flat blade screwdriver: [/URL ] Next pull the stick coil. I used a Marc Parnes puller. [/URL ] Then use a 14mm spark plug socket and remove the plugs. [/URL ] Now pull the valve covers. You will lose about 1-2 oz on the right side, and 4 oz on the left side. If you are doing valves without an oil change, catch the oil in a clean container and pour it back in after you are done. [/URL ] Left and right: [/URL ] Now rotate the engine using the rear wheel in 6th gear to reach Top Dead Center. This is how you tell. Flats aligned with the bar codes opposite each other. This is the same on both sides. [/URL ] The specs are: Intake .10 - .17 mm Exhaust: .34 - .41 mm Intakes are on top: [/URL ] Make sure the lobes are facing away from the engine. Check between the lobe and the follower. [/URL ] [/URL ] See the feeler come out behind the cam. Make sure it is lined up with the cam. [/URL ] Exhaust valves are similar, but from the bottom up. Pop off the rubber cover, and check your clearances: [/URL ] If the feeler doesn’t fit, go one size smaller. If it slips in easily, try the next size up. Record your measurements. Mine: [/URL ] Note that my clearances were good except for the left intake right valve. Since this is the case, I needed to change the shims. To do that, the cams need to come out. Since my right side exhausts were at the minimum, but still in spec, I did not change shims there. I will go back in in a few thousand miles and see if they move. Then change them.