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INSTRUMENT AND CONTROL FUNCTIONS
3-4
3
knocking (or pinging) occurs, use a
gasoline of a different brand or premi-
um unleaded fuel. Use of unleaded fuel
will extend spark plug life and reduce
maintenance costs.
Gasohol
There are two types of gasohol: gaso-
hol containing ethanol and that contain-
ing methanol. Gasohol containing
ethanol can be used if the ethanol con-
tent does not exceed 10%. Gasohol
containing methanol is not recom-
mended by Yamaha because it can
cause damage to the fuel system or ve-
hicle performance problems.
EAU13412
Fuel tank breather hose
Before operating the motorcycle:
● Check the fuel tank breather hose
connection.
● Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.
● Make sure that the fuel tank
breather hose is not blocked, and
clean it if necessary.
EAU13561
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it al-
so.
The fuel cock has three positions:
OFF
With the lever in this position, fuel will
not flow. Always return the lever to this
position when the engine is not running.
1. Fuel tank breather hose
1
1. Arrow mark positioned over “OFF”
U5B610E0.book Page 4 Thursday, July 12, 2007 1:41 PM