safety NOTICE The safety messages that follow have NOTICE level hazards. Periodic maintenance prevents unexpected downtime, reduces the number of accidents due to poor engine performance and helps extend the life of the engine. See an authorized Yanmar Marine dealer or distributor if the engine will be operated at high altitudes. At high altitudes the engine will lose power, run rough and produce exhaust gases that exceed the design specification. always be environmentally responsible. Follow the guidelines of the EPA or other governmental agencies for the proper disposal of hazardous materials such as engine oil, diesel fuel and engine coolant.
Consult the local authorities or reclamation facility. never dispose of hazardous materials by dumping them into a sewer, on the ground or into ground water or waterways. If there is a two or three engine installation and only one engine is operating, the seacock of the non-running engine(s) should be closed. This will prevent water from being forced past the seawater pump and entering the engine. The result of water entering the engine could cause engine seizure or other serious problems.
If there is an installation with two or three engines, and only one engine is operating, please note that the propeller shaft thru-hull (stuffing box) is lubricated by engine water pressure and the engines are interconnected. Care must be taken that water from the running engine does not enter the exhaust of the non-running engine(s). This water could cause seizure of the non-running engine(s). See an authorized Yanmar Marine dealer or distributor for a complete explanation of this condition. If there is an installation with two or three engines, and only one engine is operating, it is important to limit the amount of throttle applied to the running engine.
If you observe black smoke or movement of the throttle does not increase engine RPM, you are overloading the engine that is running. Immediately throttle back to approximately two-thirds throttle or to a setting where the engine performs normally. Failure to do so may cause the running engine to overheat or cause excess carbon buildup which may shorten the engine’s life. © 2011 Yanmar Marine International • Rev. 2.0 xxii Yanmar Electronic Control Systems Technical Manual