Manually turn the engine over until the points are closed.
Turn the ignition on.
Push the point contacts open with a screwdriver with a nice spark-proof handle, and look for a decent spark as the points open.
If no spark at the points, you will need a test light or multimeter, and start testing for voltage moving from the coil towards the the ignition switch.
Do you have a ballast resistor? They can go bad and leave you with no spark.
C
