2008 YAMAHA YZF-R1 engine coolant

INSTRUMENT AND CONTROL FUNCTIONS
3-10
3Coolant temperature display
The coolant temperature display indi-
cates the temperature of the coolant.
Push the “RESET” button to switch the
coolant temperature display to the air
intake temperature display.
NOTE:
When the coolant temperature display
is selected, “C” is displayed for one
second, and then the coolant tempera-ture is displayed.CAUTION:
ECA10020
Do not operate the engine if it isoverheated.Air intake temperature display
The air intake temperature display indi-
cates the temperature of the air drawn
into the air filter case. Push the “RE-
SET” button to switch the coolant tem-
perature display to the air intake
temperature display.
NOTE:

Even if the air intake temperature
is set to be displayed, the coolant
temperature warning light comes
on when the engine overheats.


When the key is turned to “ON”,
the coolant temperature is auto-
matically displayed, even if the air
intake temperature was displayed
prior to turning the key to “OFF”.


When the air intake temperature
display is selected, “A” is displayedbefore the temperature.
Self-diagnosis devices
This model is equipped with a self-diag-
nosis device for various electrical cir-
cuits.
If any of those circuits are defective, the
engine trouble warning light will come
on, and then the right display will indi-
cate a two-digit error code.
This model is also equipped with a self-
diagnosis device for the immobilizer
system.
1. Coolant temperature display
1. Air intake temperature display
1. Error code display
U4C8E1E0.book Page 10 Wednesday, June 13, 2007 9:24 AM

PRE-OPERATION CHECKS
4-2
4
EAU15605
Pre-operation check list
ITEM CHECKS PAGE
FuelCheck fuel level in fuel tank.
Refuel if necessary.
Check fuel line for leakage.3-17
Engine oilCheck oil level in engine.
If necessary, add recommended oil to specified level.
Check vehicle for oil leakage.6-10
CoolantCheck coolant level in reservoir.
If necessary, add recommended coolant to specified level.
Check cooling system for leakage.6-13
Front brakeCheck operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add recommended brake fluid to specified level.
Check hydraulic system for leakage.6-23, 6-23
Rear brakeCheck operation.
If soft or spongy, have Yamaha dealer bleed hydraulic system.
Check brake pads for wear.
Replace if necessary.
Check fluid level in reservoir.
If necessary, add recommended brake fluid to specified level.
Check hydraulic system for leakage.6-23, 6-23
ClutchCheck operation.
Lubricate cable if necessary.
Check lever free play.
Adjust if necessary.6-22
U4C8E1E0.book Page 2 Wednesday, June 13, 2007 9:24 AM

OPERATION AND IMPORTANT RIDING POINTS
5-1
5
EAU15950
WARNING
EWA10270


Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer re-
garding any control or function
that you do not thoroughly un-
derstand.


Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.


Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised com-
pletely, it could contact the
ground and distract the opera-
tor, resulting in a possible lossof control.
EAU33011
Starting the engine In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:

The transmission is in the neutral
position.


The transmission is in gear with
the clutch lever pulled and the sid-
estand up.WARNING
EWA10290


Before starting the engine,
check the function of the igni-
tion circuit cut-off system ac-
cording to the procedure
described on page 3-26.


Never ride with the sidestanddown.
1. Turn the key to “ON” and make
sure that the engine stop switch is
set to “”.
CAUTION:
ECA11730
The following warning lights and in-
dicator light should come on for a
few seconds, then go off.

Oil level warning light


Fuel level warning light


Coolant temperature warning
light


Shift timing indicator light


Engine trouble warning light


Immobilizer system indicator
light
If a warning or indicator light does
not go off, see page 3-4 for the corre-
sponding warning and indicator
light circuit check.
2. Shift the transmission into the neu-
tral position.NOTE:When the transmission is in the neutral
position, the neutral indicator light
should be on, otherwise have a
Yamaha dealer check the electrical cir-cuit.
3. Start the engine by pushing the
start switch.NOTE:If the engine fails to start, release the
start switch, wait a few seconds, and
then try again. Each starting attempt
should be as short as possible to pre-
U4C8E1E0.book Page 1 Wednesday, June 13, 2007 9:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-4
6
24*Rear suspension relay
arm and connecting
arm pivoting pointsCheck operation.√√√√
25*Fuel injection systemAdjust synchronization.√√√√ √
26 Engine oilChange.
Check oil level and vehicle for oil leakage.√√√√√ √
27Engine oil filter car-
tridgeReplace.√√√
28*Cooling systemCheck coolant level and vehicle for coolant leakage.√√√√ √
Change. Every 3 years
29*Front and rear brake
switchesCheck operation.√√√√√ √
30Moving parts and ca-
blesLubricate.√√√√ √
31*Throttle grip housing
and cableCheck operation and free play.
Adjust the throttle cable free play if necessary.
Lubricate the throttle grip housing and cable.√√√√ √
32*Air induction systemCheck the air cut-off valve, reed valve, and hose for dam-
age.
Replace any damaged parts if necessary.√√√√ √
33*Muffler and exhaust
pipeCheck the screw clamp for looseness.√√√√√
34*EXUP systemCheck operation, cable free play and pulley position.√√√
35*Lights, signals and
switchesCheck operation.
Adjust headlight beam.√√√√√ √ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1000 km)
ANNUAL
CHECK
1 10203040U4C8E1E0.book Page 4 Wednesday, June 13, 2007 9:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
EAU20070
Coolant The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
EAU42990
To check the coolant level
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.NOTE:

The coolant level must be checked
on a cold engine since the level
varies with engine temperature.


