There going to make Gator Blades for about every mower made today but that doesn't mean they will work the way there designed to work and the fact they the Fusion Blades can cost about twice what the 3 in1 blades cost doesn't make them twice as good. The problem you will have is that if the engine on that craftsmen is the 140 cc the blades are not going to have enough BTS to work correctly. Your cut probably wont be as good as you have now. I've used the Gator Blades on all my mowers at one time or another 7 different mowers, self propelled included. I put them on mowers with the 190cc engine and guess what, They don't work, all they do is clump grass and make a mess because the mower doesn't have the BTS to discharge the grass fast enough or correctly. Now with the Turf-Master they work like a dream but that's with an 18 to 18500 BTS where there designed to work.