No need for a schematic, there are two kenmore dryer belts, 'full size' or 'apartment size', if it is a belt you will be able to here the motor racing unloaded, turn heat to cold before testing, dont want to blow a thermal fuse.
Kenmore dryer comes apart from the front,
- UNPLUG dryer 220V is not fun
- remove the lint screen
- remove the screws under the lint screen holding the case top to the screen holder
- with a putty knife or other blunt blade release the catches at the front corners of the top and raise top
- remove screws holding front of case on, from inside the dryer
- remove door switch cables
- lift front of case off and set aside,
- can reach motor, belt, felts and rollers.
- broken belt will be obvious, lying on the floor
If belt is broken, examine rollers and felt bearings for wear, stuck rollers or no felt left, is the most common cause of belts breaking, extra tension is required to spin the drum, If damaged replace them, they are cheap and easy to do, and it woud be no fun if another belt broke quickly
reasemble after repair in reverse order.