Page 89 of 98

MOTORCYCLE CARE AND STORAGE7-4
7 2. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
3. Perform the following steps to
protect the cylinder, piston rings,
etc. from corrosion.
a. Remove the spark plug cap
and spark plug.
b. Pour a teaspoonful of engine
oil into the spark plug bore.
c. Install the spark plug cap onto
the spark plug, and then place
the spark plug on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder wall with oil.)
e. Remove the spark plug cap
from the spark plug, and then
install the spark plug and the
spark plug cap. WARNING! To
prevent damage or injury
from sparking, make sure to
ground the spark plug elec-
trodes while turning the en-
gine over.
[EWA10952]
4. Lubricate all control cables and
the pivoting points of all levers and
pedals as well as of the side-
stand/centerstand.
5. Check and, if necessary, correct
the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
6. Cover the muffler outlets with
plastic bags to prevent moisture
from entering them.
7. Remove the battery and fully
charge it. Store it in a cool, dry
place and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place [less
than 0 °C (30 °F) or more than 30
°C (90 °F)]. For more information
on storing the battery, see page
6-29.TIPMake any necessary repairs before
storing the motorcycle.
U2BDE1E0.book Page 4 Tuesday, December 16, 2014 5:38 PM
Page 90 of 98

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2246 mm (88.4 in)
Overall width:
896 mm (35.3 in)
Overall height:
XT660Z 1477 mm (58.1 in)
XT660ZA 1450 mm (57.1 in)
Seat height:
XT660Z 896 mm (35.3 in)
XT660ZA 865 mm (34.1 in)
Wheelbase:
XT660Z 1500 mm (59.1 in)
XT660ZA 1505 mm (59.3 in)
Ground clearance:
XT660Z 260 mm (10.24 in)
XT660ZA 205 mm (8.07 in)
Minimum turning radius:
XT660Z 1958 mm (77.1 in)
XT660ZA 1980 mm (78.0 in)Weight:Curb weight:
XT660Z 206 kg (454 lb)
XT660ZA 215 kg (474 lb)Engine:Engine type:
Liquid cooled 4-stroke, SOHC
Cylinder arrangement:
Single cylinder
Displacement:
660 cm³
Bore × stroke:
100.0 × 84.0 mm (3.94 × 3.31 in)Compression ratio:
10.0 : 1
Starting system:
Electric starter
Lubrication system:
Dry sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 15W-40, 20W-40 or
20W-50
Recommended engine oil grade:
API service SE type or higher, JASO
standard MA
Engine oil quantity:
Without oil filter element replacement:
2.50 L (2.64 US qt, 2.20 Imp.qt)
With oil filter element replacement:
2.60 L (2.75 US qt, 2.29 Imp.qt)
Coolant quantity:Coolant reservoir (up to the maximum level
mark):
0.50 L (0.53 US qt, 0.44 Imp.qt)
Radiator (including all routes):
1.70 L (1.80 US qt, 1.50 Imp.qt)Air filter:Air filter element:
Dry elementFuel:Recommended fuel:
Premium unleaded gasoline only
Fuel tank capacity:
23.0 L (6.07 US gal, 5.06 Imp.gal)
Fuel reserve amount:
XT660Z 6.7 L (1.77 US gal, 1.47 Imp.gal)
XT660ZA 5.8 L (1.53 US gal, 1.28 Imp.gal)Fuel injection:Throttle body:
ID mark:
5YK2 11Spark plug(s):Manufacturer/model:
NGK/CR7E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction ratio:
75/36 (2.083)
Final drive:
Chain
–20 –10 0
1020 30 40 50 C 10 30 50 70 90 110 0 130 F
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U2BDE1E0.book Page 1 Tuesday, December 16, 2014 5:38 PM
Page 91 of 98

