Installation is straightforward, but take your time. Check the electrode gap (8)--this Suzuki's should be 0.7mm-0.9mm. Apply antiseize to the threads just below the tip (9); do not apply it to the first thread or get any on the insulator or electrode. Slip the plug back down into the well and begin threading only by hand. Aluminum heads have fragile threads--and the spark plug is steel--so what's going to give is the expensive part if you cross-thread it. Cinch it down by hand and torque to spec (10). Even if you use your torque wrench rarely, this is the time. Follow the service manual recommendations, but in its absence, torque spark plugs with 8mm threads to 6-7 foot-pounds; 10mm threads to 7-9 foot-pounds; 12mm threads to 11-14 foot-pounds. Take your time putting it all back together and be certain that you have the plug wires going to the appropriate plugs and that they seat fully. Listen for the click, click, click as the clip locks to the threaded tip. For individual-coil models, it doesn't matter which coils go where--they're identical--and, usually, the wiring harness is built so that it'll only fit one way. Easy stuff, then.