Make sure that the vehicle is posi-
tioned straight up when checking
the coolant level. A slight tilt to theside can result in a false reading.
2. Check the coolant level in the cool-
ant reservoir.
NOTE:The coolant should be between theminimum and maximum level marks.3. If the coolant is at or below the
minimum level mark, remove cowl-
ing B. (See page 6-6.)
4. Remove the reservoir cap, add
coolant to the maximum level
mark, and then install the reservoir
cap.
CAUTION:
ECA10471


If coolant is not available, use
distilled water or soft tap water
instead. Do not use hard water
or salt water since it is harmful
to the engine.


If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
be protected against frost and
corrosion.
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
1. Coolant reservoir cap
Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt) (0.22 Imp.qt)
U4C8E1E0.book Page 13 Wednesday, June 13, 2007 9:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6


If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possible,
otherwise the effectiveness ofthe coolant will be reduced.WARNING
EWA10380
Never attempt to remove the radiatorcap when the engine is hot.
5. Install the cowling.NOTE:

The radiator fans are automatically
switched on or off according to the
coolant temperature in the radia-
tor.


If the engine overheats, see page6-44 for further instructions.
EAU42980
To change the coolant
1. Place the vehicle on a level sur-
face and let the engine cool if nec-
essary.
2. Remove cowlings B and C. (See
page 6-6.)3. Place a container under the engine
to collect the used coolant.
4. Remove the radiator cap.
WARNING
EWA10380
Never attempt to remove the radiatorcap when the engine is hot.
5. Remove the coolant drain bolt to
drain the cooling system.6. Remove the coolant reservoir cap.
7. Remove the coolant reservoir by
removing the bolts, and then turn
the reservoir upside down to emp-
ty it.1. Radiator cap
1. Coolant drain bolt
1. Coolant reservoir cap
2. Coolant reservoir
3. Bolt
U4C8E1E0.book Page 14 Wednesday, June 13, 2007 9:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
6 8. After the coolant is completely
drained, thoroughly flush the cool-
ing system with clean tap water.
9. Install the coolant reservoir by in-
stalling the bolts.
10. Install the coolant drain bolt, and
then tighten it to the specified
torque.
NOTE:Check the washer for damage and re-place it if necessary.
11. Pour the recommended coolant
into the reservoir to the maximum
level mark, and then install the
coolant reservoir cap.
12. Pour the recommended coolant
into the radiator until it is full.
CAUTION:
ECA10471


If coolant is not available, use
distilled water or soft tap water
instead. Do not use hard water
or salt water since it is harmful
to the engine.


If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the cooling system will not
be protected against frost and
corrosion.


If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content ofthe coolant as soon as possible,
otherwise the effectiveness of
the coolant will be reduced.
13. Install the radiator cap, start the
engine, let it idle for several min-
utes, and then turn it off.
14. Remove the radiator cap to check
the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the top of the radia-
tor, and then install the radiator
cap.
15. Start the engine, and then check
the vehicle for coolant leakage. If
coolant is leaking, have a Yamaha
dealer check the cooling system.
16. Install the cowlings.
Tightening torque:
Coolant drain bolt:
7.0 Nm (0.7 m·kgf, 5.1 ft·lbf)
Antifreeze/water mixture ratio:
1:1
Recommended antifreeze:
High-quality ethylene glycol anti-
freeze containing corrosion inhibitors
for aluminum engines
Coolant quantity:
Radiator capacity (including all
routes):
2.76 L (2.92 US qt) (2.43 Imp.qt)
Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt) (0.22 Imp.qt)
U4C8E1E0.book Page 15 Wednesday, June 13, 2007 9:24 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-45
6 Engine overheating
WARNING
EWAT1040


Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be
blown out under pressure, which could cause serious injury. Be sure to wait until the engine has cooled.


Place a thick rag, like a towel, over the radiator cap, and then slowly rotate the cap counterclockwise to the de-
tent to allow any residual pressure to escape. When the hissing sound has stopped, press down on the capwhile turning it counterclockwise, and then remove the cap.
NOTE:If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolantas 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 NOTE.)
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.
U4C8E1E0.book Page 45 Wednesday, June 13, 2007 9:24 AM