Dryer not heating / drying clothes

My Whirlpool Dryer (Model # LGR8858EQ2) starts up and runs fine, but doesn’t heat/dry the clothes. It is more than 10 years old. I clean the dryer lint before every load.
Any advice to check for (and fix) common problems by myself will be greatly appreciated!!
:confused:

You may want to start the troubleshooting from checking for continuity the thermal fuse (#7 at the [B]diagram[/B]).

Here are the breakdown diagrams and http://www.appliancepartspros.com/partsearch/model.aspx?model_id=246761

Gene.