PERIODIC MAINTENANCETNV Operation Manual 97Perform the following maintenance every 2000hours of operation.• Check and Replace Fuel Hoses and EngineCoolant Hoses• Lap the Intake and Exhaust ValvesCheck and Replace Fuel Hoses andEngine Coolant HosesRegularly check the fuel system and enginecoolant system hoses. If they are cracked ordegraded, replace them. Replace the hoses atleast every two years. Consult your authorizedYanmar industrial engine dealer or distributor toreplace fuel hoses and engine coolant systemhoses.Lap the Intake and Exhaust ValvesAdjustment is necessary to maintain propercontact of the valves and seats. Consult yourauthorized Yanmar industrial engine dealer ordistributor to lap the valve seats.Every 2000 Hours of Operation
