Ho spark on a pb 403t backpack blower

Be sure you have no spark ( 90% of the units that come into my shop for repair with the complaint of no spark- have a fuel issue). Be sure the spark plug is good.
If no spark then remove the ground wire from the module and check for spark again. You must use the recoil starter- spinning by hand is not sufficient. If still no spark then replace module. If there is spark with the ground wire disconnected then there is a problem with the kill switch or a bad wire.

Well obviously you need to check the spark plug for fire. Try the old one first, then a new one. If you still don't have fire, then you probably burnt out the coil.

Jim