This demonstration guide answers one field question about a discontinued coil with no documented substitute. Measurements come before parts, and the notes are not a generic equipment FAQ.
Diagnose before replacing parts
Start with supersession lookup. That reading separates a discontinued coil with no documented substitute from adjacent faults that share the same complaint.
If the measurement is out of spec, treat the coil or engine as the primary path. If it is in spec, do not replace the coil or engine just to complete a parts list.
Repair the failed system
The usual correction is the coil or engine, installed to the documented spec for this complaint.
A demonstration shop records the finding so the next technician is not repeating a guess about a discontinued coil with no documented substitute.
Stop before you make it worse
Do not rewinding a coil with unmatched wire. That shortcut hides the original measurement and creates a second failure.
If the machine still fails after the coil or engine is corrected, convert the visit to a broader diagnosis rather than stacking parts.
Written and published by Ridgeline Small Engine.