SPECIFICATIONS
8-2
8
Secondary reduction ratio:
45/15 (3.000)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
30/12 (2.500)
2nd:
26/16 (1.625)
3rd:
23/20 (1.150)
4th:
20/22 (0.909)
5th:
20/26 (0.769)Chassis:Frame type:
Diamond
Caster angle:
28.00 °
Trail:
XT660Z 113 mm (4.4 in)
XT660ZA 120 mm (4.7 in)Front tire:Type:
With tube
Size:
XT660Z 90/90-21 M/C 54S(METZELER)-
54T(MICHELIN)
XT660ZA 90/90-21 M/C 54S(PIRELLI)Manufacturer/model:
XT660Z METZELER/TOURANCE FRONT
XT660ZA PIRELLI/SCORPION TRAIL
Manufacturer/model:
XT660Z MICHELIN/SIRAC
Rear tire:Type:
With tube
Size:
XT660Z 130/80-17 M/C 65S(METZELER)-
65T(MICHELIN)
XT660ZA 130/80-17 M/C 65S(PIRELLI)
Manufacturer/model:
XT660Z METZELER/TOURANCE FRONT
XT660ZA PIRELLI/SCORPION TRAIL
Manufacturer/model:
XT660Z MICHELIN/SIRACLoading:Maximum load:
190 kg (419 lb)
(Total weight of rider, passenger, cargo
and accessories)Tire air pressure (measured on cold
tires):Loading condition:
0–90 kg (0–198 lb)
Front:
210 kPa (2.10 kgf/cm², 30 psi)
Rear:
230 kPa (2.30 kgf/cm², 33 psi)
Loading condition:
90–190 kg (198–419 lb)Front:
XT660Z 210 kPa (2.10 kgf/cm², 30 psi)
XT660ZA 230 kPa (2.30 kgf/cm², 33 psi)
Rear:
XT660Z 230 kPa (2.30 kgf/cm², 33 psi)
XT660ZA 250 kPa (2.50 kgf/cm², 36 psi)
Off-road riding:
Front:
XT660Z 200 kPa (2.00 kgf/cm², 29 psi)
Rear:
XT660Z 200 kPa (2.00 kgf/cm², 29 psi)
High-speed riding:
Front:
210 kPa (2.10 kgf/cm², 30 psi)
Rear:
230 kPa (2.30 kgf/cm², 33 psi)
Front wheel:Wheel type:
Spoke wheel
Rim size:
21 x 1.85Rear wheel:Wheel type:
Spoke wheel
Rim size:
17 x 2.75Front brake:Type:
Dual disc brake
Operation:
Right hand operation
Specified brake fluid:
DOT 4
U2BDE1E0.book Page 2 Tuesday, December 16, 2014 5:38 PM
Page 92 of 98

SPECIFICATIONS
8-3
8
Rear brake:Type:
Single disc brake
Operation:
Right foot operation
Specified brake fluid:
DOT 4Front suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
XT660Z 210 mm (8.3 in)
XT660ZA 160 mm (6.3 in)Rear suspension:Type:
Swingarm (link suspension)
Spring/shock absorber type:
Coil spring/gas-oil damper
Wheel travel:
XT660Z 200 mm (7.9 in)
XT660ZA 145 mm (5.7 in)Electrical system:Ignition system:
TCI
Charging system:
AC magnetoBattery:Model:
XT660Z GT9B-4
XT660ZA YTZ10SVoltage, capacity:
XT660Z 12 V, 8.0 Ah
XT660ZA 12 V, 8.6 Ah
Headlight:Bulb type:
Halogen bulbBulb voltage, wattage × quantity:Headlight:
12 V, 55.0 W × 2
Tail/brake light:
LED
Front turn signal light:
12 V, 10.0 W × 2
Rear turn signal light:
12 V, 10.0 W × 2
Auxiliary light:
12 V, 3.0 W × 2
License plate light:
12 V, 5.0 W × 1
Meter lighting:
LED
Neutral indicator light:
LED
High beam indicator light:
LED
Turn signal indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
ABS warning light:
XT660ZA LEDImmobilizer 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 A
Radiator fan motor fuse:
7.5 A
Fuel injection system fuse:
10.0 A
ABS control unit fuse:
XT660ZA 5.0 A
ABS motor fuse:
XT660ZA 30.0 A
ABS solenoid fuse:
XT660ZA 20.0 A
Backup fuse:
10.0 A
U2BDE1E0.book Page 3 Tuesday, December 16, 2014 5:38 PM
Page 93 of 98
CONSUMER INFORMATION
9-1
9
EAU40793
Identification numbersRecord the vehicle identification num-
ber and model label information in the
spaces provided below for assistance
when ordering spare parts from a
Yamaha dealer or for reference in case
the vehicle is stolen.
VEHICLE IDENTIFICATION NUMBER:
MODEL LABEL INFORMATION:
EAU26401
Vehicle identification number
The vehicle identification number is
stamped into the steering head pipe.
Record this number in the space pro-
vided.TIPThe vehicle identification number is
used to identify your motorcycle and
may be used to register your motorcy-
cle with the licensing authority in your
area.
EAU26542
Model label
XT660Z
XT660ZA
The model label is affixed to the frame
under the seat. (See page 3-16.) Re-
cord the information on this label in the
1. Vehicle identification number
1. Model label
1. Model labelZAUM1271ZAUM1255
U2BDE1E0.book Page 1 Tuesday, December 16, 2014 5:38 PM
Page 94 of 98
CONSUMER INFORMATION
9-2
9space provided. This information will
be needed when ordering spare parts
from a Yamaha dealer.
U2BDE1E0.book Page 2 Tuesday, December 16, 2014 5:38 PM
Page 95 of 98

