Yamaha F100A - Manual (Page 19)

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EMU00025
GASOLINE (PETROL)
If knocking or pinging occurs, use a differ-
ent brand of gasoline or premium unlead-
ed fuel. If unleaded gasoline is not avail-
able, then leaded regular gasoline can be
used.
If leaded gasoline is usually used, engine
valves and related parts should be
inspected after every 300 hours of opera-
tion.
EMU00027
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 Yama-
ha because it can cause fuel system dam-
age or engine performance problems.
Recommended gasoline:
Regular unleaded gasoline with a
minimum octane rating of 86 (Pump
Octane Number) = (R+M)/2
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