5-5
Your Yamaha engine has been designed to
use premium unleaded gasoline with a pump
octane number ([R+M]/2) of 91 or higher, or
research octane number of 95 or higher. If
knocking or pinging occurs, use a different
brand of gasoline. Unleaded fuel will give you
longer spark plug life and reduced mainte-
nance cost.
Gasohol
There are two types of gasohol; gasohol con-
taining ethanol and that containing methanol.
Gasohol containing ethanol can be used if
ethanol content does not exceed 10%. Gaso-
hol containing methanol is not recommended
by Yamaha because it may cause fuel system
damage or vehicle performance problems.
1. Fuel tank filler tube 2. Fuel level
U5TG10.book Page 5 Monday, April 7, 2003 8:50 PM