TABLE OF CONTENTS
Lubricating the rear suspension......6-27
Lubricating the swingarm pivots .....6-28
Checking the front fork ....................6-28
Checking the steering .....................6-29
Checking the wheel bearings..........6-29
Battery.............................................6-30
Replacing the fuses ........................6-31
Replacing a headlight bulb .............6-33
Tail/brake light .................................6-34
Replacing a turn signal light bulb....6-34
Replacing the license plate light bulb ...................................6-35
Replacing an auxiliary light bulb .....6-35
Supporting the motorcycle ..............6-36
Front wheel .....................................6-36
Rear wheel ......................................6-38
Troubleshooting ...............................6-39
Troubleshooting charts ....................6-40
MOTORCYCLE CARE
AND STORAGE ...................................7-1
Care ..................................................7-1
Storage..............................................7-3 SPECIFICATIONS
...............................8-1
CONSUMER INFORMATION ..............9-1
Identification numbers .......................9-1
XT660Z 01-03 ING 10-03-2008 16:11 Pagina 7
PERIODIC MAINTENANCE AND MINOR REPAIR
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ECA10650CAUTION:
Take care not to damage the fol-
lowing parts:
●Headlight bulb • Do not touch the glass part
of the headlight bulb to keep
it free from oil, otherwise the
transparency of the glass,
the luminosity of the bulb,
and the bulb life will be ad-
versely affected. Thoroughly
clean off any dirt and finger-
prints on the headlight bulb
using a cloth moistened with
alcohol or thinner.
●Headlight lens
• Do not affix any type of tinted
film or stickers to the head-
light lens.
• Do not use a headlight bulb
of a wattage higher than
specified.
4. Connect the coupler, and then in- stall the headlight bulb cover.
5. Have a Yamaha dealer adjust the headlight beam if necessary.
EAU24180
Tail/brake light
This model is equipped with an LED
type of tail/brake light.
If the tail/brake light does not come on,
have a Yamaha dealer check it.
EAU24202
Replacing a turn signal
light bulb
1. Screw
2. Turn signal light lens
3. Turn signal light bulb
1. Remove the turn signal light lensby removing the screw.
2. Remove the defective bulb by pushing it in and turning it coun-
terclockwise.
3. Insert a new bulb into the socket, push it in, and then turn it clock-
wise until it stops.
4. Install the lens by installing the screw.
XT660Z 04-06 ING 11-03-2008 8:31 Pagina 6-34
SPECIFICATIONS
8-3
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Rear suspension:
Type: Swingarm (link suspension)
Spring/damper type: Coil spring/gas-oil damper, spring
preload adjustable
Wheel travel: 200 mm (7.87 in)
Electrical system:
Ignition system:Transistorized coil ignition (digital)
Charging system: A.C. magneto
Battery:
Model:GT9B-4
Voltage, capacity: 12 V, 8 Ah
Headlight:
Bulb type:Halogen bulb
Bulb voltage, wattage x quantity:Headlight:12 V, 55 W x 2
Auxiliary light: 12 V, 5 W x 2
Tail/brake light: LED
Front turn signal light: 12 V, 10 W x 2
Rear turn signal light: 12 V, 10 W x 2
Meter lighting: LED (backlight) Neutral indicator light:
LED
Turn signal indicator light: LED
High beam indicator light: LED
Coolant temperature warning light: LED
Engine trouble warning light: LED
Immobilizer system indicator light: LED
Fuses:Main fuse:
30 A
Headlight fuse: 20 A
Signaling system fuse: 10 A
Ignition fuse: 10 A
Parking lighting fuse: 10 A
Radiator fan fuse: 7.5 A
Fuel injection system fuse: 10 A
Backup fuse (for odometer, clock and immobilizer):
10 A
XT660Z 07-10 ING 11-03-2008 8:33 Pagina 8
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INDEX
AAir filter element, cleaning the check hose....................................6-14
Air filter element, replacing ..............6-14
Anti-theft alarm (optional)...................3-8
Auxiliary light bulb, replacing............6-35
B Battery ..............................................6-30 To access the battery ...................6-30
To charge the battery....................6-30
To store the battery.......................6-31
Brake and clutch levers, checking and lubricating ...............6-26
Brake fluid ........................................6-22 Changing ......................................6-23
Checking fluid level .......................6-22
Brake lever .......................................3-11
Brake pads, checking .......................6-21
Brake pedal ......................................3-11 Lubricating ....................................6-27
C Cables, checking and lubricating .....6-25
Care and storage ...............................7-1
Catalytic converter ...........................3-13
Checking and lubricating the brake and clutch levers .................6-26
Checking and lubricating the brake pedal ...................................6-27
Checking and lubricating the cables ...........................................6-25 Checking and lubricating the
sidestand ......................................6-27
Checking and lubricating the throttle grip and cable ...................6-26
Checking the sidestand switch .........3-18
Clock mode ........................................3-7
Clutch lever ......................................3-10
Clutch lever free play, adjusting .......6-20
Consumer information ........................9-1
Controls and instruments ...................2-3
Function ..........................................3-1
Coolant .............................................6-12
Coolant temperature warning light .....3-4
D Description .........................................2-1 Controls and instrument .................2-3
Left view..........................................2-1
Right view .......................................2-2
Dimmer switch....................................3-9
Drive chain, cleaning and lubricating .....................................6-25
Drive chain slack ..............................6-23 Adjusting .......................................6-23
Checking .......................................6-23
Cleaning and lubricating ...............6-25
E Engine break-in ..................................5-3
Engine idling speed, adjusting .........6-15
Engine oil and oil filter element ..........6-9
