Hi, 
   My # is 319-290-2522 . The receipt I got from the seller for the repairs done ; Replace crankshaft , replace #3 rod -Labor = $840.00, 1 main bearing SET .010 $157.46 , 6 rod bearings .010 @ $14.22ea =$85.32 , 1 piston ring set $12.81 , 1 head gasket set $107.87 , another gasket set for $59.40 can't read what it's for , oil filter , oil and anti-freeze --- total  $ 1310.61 done on 5-4-04 by Country repair in Le Roy , MN . I bought the tractor on 5-22-04 . I can call to find out if the wrist pins where changed but it doesn't look like( from the receipt)  the pistons where removed this go-round . The seller told me the engine had a major rebuild about 1100 hours ago . ( It now has 4622 hrs on it unless the tachourmeter has been changed . I've put 4 hrs on it ) It supposedly was rebuilt at around 3500 hrs by the previous owner .  The tractor serial # 253-103-676 and model # 675-22491, the engine # 75949 from the alternator mounting pad , the 3-speeds # has a small 0 followed by large 92267 but it looks like the 2nd two has a line through it horizontally. The engine starts very quickly, runs smoothly and quietly with no unusual knocks or rattles and doesn't smoke except under acceleration . I'm sure I could find someone that we deal with through work that could get me a oil analysis done . This is a little long winded but I thought a complete background of events as I know them might be useful . Thanks again -Randy-IA