craftsman rider....belt keeps slipping off

[drdangerousmd]

4-5 year old crafte\sman riding mower...………..belt kept slipping off so I got a new one. It slips off too. Something needs adjustment, but I cannot tell what? any ideas?

 

[shiftsuper175607]

Not me, I can't even tell what model it is...
Can you help me?

Then I could look at some manuals and maybe figure out something.