A broken drive belt is the most common reason a dryer won't spin. ... A working belt should provide some resistance, so if the drum turns very easily and loosely, the belt is probably broken. Unplug your dryer and remove the lid so you can inspect the belt to confirm that it's broken.
What would cause a dryer to not spin?
If the dryer doesn't spin, it could be that the rubber drive belt looped around the dryer drum is either stretched out too much and not causing enough friction to turn. The dryer not spinning could mean that you have a broken drive belt.
How much does it cost to replace a dryer belt?
Dryer Belt Replacement
Replacing a dryer belt costs about $200 if you hire a pro, or $10 to $20 for DIY.