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Josh, Its not uncommon to find gas in the crankcase. Usually the carb float is leaking and allowing raw gas to seep into the cylinders, past the rings and into the crankcase. Rebuilding the carb and installing a new needle/seat fixes the problem. Its good insurance to use the fuel shut-off at the tank when you are done for the day. Later models (including the later 50's) had an automatic fuel shutoff that used engine vacuum to open the valve. These automatic valves sometimes developed cracks in the diaphram which allowed raw gas to flow down the vacuum line and into the engine. If you are curious about the condition of the rings, the easiest thing to do is a compression test. Low compression does not necessarly mean the rings are bad. You might have a leaking or mis-adjusted valve. However, good and equal compression in both cylinders (both within about 10% of each other) suggests that everything, including the rings are in good order. When running the compression test, remove both spark plugs. Leave the ignition switch off. Make sure the choke and the throttle are both open. Crank over a few revolutions until the compression stops rising. I beleive you will find a good engine compression reading to be around 115 psi. Its also not uncommon to have some condensation build up in the crankcase. This is usually blown out the vent as steam once the engine gets warmed up. Generally speaking its a good idea to crank the tractor up and run it till it reaches operating temp to help prevent too much condensation build-up. Best of luck,
John
1953 Model 50
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