Gasoline - Yamaha F9.9C Ower's Manual

EMU18040

GASOLINE

Recommended gasoline:
Regular unleaded gasoline with a
minimum octane rating of 86 (Pump
Octane Number) = (R+M)/2
If knocking or pinging occurs, use a differ-
ent brand of gasoline or premium unleaded
fuel.
EMU00270
Gasohol
There are two types of gasohol: gasohol
containing ethanol and that containing
methanol. Gasohol containing ethanol can
be used if ethanol content does not exceed
10% and the fuel meets minimum octane
ratings. Gasohol containing methanol is not
recommended by Yamaha because it can
cause fuel system damage or engine per-
formance problems.
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