There are three coils used on aluminum crankcase, single cylinder Briggs to convert from breaker point condenser to electronic as follows:
398593/395489/793281 are used on 2hp to 4hp engines, such as 60000, 80000, 90100, Quattro, and Classic
397358/697037/395490/395491 are used on 5hp engines such as 130000 series flat heads
398811/395492/398265 are used on 7hp to 16hp single cylinder engines, such as 170000, 190000, 280000, and 310000.
These do not work on cast iron crankcase engine as these have reverse polarity flywheel magnets.
