Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Belts exact same length as the old ones? Is the long belt routed through the idlers correctly? Did you check the variable pulley to be sure it turns freely?
I will be here, but look at the manual and the links. Call is extra charge and I don't kno what I can add. Belts will have guides to keep belts in place, are they close to the pulleys, so belt can not be slipped out until moved?