Thank you for your question and I understand your concern.
The "thermal limiter" for the dryer is located on the inside wall of the rear panel of the dryer. You will need to remove the top of the dryer to access the "thermal limiter". I added an image showing where the thermal limiter (key#36) is located.
NOTE: Disconnect the power cord from the power source before removing the top of the dryer.
thermal limiter #134120900 for Kenmore model 417.797812704
can be ordered from Sears Parts Direct.
I hope this is helpful. If I may be of further assistance as more details become available, please reply to this post.