Originally Posted by Bryanser
I was attempting to replace both belts. I removed the idler pulley assembly and now while reassembling everything the idler pulley contacts the flywheel. Since the idler pulley assembly is spring loaded I assume the spring must be under tension when installed, but I do not know how much tension is required, to prevent the assembly from contacting the flywheel.
The assembly contacts the clutch drum so as to stop the blade from turning when the clutch is disengaged. When the clutch is engaged the assembly pulls away from the drum and applies tension to the belt, to engage the blade drive.
If you removed the idler pulley bracket from the mower deck, then the spring tension on the assembly will have to be reset, otherwise it should still be alright.