Yanmar 4JH45 Operation Manual

Also see for 4JH110: Operation manual Operation manual Operation manual

Contents

Yanmar 4JH45 Operation Manual Manual pdf 92 page image

PERIODIC MAINTENANCE84 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 the high-pressurediesel fuel spray caused by a fuel systemleak, such as a broken fuel injection line.High-pressure fuel can penetrate yourskin and result in serious injury. If you areexposed to high-pressure fuel spray,obtain prompt medical treatment.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 separator forpresence of water and contaminants. Ifyou find any water or contaminants,drain the fuel filter/water separator. SeeDraining Fuel Filter/Water Separator onpage 91. If you have to drain the fuelfilter/water separator frequently, drainthe fuel tank and check for thepresence of water in your fuel supply.See Draining the Fuel Tank on page 85.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 36 , Engine Oil on page 41 andEngine Coolant on page 45 to check theselevels.