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Well maybe not for free but on a budget! Some of you old timers may already know this trick. I wash my horses & decks alot. Almost after every mowing i wash the tops of the decks off and have underside quick wash connects installed on all of my mowers. The price I pay for all this cleanliness is usually payed back in the form of noisy deck pulleys, idlers & spindle bearings. Hence I have been known to spend a small fortune on pulleys & idlers that, for some, can be 40-to 50 bucks a wack. So after finally figuring out that these things just have common bearings in them that could be replaced if they weren't welded in tighter than a buxom beautie in a brass bra!! Alas no more.... First step is wire brush the offending noise maker so you can identify where it is spot welded together. Usually a dark spot or a dimple marks the spot. Center punch the spot, notice the symetrical patern of the welds. Next drill out the welds starting with 1/8" bit then 1/4". proceed to 5/16' if it appears that 1/4 " did not take out 90% of the weld. Next position the pully on a block of wood and separate the halfs. Use a small cold chisel. It may take a bit of effort to separate them. If the half bend a little they can be hammered strait after apart. Remove the bearing & drive out the bushing if it has one.