2004 YAMAHA XT660R coolant temperature

INSTRUMENT AND CONTROL FUNCTIONS
3-3
3To unlock the steering
Push the key in, and then turn it to
“OFF” while still pushing it.
WARNING
EWA10060
Never turn the key to “OFF” or
“LOCK” while the vehicle is moving,
otherwise the electrical systems will
be switched off, which may result in
loss of control or an accident. Make
sure that the vehicle is stopped be-
fore turning the key to “OFF” or“LOCK”.
EAU33000
(Parking)
The steering is locked, and the taillight
and auxiliary light are on. The hazard
light and turn signal lights can be turned
on, but all other electrical systems are
off. The key can be removed.
The steering must be locked before the
key can be turned to “”.
CAUTION:
ECA11020
Do not use the parking position for
an extended length of time, other-wise the battery may discharge.
EAU11001
Indicator and warning lights
EAU11020
Turn signal indicator light “”
This indicator light flashes when the
turn signal switch is pushed to the left or
right.
EAU11060
Neutral indicator light “”
This indicator light comes on when the
transmission is in the neutral position.
1. Push.
2. Turn.
1. Engine trouble warning light “”
2. Turn signal indicator light “”
3. Fuel level warning light “”
4. High beam indicator light “”
5. Neutral indicator light “”
6. Coolant temperature warning light “”
7. Immobilizer system indicator light “”

INSTRUMENT AND CONTROL FUNCTIONS
3-4
3
EAU11080
High beam indicator light “”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU11360
Fuel level warning light “”
This warning light comes on when the
fuel level drops below approximately
5.0 L (1.32 US gal) (1.10 Imp.gal).
When this occurs, refuel as soon as
possible.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.NOTE:This model is also equipped with a self-
diagnosis device for the fuel level de-
tection circuit. If the fuel level detection
circuit is defective, the following cycle
will be repeated until the malfunction is
corrected: The fuel level warning lightwill flash eight times, then go off for 2.5
seconds. If this occurs, have a Yamaha
dealer check the vehicle.
EAU11440
Coolant temperature warning light
“”
This warning light comes on when the
engine overheats. When this occurs,
stop the engine immediately and allow
the engine to cool.
The electrical circuit of the warning light
can be checked by turning the key to
“ON”.
If the warning light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.CAUTION:
ECA10020
Do not operate the engine if it isoverheated.
EAU11530
Engine trouble warning light “”
This warning light comes on or flashes
when an electrical circuit monitoring the
engine is defective. When this occurs,
have a Yamaha dealer check the self-diagnosis system. (See page 3-5 for an
explanation of the self-diagnosis de-
vice.)
The electrical circuit of the warning light
can be checked by turning the key to
“ON”. If the warning light does not come
on for a few seconds, then go off, have
a Yamaha dealer check the electrical
circuit.
EAU26871
Immobilizer system indicator light
“”
The electrical circuit of the indicator
light can be checked by turning the key
to “ON”.
If the indicator light does not come on
for a few seconds, then go off, have a
Yamaha dealer check the electrical cir-
cuit.
When the key is turned to “OFF” and 30
seconds have passed, the indicator
light will start flashing indicating the im-
mobilizer system is enabled. After 24
hours have passed, the indicator light
will stop flashing, however the immobi-
lizer system is still enabled.

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.
EAUM1670
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 3-15.


Never ride with the sidestanddown.
1. Turn the key to “ON” and make
sure that the engine stop switch is
set to “”.
CAUTION:
ECAM1030
The following warning lights and in-
dicator light should come on for a
few seconds, then go off.

Fuel level warning light


Coolant temperature warning
light


Engine trouble warning light


Immobilizer system indicator
light
If a warning or indicator light does
not go off, see page 3-3 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-

PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
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.
EAUM1721
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 6-5.), and then
open the reservoir cap.
4. Add coolant to the maximum level
mark, and then close the reservoir
cap.
CAUTION:
ECA10470


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 engine may not be
sufficiently cooled and the cool-
ing 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 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.
1. Coolant reservoir
2. Maximum level mark
3. Minimum level markCoolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt) (0.22 Imp.qt)

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
NOTE:

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


If the engine overheats, see page6-38 for further instructions.
EAUM1801
To change the coolant
1. Place the vehicle on a level sur-
face and let the engine cool if nec-
essary.
2. Remove the seat and panel B.
(See pages 3-12 and 6-5.)
3. Remove cowling B. (See page
6-5.)
4. Place a container under the engine
to collect the used coolant.
5. Loosen the radiator cap retainer
screw.
6. Remove the radiator cap and cool-
ant reservoir cap.
WARNING
EWA10380
Never attempt to remove the radiatorcap when the engine is hot.7. Remove the coolant reservoir
bolts, and then turn the coolant
reservoir upside down to empty it.
8. Install the coolant reservoir by
placing it in the original position,
then installing the bolts.9. Remove the coolant drain bolt to
drain the cooling system.
10. After the coolant is completely
drained, thoroughly flush the cool-
ing system with clean tap water.
1. Radiator cap
2. Radiator cap retaining screw
3. Radiator cap retainer
4. Coolant reservoir cap
1. Bolt
1. Coolant drain bolt