10-1
10
INDEX
AABS (for ABS models) .......................... 3-12
ABS warning light (for ABS models) ....... 3-5
Air filter element and check hose,
replacing and cleaning ....................... 6-14
Auxiliary light bulb, replacing ............... 6-34BBattery .................................................. 6-29
Brake and clutch levers, checking and
lubricating........................................... 6-26
Brake fluid, changing............................ 6-23
Brake fluid level, checking.................... 6-21
Brake lever............................................ 3-11
Brake pedal .......................................... 3-11
Brake pedal, checking and
lubricating........................................... 6-26CCables, checking and lubricating ......... 6-25
Care ........................................................ 7-1
Catalytic converter ............................... 3-15
Clutch lever........................................... 3-10
Clutch lever free play, adjusting ........... 6-20
Coolant ................................................. 6-13
Coolant temperature warning light ......... 3-4DDimmer switch........................................ 3-9
Drive chain, cleaning and lubricating ... 6-24
Drive chain slack .................................. 6-23EEngine break-in ...................................... 5-3
Engine idling speed .............................. 6-16
Engine oil and oil filter element............. 6-10
Engine stop switch ............................... 3-10
Engine trouble warning light ................... 3-5
FFront and rear brake pads, checking ... 6-21
Front fork, adjusting ............................. 3-16
Front fork, checking ............................. 6-28
Fuel ...................................................... 3-13
Fuel consumption, tips for reducing ...... 5-3
Fuel tank breather/overflow hose ........ 3-15
Fuel tank cap........................................ 3-13
Fuses, replacing ................................... 6-31HHandlebar switches ............................... 3-9
Hazard switch ...................................... 3-10
Headlight bulb, replacing ..................... 6-32
High beam indicator light ....................... 3-4
Horn switch .......................................... 3-10IIdentification numbers ........................... 9-1
Ignition circuit cut-off system .............. 3-19
Immobilizer system ................................ 3-1
Immobilizer system indicator light ......... 3-5
Indicator lights and warning lights ......... 3-4LLicense plate light bulb, replacing ....... 6-35MMain switch/steering lock ...................... 3-2
Maintenance and lubrication, periodic... 6-4
Maintenance, emission control
system ................................................. 6-3
Matte color, caution ............................... 7-1
Model label............................................. 9-1
Multi-function display............................. 3-6NNeutral indicator light ............................. 3-4
PPanels, removing and installing .............. 6-8
Parking.................................................... 5-4
Part locations.......................................... 2-1
Pass switch............................................. 3-9RRear suspension, lubricating ................ 6-27SSafety information................................... 1-1
Seat....................................................... 3-16
Shifting.................................................... 5-2
Shift pedal............................................. 3-11
Shock absorber assembly, adjusting ... 3-18
Sidestand.............................................. 3-19
Sidestand, checking and lubricating .... 6-27
Spark plug, checking .............................. 6-9
Specifications ......................................... 8-1
Starting the engine ................................. 5-1
Start switch ........................................... 3-10
Steering, checking ................................ 6-28
Storage ................................................... 7-3
Supporting the motorcycle ................... 6-35
Swingarm pivots, lubricating ................ 6-27TTail/brake light ...................................... 6-34
Throttle grip and cable, checking and
lubricating ........................................... 6-25
Throttle grip free play, checking ........... 6-16
Tires ...................................................... 6-17
Tool kit .................................................... 6-2
Troubleshooting .................................... 6-39
Troubleshooting charts ......................... 6-40
Turn signal indicator light ....................... 3-4
Turn signal light bulb, replacing............ 6-34
U2BDE1E0.book Page 1 Tuesday, December 16, 2014 5:38 PM
Page 96 of 98
INDEX
10-2
10
Turn signal switch ................................... 3-9VValve clearance..................................... 6-17
Vehicle identification number ................. 9-1WWheel bearings, checking..................... 6-29
Wheel, front (for non-ABS models) ....... 6-36
Wheel, rear (for non-ABS models) ........ 6-37
Wheels .................................................. 6-19
U2BDE1E0.book Page 2 Tuesday, December 16, 2014 5:38 PM