Cleaning a fouled spark plug is an easy task. You can use a piece of sand paper to clean the edge of the plug. If you don't feel comfortable doing this there a number of solvents on the market that you can use to clean the plug . You may want to use some lithium grease on the threads and the boot of the wire before you put everything back together. Check out
. www.cyclespot.com/forums/showthread.php?t=7182 for info.