My Bosch Dryer wte86300us is not tumbling

If you reach into your dryer to remove clothes only to find that they’re still soaking wet, or you notice that despite being “on,” your dryer refuses to tumble, it may need some maintenance. Most common problem is the drive belt. The dryer drive belt turns the dryer drum when the drive motor turns. If the drive belt breaks, the motor runs, but the drum won't move. Today we will change the driver belt in dryer Bosch wte86300us. Follow the instructions to do it right. 

1. Shutting off electricity. 
2. Pull the lint screen out of the housing in the top panel of the dryer. Use a Phillips screwdriver to remove the 2 screws that secure the lint screen housing to the top panel. To release the clips that lock the top of the dryer in place, push a putty knife under the lid near the left and right edges of the front of the dryer. Lift the top and prop it securely against the wall behind the dryer.
3. Use a slot screwdriver to release the locking tab on the wire harness plug for the door switch. Disconnect the wire harness. Use a 5/16-inch nut driver to remove the front panel mounting screws from the inside of the cabinet. Pull the front panel forward slightly, and then lift and unhook it from the 2 bottom hangers.
4. Remove the old drive belt.
5. Position the new drive belt on the dryer drum. Lift the front of the drum to access the drive motor and idler pulley. Thread the drive belt through the idler pulley. Push the idler pulley to the right and loop the drive belt over the motor pulley.
6. Position the front panel on the hangers at the bottom of the cabinet. Line up the mounting holes and reinstall the screws in the top of the front panel to secure it to the dryer cabinet. Plug the wire harness back into the plug on the door switch. Make sure the locking tab engages properly.
7. Lower the top panel and snap it into place. Reinstall the screws in the lint duct housing and reinstall the lint screen.
8. Connect the dryer with power outlet. 

Done! If this doesn't work, there could be a defective part that requires a replacement, and you may need to consult a professional.