I have been messing with this satoh s370d for 3 months. I got it at an auction with loader and rear blade fir $675. I dont know the year or how to find out the year and they didnt either. The tractor sat in a field long enough for the wheels to get buried 1/3 of the way. The only time i have gotten it to start it was over 60 deg out using wd40. Compression was at 300 and 280. I replaced the pistons(1 had a broken ring groove) now compression is at 350 but should be higher. Question, I have been told that if someone used starting fluid it could have cracked the head. Will a cracked head cause low compression? When i have had it running it wasnt mixing oil and antifreeze.