Norm,
Thanks for that. Yes, confirming that I can't undo the nuts of the front two pulleys because the shafts of the bolts rotate, and the heads of the bolts are both hidden under the plate and are round. I know of the dome-headed bolts with the square-keyed shaft that you mentioned (like some blade bolts) and no they aren't dome heads. From what I can feel the heads are about the dimensions of a normal bolt but without the flats that you'd apply a spanner to. I'm going to try making up some wedges to jam the heads with to avoid cutting. Once I get the pulleys off I'll try to drill a hole to weld the heads from from the accessible side.
That still leaves me with the problem of replacing the pulleys. Like I said above - these pulleys do not show in the IPBs and so I can't get a part number for them. And one of the pulleys is distinctly smaller than the available rear pulleys. From what I can estimate, putting a standard pulley in place of the small one would leave too small a gap to the mower side frame to get the belt in.
So, are these front pulleys a standard fit to Evo 3 mowers? If so, they should be in the IPB and there should be part numbers for them. If not, how do standard Evo 3 mowers accommodate the approach angle at the rear pulleys?
Cheers
Matt
