Yesterday I had some problems with the starter spinning out at the first sign of ignition but finally was able to keep at it to start the motor and ran it for over an hour. Today there is no sign of motor fire so I checked for spark and don’t seem to have any at all 3 plugs. Any quick suggestions to start to check? Kill switch /lanyard is in the run position. I know I may need a new starter but it spins the flywheel fine just not getting spark.