PERIODIC MAINTENANCEYM Series Operation Manual 7112/05Adjusting the Alternator V-ribbedbelt TensionSee Checking and Adjusting the AlternatorV-ribbed belt Tension on page 62.Cleaning the Breather PipeConsult authorized Yanmar Marine dealeror distributor.Checking the Wiring ConnectorsConsult authorized Yanmar Marine dealeror distributor.Perform the following maintenance every1000 hours or 4 years of operation,whichever comes first.• Checking the Fuel Injection Timing• Checking the Fuel Injector SprayPattern• Replacing the Seawater PumpImpeller• Cleaning and Checking the SeawaterPassages• Checking the Diaphragm Assembly• Replacing the Alternator V-ribbed belt• Adjusting Intake / Exhaust ValveClearance• Checking and Adjusting the RemoteControl Cables• Adjusting the Propeller ShaftAlignment• Tightening All Major Nuts and BoltsChecking the Fuel Injection TimingConsult authorized Yanmar Marine dealeror distributor.Checking the Fuel Injector SprayPatternConsult authorized Yanmar Marine dealeror distributor.Every 1000 Hours of Operation
