Most likely 1 quart. Check the manual or put some in until it's full.
There is not enough info to ask that question. There are many different models of craftsman mower. Please ask again and include the model of the mower, the engine make and size.
1.36 hp
A deciliter of oil is a tenth of a liter of oil, or 0.1 liters of oil.
200 ltrs