My 16" homelite chain saw will not run, it is not getting spark. Any ideas on what to check?. We are here in south western NYS and we are in a state of emergency due to the bad storms here and i still have 4 trees to cut that were snapped in 2 and are across my driveway. I have a backup but no backup for the backup and the backup is only a 12". Help. Man i am tired....