Assembly Instructions23PREOPERATING CHECKLISTBefore operating the mower for the first time, and asa routine before daily operations, it is important tomake sure the mower is properly prepared andready for operation. The following is a list of itemsto be checked. (For a mower with frequent opera-tion, some of these items will not need to be checkedevery day, but the operator should be aware of thecondition of each.)For proper fuel and lubricants refer to Specifications.FILL FUEL TANKRaise the mower body and locate the fuel tank ontop of the engine.Fill the fuel tank using clean, fresh automotive gradeunleaded gasoline (87 octane rating minimum).DANGERHandle gasoline with care. Gasoline ishighly flammable and its vapors are explo-sive. Use safe refueling procedures:• DO NOT fill fuel tank with the engine run-ning.• If the engine is hot, allow to cool beforerefueling.• Use an approved fuel container.• Fuel the mower outdoors.• DO NOT smoke while refueling.• Avoid spilling fuel; use a funnel or spout.• DO NOT overfill the fuel tank; fill up toabout 1 in. (25 mm) below the top of tank.IMPORTANT: DO NOT permit dirt or other foreignmatter to enter the fuel tank. Wipe dirt from aroundthe filler cap before removing. Use a clean fuel stor-age container and funnel.IMPORTANT: DO NOT mix oil with gasoline. Al-ways use fresh, automotive grade unleaded gaso-line. DO NOT use premium, white, or high-test gas-oline. DO NOT use additives, such as carburetorcleaners, deicers, or moisture removing agents. DONOT use gasoline blended with methyl alcohol.CHECK ENGINE CRANKCASE OIL LEVELCheck the engine crankcase oil level before use andafter each 5 hours of continuous operation. Referto LUBRICATION for Checking Engine CrankcaseOil Level in Maintenance Instructions.CHECK AND SERVICE ENGINE AIR CLEAN-ER SYSTEM• Check air filter restriction gauge to make surethe yellow indicator disk is in the safe operating(green) range.• Check condition, cleanliness, and security of thecomplete air filter element (clean air filter every100 hours). For detailed procedures, refer toCLEANING the Engine Air Cleaner System inMaintenance Instructions.CHECK ENGINE COOLING SYSTEMCheck that the engine cooling air intake screen isfree of obstruction by grass clippings or debris andclean if required. Also, cylinder head cooling finsshould be inspected and cleaned if any build-up ofdebris is noted (remove cylinder head shroud toclean).Check performance of the cooling system by start-ing the engine, holding a hand adjacent to the cylin-der head, and feeling the cooling airflow.DANGERMake sure to keep hands clear of exhaustpipe, muffler, and moving parts whenchecking airflow.CHECK GEAR AXLE OIL LEVEL (if equipped)Refer to Gear Axle Lubrication in Maintenance Instructions.