SPECIFICATIONS
8-3
8
Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
XT660R 225.0 mm (8.86 in)
XT660X 200.0 mm (7.87 in)Rear suspension:Type:
Swingarm (monocross)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
XT660R 200.0 mm (7.87 in)
XT660X 191.0 mm (7.52 in)Electrical system:Ignition system:
Transistorized coil ignition (digital)
Charging system:
A.C. magnetoBattery:Model:
GT9B-4
Voltage, capacity:
12 V, 8.0 AhHeadlight:Bulb type:
Halogen bulbBulb voltage, wattage x quantity:Headlight:
12 V, 55 W/60.0 W × 1
Tail/brake light:
12 V, 5.0/21.0 W × 1Front turn signal light:
12 V, 10.0 W × 2
Rear turn signal light:
12 V, 10.0 W × 2
Auxiliary light:
12 V, 5.0 W × 1
Meter lighting:
EL
Neutral indicator light:
LED
High beam indicator light:
LED
Turn signal indicator light:
LED
Fuel level warning light:
LED
Coolant temperature indicator light:
LED
Engine trouble warning light:
LED
Immobilizer system indicator light:
LED
Fuses:Main fuse:
30.0 A
Headlight fuse:
20.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
10.0 A
Parking lighting fuse:
10.0 ARadiator fan fuse:
7.5 A
Electronic fuel injection fuse:
10.0 A
Backup fuse:
10.0 A

INDEX
AAir filter element and check hose,
replacing and cleaning ....................... 6-15
Anti-theft alarm (optional) ....................... 3-7
Auxiliary light bulb, replacing ................ 6-33BBattery .................................................. 6-28
Brake and clutch levers, checking
and lubricating .................................... 6-25
Brake fluid level, checking .................... 6-22
Brake lever ............................................. 3-9
Brake pedal .......................................... 3-10
Brake pedal, lubricating ........................ 6-26CCables, checking and lubricating .......... 6-25
Care ........................................................ 7-1
Catalytic converter ................................ 3-12
Clutch lever............................................. 3-9
Clutch lever free play, adjusting ........... 6-20
Coolant ................................................. 6-12
Coolant temperature warning light.......... 3-4
Cowlings and panels, removing and
installing ............................................... 6-5DDimmer switch ........................................ 3-8
Drive chain, lubricating ......................... 6-24
Drive chain slack .................................. 6-23EEngine break-in ...................................... 5-3
Engine idling speed .............................. 6-16
Engine oil and oil filter element............... 6-9
Engine stop switch.................................. 3-8
Engine trouble warning light ................... 3-4
FFront and rear brake pads, checking .... 6-21
Front fork, checking...............................6-27
Fuel ....................................................... 3-11
Fuel consumption, tips for reducing ........ 5-3
Fuel level warning light............................ 3-4
Fuel tank cap......................................... 3-10
Fuses, replacing .................................... 6-30HHandlebar switches ................................. 3-7
Hazard switch.......................................... 3-8
Headlight bulb, replacing....................... 6-31
High beam indicator light......................... 3-4
Horn switch ............................................. 3-8IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-15
Immobilizer system .................................3-1
Immobilizer system indicator light ........... 3-4
Indicator and warning lights .................... 3-3KKey identification number ........................ 9-1MMain switch/steering lock ........................ 3-2
Model label .............................................. 9-2
Multi-function display...............................3-5NNeutral indicator light .............................. 3-3PParking ....................................................5-4
Part locations .......................................... 2-1
Pass switch ............................................. 3-8
Periodic maintenance and lubrication
chart ......................................................6-2Pre-operation check list .......................... 4-2
RRear brake light switch, adjusting ......... 6-21SSafety information ................................... 1-1
Seat ...................................................... 3-12
Shifting .................................................... 5-2
Shift pedal ............................................... 3-9
Shock absorber assembly, adjusting .... 3-13
Sidestand .............................................. 3-14
Sidestand, checking and lubricating ..... 6-26
Spark plug, checking .............................. 6-7
Specifications.......................................... 8-1
Starting the engine.................................. 5-1
Start switch ............................................. 3-8
Steering, checking ................................ 6-27
Storage ................................................... 7-3
Storage compartment ........................... 3-13
Supporting the motorcycle .................... 6-33TThrottle cable free play, adjusting ......... 6-17
Throttle grip and cable, checking
and lubricating .................................... 6-25
Tires ...................................................... 6-17
Tool kit .................................................... 6-1
Troubleshooting .................................... 6-37
Troubleshooting charts ......................... 6-38
Turn signal indicator light ........................ 3-3
Turn signal light bulb or tail/brake
light bulb, replacing............................. 6-32
Turn signal switch ................................... 3-8VVehicle identification number .................. 9-1