Yo wil need to check your belt tension and if it is worn. If so it will need to be replaced. Lift felt on platter and and lift the platter section off the unit by putting your thumb and forefinger through the two large holes and pull upwards.There should not be any special routing for the belt and should go directly onto the spindle motor to your platter. Place the belt around the inside rim of the platter while it is still off the unit. Now replace the platter and move the platter around until you see the spindle motor through one of the holes. Use some tweezers to manouvre the belt onto the spindle motor. On some units you will have to lay the belt out inside the unit, replace the platter and manouvre the belt onto the platter. Hope this helps