I have to agree, check for spar from the plugs, if your get no spark, then change the plugs and try again. If still no spark check the wires going to your coils then if the wires are ok and your still getting no spark then check/change coils,
If your getting a spark but its not starting then take your plugs out n have a sniff, if they are wet and smell of fuel, check the conditions of the plugs and change if needed. If they are dry then you are not getting fuel into the barrels so you will need to check the carbs out to see if you have a block jet or pipe. or you just need to put fuel in the bladdy tank lol