Lawn tractor 21.0 hp* 46" mower electric start automatic transmission. Oil Capacity: W/Filter: 56 oz. Simply so, how much oil does a Craftsman riding mower take? The 19.5 hp lawn tractors take 48 U.S. fluid ounces, or 1.5 U.S. quarts, of detergent motor oil at each oil change. The oil must conform to API service classification SF, SG or SH.
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