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There are two types of gasohol: gasohol con- taining ethanol and that containing metha- nol. Gasohol containing ethanol can be used if ethanol content does not exceed 10% and the fuel meets minimum octane ratings. Yamaha does not recommended gasohol containing methanol because it can cause fuel system damage or engine performance problems.
Gasohol
Recommended gasoline:
Regular unleaded gasoline with a min- imum octane rating of 86 (Pump Oc- tane Number) = (R+M)/2
If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel.
Gasoline
EMU25570
Use only new clean gasoline which has been stored in clean containers and is not contaminated with water or foreign mat- ter.
CAUTION:
ECM00010
Propeller selection
EMU25741
Recommended engine oil: YAMALUBE 2-stroke outboard motor oil
If the recommended engine oil is not avail- able, another 2-stroke engine oil with an NMMA-certifiedTC-W3 rating may be used.
Engine oil
EMU25640
dry rags.
● Do not overfill the fuel tank.
● Tighten the filler cap securely after re- fueling.
● If you should swallow some gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention.
● If any gasoline spills onto your skin, im- mediately wash with soap and water. Change clothing if gasoline spills on it.
● Touch the fuel nozzle to the filler open- The performance of your outboard motor will ing or funnel to help prevent electro- be critically affected by your choice of propel-
static sparks.ler, as an incorrect choice could adversely affect performance and could also seriously damage the motor. Engine speed depends on the propeller size and boat load. If engine speed is too high or too low for good engine performance, this will have an adverse effect on the engine.
Yamaha outboard motors are fitted with pro- pellers chosen to perform well over a range of applications, but there may be uses where a propeller with a different pitch would be more appropriate. For a greater operating load, a smaller-pitch propeller is more suit- able as it enables the correct engine speed to be maintained. Conversely, a larger-pitch propeller is more suitable for a smaller oper- ating load.
Yamaha dealers stock a range of propellers, and can advise you and install a propeller on your outboard that is best suited to your ap- plication.
General information