Engine oil filter element....................6-10 Engine stop switch .............................3-9
Engine trouble warning light...............3-4
F Front fork ..........................................3-15 Adjusting .......................................3-15
Checking .......................................6-28
Front wheel ......................................6-36 Installing........................................6-37
Removing......................................6-36
Fuel ..................................................3-12
Fuel consumption, tips for reducing ...5-3
Fuel meter ..........................................3-7
Fuel tank breather hose ...................3-13
Fuel tank cap ...................................3-11
Fuses, replacing ...............................6-31
H Handlebar switches ............................3-9 Dimmer switch ................................3-9
Engine stop switch ..........................3-9
Hazard switch ...............................3-10
Horn switch .....................................3-9
Pass switch .....................................3-9
Start switch .....................................3-9
Turn signal switch ...........................3-9
Headlight bulb, replacing..................6-33
High beam indicator light ...................3-4
Horn switch ........................................3-9
I Identification numbers ........................9-1
Idling speed, checking .....................6-15
XT660Z 07-10 ING 11-03-2008 8:33 Pagina 1
INDEX
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Ignition circuit cut-off system............3-17 Checking operation procedure......3-18
Immobilizer system ............................3-1
Immobilizer system indicator light ......3-4
Indicator and warning lights ...............3-3 Coolant temperature warning
light .................................................3-4
Engine trouble warning light ...........3-4
High beam indicator light ................3-4
Immobilizer system indicator light...3-4
Neutral indicator light ......................3-4
Turn signal indicator light ................3-3
Instruments ........................................2-3
Instrument and control functions........3-1
K Key identification number ...................9-1
Keys ...................................................3-1
L License plate light bulb, replacing ....6-35
Lubricating the brake and clutch levers ..................................6-26
Lubricating the brake pedal..............6-27
Lubricating the cables ......................6-25
Lubricating the drive chain ...............6-25
Lubricating the sidestand .................6-27
Lubricating the throttle grip and cable .............................................6-26
Lubricating the swingarm pivots.......6-28
M Main switch/steering lock ...................3-2 Model label .........................................9-2
Multi-function display..........................3-5
Clock mode .....................................3-7
Self-diagnosis devices ....................3-7
Tachometer .....................................3-6
Tripmeter and tachometer modes ...3-6
N Neutral indicator light .........................3-4
O Oil filter element ...............................6-10
Operation and important riding points ..............................................5-1
Owner’s tool kit...................................6-1
P Panels, removing and installing .........6-6
Parking ...............................................5-4
Pass switch ........................................3-9
Periodic maintenance and lubrication chart ..............................6-2
Periodic maintenance and minor repair...............................................6-1
Pre-operation check list......................4-2
Pre-operation checks .........................4-1
R Rear suspension, lubricating............6-27
Rear wheel .......................................6-38 Installing........................................6-39
Removing......................................6-38
Record the identification numbers .....9-1 S
Safety information ..............................1-1
Seat ..................................................3-14
Self-diagnosis devices .......................3-7
Shift pedal ........................................3-10
Shifting ...............................................5-2
Shock absorber assembly (adjusting) .....................................3-16
Sidestand .........................................3-17
Sidestand, checking and lubricating .....................................6-27
Sidestand switch, checking ..............3-18
Spark plug, checking..........................6-8
Specifications .....................................8-1
Spoke wheels ...................................6-19
Start switch ........................................3-9
Starting the engine.............................5-1
Steering, checking............................6-29
Steering lock ......................................3-2
Storage...............................................7-3
Supporting the motorcycle ...............6-36
Swingarm, lubricating the pivots ......6-28
T Tachometer ........................................3-6
Tail/brake light ..................................6-34
Throttle cable free play, checking.....6-16
Throttle grip and cable, checking and lubricating ..............................6-26
Tips for reducing fuel consumption ....5-3
Tires .................................................6-16 Air pressure ..................................6-16
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INDEX
Tire information .............................6-18
Tire inspection ..............................6-18
Tool kit ................................................6-1
Tripmeter and tachometer modes ......3-6
Troubleshooting ................................6-39 Troubleshooting charts .................6-40
Engine overheating .......................6-41
Turn signal indicator light ...................3-3
Turn signal light bulb, replacing........6-34
Turn signal switch...............................3-9
V Valve clearance ................................6-16
Vehicle identification number .............9-1
W Warning lights ....................................3-3
Wheel bearings, checking ................6-29
Wheels, spoke..................................6-19
XT660Z 07-10 ING 11-03-2008 8:33 Pagina 3