Yanmar 3JH5E Operation Manual

Also see for 3JH5E: Operation manual Operation manual Operation manual Operation manual

Contents

PERIODIC MAINTENANCE70 JH Series Operation ManualPERIODIC MAINTENANCEPROCEDURESWARNINGExposure Hazard.Always wear personal protectiveequipment when performing periodicmaintenance procedures.Daily ChecksBefore you head out for the day, makesure the Yanmar engine is in goodoperating condition.NOTICEIt is important to perform the daily checksas listed in this Operation Manual. Periodicmaintenance prevents unexpecteddowntime, reduces the number ofaccidents due to poor engine performanceand helps extend the life of the engine.Make sure you check the following items.Visual Checks1. Check for engine oil leaks.2. Check for fuel leaks.WARNINGPiercing Hazard.Avoid skin contact with thehigh-pressure diesel fuel spraycaused by a fuel system leak, such asa broken fuel injection line.High-pressure fuel can penetrateyour skin and result in serious injury.If you are exposed to high-pressurefuel spray, obtain prompt medicaltreatment.Never check for a fuel leak with yourhands.Always use a piece of wood orcardboard. Have your authorizedYanmar Marine dealer or distributorrepair any damage.3. Check for engine coolant leaks.4. Check for damaged or missing parts.5. Check for loose, missing or damagedfasteners.6. Check the electrical harnesses forcracks, abrasions, and damaged orcorroded connectors.7. Check hoses for cracks, abrasions, anddamaged, loose or corroded clamps.8. Check the fuel filter / water separatorfor presence of water andcontaminants. If you find any water orcontaminants, drain the fuel filter /water separator. See Draining FuelFilter / Water Separator on page 76. Ifyou have to drain the fuel filter / waterseparator frequently, drain the fuel tankand check for the presence of water inyour fuel supply. See Draining the FuelTank on page 71.NOTICEIf any problem is noted during the visualcheck, the necessary corrective actionshould be taken before operating theengine.Check Diesel Fuel, Engine Oil andEngine Coolant LevelsFollow the procedures in Diesel Fuel onpage 34 , Engine Oil on page 39 andEngine Coolant on page 43 to check theselevels.