Small Engines (Lawn Mowers, etc.): briggs electronic ignition, plug gap, ohmmeter

Question
Have several mowers that don't work. Coils have continuity with ohmmeter but no spark.   Assume some electronic component goes bad in these quite frequently.  I wonder if jerryrigging with a capacitor from a points-condenser car system could be wired to solve rather than buying a new part.  If so, which terminal--the shutoff one or some other?

Answer
The coil is 2 windings of wire one thin wire and one thick They represent the primary and secondary circuit.  They are wrapped around laminated steel.  As the  N & S magnets pass through the field electricity is generated.  When the points closed it collapses into the secondary and a spark is generated at the plug gap and then to ground in the cylinder head.  Electronic ignition rep;laces the points, points plunger and condenser. I think they call it a SRC trigger.  Briggs sells a Magnstron kit to change most B&S engines into electronic ignition.  There is not a lot of things to test.  The ignition works or not.  You will get good ones that will last years and others that will not last a season.  All depends on quality control that day.  Hope I helped