So I just checked the manual, and they seemed to have made a mistake. In the Periodic Maintenance section (2-51) it says: "Remove Spark Plugs: (see Spark Plug removal in the electrical system chapter).
I looked that up. Here's what it says: "Spark plug removal: Refer to Spark Plug Replacement in the Periodic Maintenance Chapter."
Even the manual isn't much help for this. I guess, its all hands on experience from here. Sorry I couldn't help much. Best of luck to ya!