did not start?

Check the battery to be sure its terminals are not corroded. Clean as necessary.
Remove the starter-motor bolted to the side of the engine block.
Have the starter motor tested at a local motorcycle repair shop. Replace if defective.
Try and remove your fuel line to see if fuel drips or flows out.
If your fuel-valve is good, the fuel should flow out easily.
Remove the spark-plug from the top/side of the cylinder head.
Put the spark-plug into its wire-holder, and place it by the engine block.
Then try and crank up the engine.
watch out if blue lights come out the plug tips.
Repeat this again, and make sure the sparks come out readily, not intermittently.
If there's no spark, then your ignition coil or ignition modlue is bad and should be replaced. To replace it, remove your gas tank, and locate the ignition module attached to the frame by the seat area.
Unscrew the bolts with a 10mm socket.
Replace the spark-plugs and and insert it to its holder.
Then check for sparks again by holding it to the engine block.
Replace the fuel filter as necessary.
Crank up the bike and see it it fires up..