Per PB-265 the following is what you for your engine. 25 hp uses a different setup.
For 22 hp or 23 hp Engine Specifications 66XXX, 67XXX, or 76XXX
Order kit 24 755 307-S from your source of supply.
This kit converts the engine from ASAM ignition to CDI (capacitive discharge) fixed ignition.
The conversion kit includes two new ignition modules, new flywheel, duplex lead, and installation instructions.