Yamaha 2009 YZF-R1Y Owner's Manual page 23

Coolant
temperature
Under 39 °C
(Under 103 °F)
40–116 °C
(104–242 °F)
Above 117 °C
(Above 243 °F)
INSTRUMENT AND CONTROL FUNCTIONS
Display
Message "Lo" is displayed.
Temperature is displayed.
Temperature display flashes.
Warning light comes on.
4-7
Conditions
OK. Go ahead with riding.
OK. Go ahead with riding.
Stop the vehicle and allow it to idle until
the coolant temperature goes down.
If the temperature does not go down,
stop the engine. (See page 7-41.)
What to do
4