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Drain crankcase oil while engine is hot and refill with a grade of oil that will be required when unit is used again. 2. Prepare the mower deck for storage as follows: a. mower deck from the unit. b. Clean underside of mower deck. c. Coat all bare metal surfaces with paint or light coat of oil to prevent rusting. 3. Clean external surfaces and engine. 4. Prepare engine for storage. See engine owner’s manual. 5. Clean any dirt or grass from cylinder head cooling fins, engine housing and air clean