If you're talking about the sparkplug - don't know of any other - you do not need to remove the tank etc, get the correct spanner / wrench, some parts dealers will supply a plug wrench with a knuckle, this mqakes it real easy to install and remove.
Do not overtighten the plug.
remove the plug from the right side of the motor, just above the pipe.. use a 13/16 open end/closed end, or a ratcheting one. Use the wrench to pry off the black cover thing, and then just use the wrench to loosen. Its a pain because of the little movement
I remove the plug for the left side of the bike with a plug socket that has a hex head on the top for a 17 or 19 mm (don't remember which one) open face wrench. Only thing you need to remove is the plug wire . this is on an H series bike not sure if its different on a late model bike.
Your bike not come with a plug wrench? Mine did, it works like a champ from either side. The wire will come off without tools, and the wrench makes quick work of the plug.
32:1? Most full-syns you can run up to at least 50:1. I'm running Bel Ray H1R (full synthetic) at 40:1 (with proper jetting) and it runs great. I used the same oil at 50:1 on my old ATK 260.
As John said above...there is a plug wrench supplied with the bike when new. It has an open top that makes changing the plug a breeze on or off the trail. I'm sure you could get one from the dealer.