Operation pipes. After any air in the oil lines has been expelled, the oil injection system should supply oil normally. If no oil is flowing after 10 minutes of idling, consult your Yamaha dealer. changing in recent years in response to con- cerns about pollution and resulting emis- sions regulations. One of the most obvious changes has been the elimination of lead from most fuels. As gasoline has changed, the amount of ad- ditives such as aromatics and oxygenates has increased. These additives are impor- tant for the engines in passenger cars, but they can have detrimental effects in marine engines, because of increased deposits in the combustion chamber.
When enough de- posits collect, piston rings begin sticking. Performance drops and engine wear in- creases dramatically. While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive , available from your Yamaha dealer. Ring Free Fuel Addi- tive has repeatedly proven its ability to clean combustion deposits from inside the engine, notably the critical piston-ring-land area, and fuel system components. Follow product la- beling for use instructions. ZMU03907 ECM00130 CAUTION: Be sure to take the above steps when op- erating the engine after a long period of storage. Otherwise engine seizure could occur.
EMU27233 Filling fuel and engine oil EMU30320 Filling fuel for models without a fuel joint EMU27292 Filling oil for oil injection models EWM00530 EWM00060 WARNING Do not add gasoline into the oil tank. Fire or explosion could result. WARNING Gasoline and its vapors are highly flam- mable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition. This engine uses the Yamaha oil injection system, which provides superior lubrication by ensuring the proper oil ratio for all operat- ing conditions. No fuel premixing is needed. Simply pour gasoline into the fuel tank and oil into the oil tank. Convenient indicators show the status of the oil supply.
For details on how to read the indicators, see page 29. To fill the engine oil tank, proceed as follows: 1. Remove the fuel tank cap. 2. Carefully fill the fuel tank. 3. Securely close the cap after filling the tank. Wipe up any spilled fuel. EMU27270 Ring Free Fuel Additive Gasoline is a precise blend of many different substances, each chosen to give certain characteristics. Gasoline blends have been 27