It seems like it isn't? Take the plug out and ground it on the motor and turn it over to make sure. If it isn't getting spark, then start checking the ignition components to make sure they are getting power. If they are getting power, then test the components that you can do a direct resistance test on. I would recommend getting a repair manual for testing specs and instructions.
Yours truly, sincerelly, love always, Josh aka The DirtDemon.