Most likely the problem is a bad oven Bake igniter (#17 on the
diagram).
- The Bake igniter
Part number: AP4041245 
It comes without the mounting bracket. You have to use the old bracket. Be careful not to touch the igniter coil.
Here are the breakdown diagrams and
Replacement parts for AMANA ARG7302WW | AppliancePartsPros.com
Gene.