How to Change BMW Gear Oil


1. Set your motorcycle on its center-stand. Almost all BMW motorcycles have one; but if yours does not, prop it up so that the rear wheel can be removed.
2. Use a socket wrench to remove the mounting bolts of the rear fender if your bike is so equipped. All GS models have a fender held on by two mounting bolts while other models don't have one at all.
3. Remove the rear wheel by loosening and removing the five lug nuts with a socket wrench. Use a Torx wrench to loosen and remove the brake caliper bolts. Allow the brake caliper to hang from the frame of the motorcycle.
4. Remove the two speed sensor mounting bolts behind the brake rotor with a Torx wrench. Let the speed sensor hang from the frame with the brake caliper. Set an oil drain pan beneath the oil drain bolt at the rear of the swing arm.
5. Use a Torx wrench to remove the oil drain bolt. Oil will come out of the swing arm. Allow the oil to drain into the pan until there is none left in the swing arm. Replace the oil drain bolt and tighten it to 40 Newton meters (Nm) using a torque wrench.
6. Use a measuring cup to measure out 0.22 liters of gear oil. Pour the oil into the swing arm through the right speed sensor hole, where you removed a bolt previously.
7. Reattach the speed sensor with the two Torx bolts removed previously. Reattach the brake caliper to the swing arm using a Torx wrench. Use a socket wrench to reinstall the rear wheel and tighten the lug nuts. Reattach the rear fender with the two fender mounting bolts removed earlier.