After several months, from the beginning of this problem, I am finally attempting a repair. Trying to keep it short and simple...
Briggs model 24341 has no spark. Removed engine from tractor (Simplicity 101). Removed shroud and, as suspected, found mouse nest (huge)!!! Sheet metal ring attached to flywheel is completely rusted through at one bolt hole. Installed new points and condenser. Cleaned flywheel magnet and bottom of armature. When spinning flywheel (by hand) I get no spark.
Any suggestions would be much appreciated.