octane YAMAHA XVS1100A 2003 Owners Manual

INSTRUMENT AND CONTROL FUNCTIONS
3-11
3Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number 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 maintenance costs.
EAU02969
Fuel cock The fuel cock supplies fuel from the
tank to the carburetors while also filter-
ing it.
The fuel cock lever positions are ex-
plained as follows and shown in the il-
lustrations.
OFF
With the fuel cock lever in this position,
fuel will not flow. Always turn the fuel
cock lever to this position when the en-
gine is not running.ON
With the fuel cock lever in this position,
fuel flows to the carburetors. Turn the
fuel cock lever to this position when
starting the engine and riding.1. Pointed end positioned over “OFF”OFF: closed position
1. Pointed end positioned over “ON”ON: normal position
U5KSE4.book Page 11 Wednesday, September 11, 2002 11:55 AM