2015 YAMAHA YZF-R6 engine overheat

INSTRUMENT AND CONTROL FUNCTIONS
3-5
3If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
TIPThis model is also equipped with a self-
diagnosis device for the fuel level de-
tection circuit. If a problem is detected
in the fuel level detection circuit, the
following cycle will be repeated until
the malfunction is corrected: The fuel
level warning light will flash eight times,
and then go off for 3.0 seconds. If this
occurs, have a Yamaha dealer check
the vehicle.
EAU1142D
Coolant temperature warnin
g
li g ht “ ”
This warning light comes on if the en-
gine overheats. If this occurs, reduce
the load on the engine immediately. If
message “HI” flashes in the coolant
temperature display, stop the vehicle,
then stop the engine and let the engine
cool. The electrical circuit of the warning
light can be checked by turning the key
to “ON”. The warning light should
come on for a few seconds, and then
go off.
If the warning light does not come on
initially when the key is turned to “ON”,
or if the warning light remains on, have
a Yamaha dealer check the electrical
circuit.
NOTICE
ECA10022
Do not continue to operate the en-
g
ine if it is overheatin g.TIP For radiator-fan-equipped vehi-
cles, the radiator fan(s) automati-
cally switch on or off according to
the coolant temperature in the ra-
diator.
 If the engine overheats, see page
6-46 for further instructions.
U2CXE1E0.book Page 5 Friday, July 25, 2014 11:05 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-10
3
LECT” button, and then push it again
for a few seconds until the stopwatch
digits stop flashing.
Standard measurement
1. Push the “RESET” button to start
the stopwatch.
2. Push the “SELECT” button to stop the stopwatch.
3. Push the “SELECT” button again to reset the stopwatch.
Split-time measurement1. Push the “RESET” button to start the stopwatch.
2. Push the “RESET” button or start switch “ ” to measure split-
times. (The colon “:” will start
flashing.)
3. Push the “RESET” button or start switch “ ” to display the final
split-time or push the “SELECT”
button to stop the stopwatch and
display total elapsed time.
4. Push the “SELECT” button to re- set the stopwatch.
TIPTo change the display back to the prior
mode, push the “SELECT” button for a
few seconds until the stopwatch digits
flash.Coolant temperature display
The coolant temperature display indi-
cates the temperature of the coolant.TIPWhen the coolant temperature display
is selected, “C” is displayed for one
second, and then the coolant tempera-
ture is displayed.
NOTICE
ECA10022
Do not continue to operate the en-
g ine if it is overheatin g.Air intake temperature display
The air intake temperature display indi-
cates the temperature of the air drawn
into the air intake duct. Push the “RE-
SET” button to switch the coolant tem-
perature display to the air intake
temperature display.TIP Even if the air intake temperature
is set to be displayed, the coolant
temperature warning light comes
on if the engine overheats.
1. Coolant temperature display
TRIP A
˚C
1
1. Air intake temperature display
TRIP A
˚C
1
U2CXE1E0.book Page 10 Friday, July 25, 2014 11:05 AM

OPERATION AND IMPORTANT RIDING POINTS
5-3
5
EAU16811
Tips for reducin g fuel con-
sumptionFuel consumption depends largely on
your riding style. Consider the follow-
ing tips to reduce fuel consumption:
 Shift up swiftly, and avoid high en-
gine speeds during acceleration.
 Do not rev the engine while shift-
ing down, and avoid high engine
speeds with no load on the en-
gine.
 Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at traf-
fic lights or at railroad crossings).
EAU16842
Engine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1600 km (1000 mi). For
this reason, you should read the fol-
lowing material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts in
the engine wear and polish themselves
to the correct operating clearances.
During this period, prolonged full-throt-
tle operation or any condition that
might result in engine overheating
must be avoided.
EAU17084
0–1000 km (0–600 mi)
Avoid prolonged operation above 8300
r/min. NOTICE: After 1000 km (600
mi) of operation, the en gine oil must
b e chan ged an d the oil filter car-
tri dg e or element replace d.
[ECA10303]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above 9900
r/min. 1600 km (1000 mi) an
d b eyon d
The vehicle can now be operated nor-
mally.
NOTICE
ECA10311
 Keep the en gine spee d out of
the tachometer red zone.
 If any en gine trou ble shoul d oc-
cur during the en gine break-in
period , imme diately have a
Yamaha dealer check the vehi-
cle.TIPDuring and after the engine break-in
period, the exhaust heat may cause
discoloration of the exhaust pipe, but
this is normal.
U2CXE1E0.book Page 3 Friday, July 25, 2014 11:05 AM

PERIODIC MAINTENANCE AND ADJUSTMENT
6-46
6
En
gine overheatin g
WARNING
EWAT1041
Do not remove the ra diator cap when the en gine an d ra diator are hot. Scal din g hot flui d an d steam may be
b lown out un der pressure, which coul d cause serious injury. Be sure to wait until the en gine has coole d.
 Place a thick ra g, like a towel, over the ra diator cap, an d then slowly rotate the cap counterclockwise to the
d etent to allow any resi dual pressure to escape. When the hissin g soun d has stoppe d, press down on the cap
while turnin g it counterclockwise, an d then remove the cap.TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool-
ant as soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
U2CXE1E0.book Page 46 Friday, July 25, 2014 11:05 AM