Raise the tank
Pull the spark plug boots off - be a little gentle, don't have to baby them but don't yank them off.
Can't remember the socket size off the top of my head, but you'll need an extension
I usually look down inside the hole for junk that may have gotten in there before i pull the plugs (so nothing falls in the head). Sometimes even a good idea to give the hole a shot of compressed air to blow out any small crap before pulling the plug.
Remove the old plug. ( I'm a little....OK....a lot OCD and I number the box for which cylinder/plug I'm changing and put the OLD plug back in that box so I can have a historical record of how things looked at that mileage in case I need to start tracking a possible issue related to that plug at a later date.)
Either use a spark plug socket w/ a rubber insert or (what I like to do) get a small piece of rubber hose that fits snugly - not necessarily tight, but enough to hold the plug when dangling) over the insulator of the plug for installation (this will let the plug kinda hang and when you twist the rubber, it will spin the plug and allow it to start in the hole without much force behind it - so you can tell if it's going in the hole easily or trying to cross thread. Spin it until it stops and the plug will be installed. If it doesn't want to start, simply move the hose at a slightly different angle to engage the threads.
Use the socket and extension to snug it down. DO NOT OVERTIGHTEN. I personally don't use a torque wrench I just make them snug. Good idea to put a little dielectric grease on the inside of the boots to prevent them from grabbing the insulator and making it easier to remove at a later date. They actually have little single use packets at the auto parts places just for this.
Reinstall plug boot and move on to the next one.
Lower tank, tighten, and enjoy.
I usually do them in pairs so I can move both plug wires for that coil out of the way to make it easier to get at things. Won't even hurt to pull all six and get them out of your way as long as you pay attention to where they go and put them back in the right place.
BTW, most plugs are pretty close to being gaped correctly, but I always use a "gap checker" to verify prior to installing. You can get them at the auto parts place for pretty cheap too.
