2. Inspection and adjustment152. Inspection and adjustment2.1 Periodic maintenance scheduleThe engine periodic inspection timing is hard to determine as it varies with the application, load status,qualities of the fuel and lubricating oils used and handling status. General rules are described here.{ : User-maintenance Å : Parts replacement z : Shop-inspectionSystem Item Beforestarting* 2 Initial50hrs. orone month*2 Every50hrs. orone month2 Every100 hrs. ortwo months* 2 Every250 hrs. orone year* 2 Every1000 hrs. or4 yearsWhole Visual inspection of engine outside {Fuel systemCheck the fuel level, and refill {Drain the fuel tank { {Drain the fuel filter {Replace the fuel filter ÅCheck the injection timing zCheck the injection spray condition z*1LubricatingsystemCheck the lube oillevelCrankcase {Marine gear {Replace the lubeoilCrankcase Å ÅMarine gear Å ÅSail drive Å ÅReplace the engine lube oil filter. Å ÅCoolingsystemSeawater outlet{DuringoperationCheck cooling water level {Check the impeller of the coolingwater pump (seawater pump) { ÅReplace the fresh water coolantEvery yearWhen long life coolant of a specified type is used,replacement period of two years can be obtained.Clean & check the water passages zAir intakeandexhaustsystemClean the element of the air intakesilencer {Clean the exhaust/water mixingelbow {Check the exhaust gas condition{DuringoperationDiaphragm assembly inspection z
