It's supposed to be a B48G 19.9 hp. However, the tag on the shroud says B43g. But the serial number on the shroud doesn't match the serial number on the block. I think somebody put another shroud on it and didn't change the tag. The stroke on a B48g is supposed to be 2.875" and the B43g is 2.62. Source, tractordata.com looking at a 982 cc and a 318 jd. I checked the stroke on it when I got it tore down and it's 2.875. I'm assuming it's a B48 g
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