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Allen in NE will cringe when he reads this, but I’m going to say it anyway. Before you automatically spend the money for sleeves and pistons (unless you already know they are junk ie rusted etc.), check out the wear on both, especially if the tractor won’t be put to daily use. If there is little ring ridge on the top of the sleeves, the sleeves are worn less than 0.003” and have less than 0.002” taper and the pistons look good and ring grooves aren’t worn much, just put in new rings and hone the sleeves. This will save you some money, you will get a good learning experience, and you will have a good solid SM when you are done. You need to make the call if the expense for sleeves and pistons is justified by using the tractor afterwards. One caution though, you do need to make sure that the ring grooves on the pistons are clean, and that you have a good hone to cross-hatch the cylinder walls. There are ring groove cleaning tools available, but you can just break an old ring and use that to clean the carbon out of the grooves.
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