Operation34A good rule is to use 1/3 of your fuel to get tothe destination, 1/3 to return, and to keep 1/3 as an emergency reserve. With the boatlevel on a trailer or in the water, check thefuel level. For fuel filling instructions, seepage 37.EMU36570Remove cowlingFor the following checks, remove the topcowling from the engine. To remove the en-gine top cowling, release the lock lever andlift off the cowling.EMU36442Fuel systemWARNINGEWM00060Gasoline and its vapors are highly flam-mable and explosive. Keep away fromsparks, cigarettes, flames, or othersources of ignition.WARNINGEWM00910Leaking fuel can result in fire or explo-sion. Check for fuel leakage regularly. If any fuel leakage is found, the fuelsystem must be repaired by a qualifiedmechanic. Improper repairs can makethe outboard unsafe to operate.EMU36451Check for fuel leaks Check for fuel leaks or gasoline fumes inthe boat. Check for fuel leakage from the fuel sys-tem. Check the fuel tank and fuel lines forcracks, swellings, or other damages.EMU37320Check the fuel filterCheck that the fuel filter is clean and free ofwater. If any water is found in the fuel, or if asignificant amount of debris is found, the fueltank should be checked and cleaned by aYamaha dealer.EMU36901ControlsTiller handle models: Move the tiller handle fully to the left andright to make sure operation is smooth. Turn the throttle grip from the fully closedto the fully open position. Make sure that itturns smoothly and that it completely re-turns to the fully closed position. Look for loose or damaged connections ofthe throttle and shift cables.Remote control models: Turn the steering wheel full-right and full-left. Make sure operation is smooth andunrestricted throughout the whole rangewith no binding or excessive free play. Operate the throttle levers several times toZMU06169