I have just changed the mower belt and it is correctly routed. When the PTO is engaged the belt is tight and the mower blades will turn fine. But when the PTO is disengaged the belt is too slack and I'm afraid it will jump the pulley and damage the belt. The belt can be taken off the pulley with no effort. Is there any way to snug the belt tighter to the pulley.
Thanks.

Hi,
Please note that the left hand cover on the deck is also a belt guide. Close examination will reveal that it has two metal rods embedded in it at fron and rear.
Peace,
Clarke