octane YAMAHA TW125 2003 Owners Manual

3-7
INSTRUMENT AND CONTROL FUNCTIONS
3
ECA00104
cC
Use only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to internal engine
parts, such as the valves and pis-
ton rings, as well as to the exhaust
system.
Your Yamaha engine has been
designed to use regular unleaded
gasoline with a research octane num-
ber of 91 or higher. If knocking (or
pinging) occurs, use a gasoline of a
different brand or premium unleaded
fuel. Use of unleaded fuel will extend
spark plug life and reduce mainte-
nance costs.EAU03050
Fuel cock
The fuel cock supplies fuel from the
tank to the carburetor while filtering it
also.
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.
RES
ONFUEL
OFF
1
1. Arrow mark positioned over “OFF”
ON
With the lever in this position, fuel
flows to the carburetor. Normal riding
is done with the lever in this position.
ONFUEL
RES
OFF
1ON
1. Arrow mark positioned over “ON”
OFF: Closed positionON: Normal position
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