SAFETY INFORMATION .....................1-1
DESCRIPTION.....................................2-1
Left view ...........................................2-1
Right view .........................................2-3
Controls and instruments .................2-5
INSTRUMENT AND CONTROL
FUNCTIONS ........................................3-1
Immobilizer system ...........................3-1
Main switch/steering lock .................3-2
Indicator and warning lights .............3-4
Multi-function display .......................3-6
Anti-theft alarm (optional) .................3-9
Handlebar switches ..........................3-9
Pass switch ....................................3-10
Dimmer switch ...............................3-10
Horn switch ...................................3-10
Turn signal switch ..........................3-10
Hazard switch ................................3-10
Engine stop switch ........................3-10
Start switch ....................................3-10
Clutch lever .....................................3-11
Shift pedal.......................................3-11
Brake lever ......................................3-11
Brake pedal.....................................3-12
ABS (for ABS models) ....................3-12
Fuel tank cap ..................................3-13
Fuel .................................................3-14
Fuel tank breather/overflow
hose .............................................3-15
Catalytic converters ........................3-16Seat.................................................3-16
Adjusting the front fork ...................3-17
Adjusting the shock absorber
assembly .....................................3-18
Sidestand ........................................3-19
Ignition circuit cut-off system .........3-20
FOR YOUR SAFETY – PRE-
OPERATION CHECKS ........................4-1
OPERATION AND IMPORTANT
RIDING POINTS ..................................5-1
Starting the engine ...........................5-1
Shifting ..............................................5-2
Tips for reducing fuel
consumption..................................5-3
Engine break-in.................................5-3
Parking ..............................................5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT ....................................6-1
Owner’s tool kit .................................6-1
Periodic maintenance chart for
the emission control system .........6-3
General maintenance and
lubrication chart ............................6-4
Removing and installing panels........6-8
Checking the spark plug ..................6-9
Engine oil and oil filter element ......6-11
Coolant ...........................................6-14Replacing the air filter element
and cleaning the check hose ......6-15
Checking the engine idling speed ..6-16
Checking the throttle cable free
play ..............................................6-17
Valve clearance ...............................6-17
Tires ................................................6-17
Spoke wheels .................................6-19
Adjusting the clutch lever free
play ..............................................6-20
Checking the front and rear brake
pads.............................................6-21
Checking the brake fluid level ........6-21
Drive chain slack.............................6-23
Cleaning and lubricating the
drive chain ...................................6-24
Checking and lubricating the
cables ..........................................6-25
Checking and lubricating the
brake and clutch levers ...............6-25
Checking and lubricating the
brake pedal .................................6-26
Checking and lubricating the
sidestand .....................................6-26
Lubricating the rear suspension .....6-27
Lubricating the swingarm pivots ....6-27
Checking the front fork ...................6-27
Checking the steering.....................6-28
Checking the wheel bearings .........6-29
Battery ............................................6-29
Replacing the fuses ........................6-31
Replacing a headlight bulb .............6-32
TABLE OF CONTENTS
56P-F8199-E0 30/6/10 09:24 Página 7
Do not run engine in poorly venti-
lated or partially enclosed areas
such as barns, garages, or car-
ports.
Do not run engine outdoors whe-
re engine exhaust can be drawn
into a building through openings
such as windows and doors.
Loading
Adding accessories or cargo to your
motorcycle can adversely affect sta-
bility and handling if the weight distri-
bution of the motorcycle is changed.
To avoid the possibility of an acci-
dent, use extreme caution when
adding cargo or accessories to your
motorcycle. Use extra care when
riding a motorcycle that has added
cargo or accessories. Here, along
with the information about accesso-
ries below, are some general guideli-
nes to follow if loading cargo to your
motorcycle:
The total weight of the operator, pas-
senger, accessories and cargo must
not exceed the maximum load limit.
Operation of an overloaded vehicle
could cause an accidentWhen loading within this weight limit,
keep the following in mind:
Cargo and accessory weight
should be kept as low and close
to the motorcycle as possible.
Securely pack your heaviest
items as close to the center of
the vehicle as possible and make
sure to distribute the weight as
evenly as possible on both sides
of the motorcycle to minimize
imbalance or instability.
Shifting weights can create a
sudden imbalance. Make sure
that accessories and cargo are
securely attached to the
motorcycle before riding. Check
accessory mounts and cargo res-
traints frequently.
• Properly adjust the suspension
for your load (suspension-
adjustable models only), and
check the condition and pres-
sure of your tires.• Never attach any large or
heavy items to the handlebar,
front fork, or front fender. The-
se items, including such cargo
as sleeping bags, duffel bags,
or tents, can create unstable
handling or a slow steering res-
ponse.
This vehicle is not designed to
pull a trailer or to be attached
to a sidecar.
Genuine Yamaha Accessories
Choosing accessories for your vehicle
is an important decision. Genuine
Yamaha accessories, which are avai-
lable only from a Yamaha dealer, have
been designed, tested, and approved
by Yamaha for use on your vehicle.
Many companies with no connection
to Yamaha manufacture parts and
accessories or offer other modifica-
tions for Yamaha vehicles. Yamaha is
not in a position to test the products
that these aftermarket companies
produce. Therefore, Yamaha can neit-
her endorse nor recommend the use
of accessories not sold by Yamaha or
modifications not specifically recom-
Maximum load:
XT660Z: 190 kg (419 lb)
XT660ZA: 188 kg (414 lb)
1
SAFETY INFORMATION
1-3
56P-F8199-E0 30/6/10 09:24 Página 11
mended by Yamaha, even if sold and
installed by a Yamaha dealer.
Aftermarket Parts, Accessories,
and Modifications
While you may find aftermarket pro-
ducts similar in design and quality to
genuine Yamaha accessories, recog-
nize that some aftermarket accesso-
ries or modifications are not suitable
because of potential safety hazards to
you or others. Installing aftermarket
products or having other modifica-
tions performed to your vehicle that
change any of the vehicle’s design or
operation characteristics can put you
and others at greater risk of serious
injury or death. You are responsible
for injuries related to changes in the
vehicle.
Keep the following guidelines in mind,
as well as those provided under “Loa-
ding” when mounting accessories.
Never install accessories or carry
cargo that would impair the per-
formance of your motorcycle.
Carefully inspect the accessory
before using it to make sure that
it does not in any way reduceground clearance or cornering
clearance, limit suspension tra-
vel, steering travel or control ope-
ration, or obscure lights or reflec-
tors.
• Accessories fitted to the hand-
lebar or the front fork area can
create instability due to impro-
per weight distribution or
aerodynamic changes. If
accessories are added to the
handlebar or front fork area,
they must be as lightweight as
possible and should be kept to
a minimum.
• Bulky or large accessories may
seriously affect the stability of
the motorcycle due to aerody-
namic effects. Wind may
attempt to lift the motorcycle,
or the motorcycle may become
unstable in cross winds. These
accessories may also cause
instability when passing or
being passed by large vehicles.
• Certain accessories can dis-
place the operator from his or
her normal riding position. This
improper position limits the fre-edom of movement of the ope-
rator and may limit control abi-
lity, therefore, such accesso-
ries are not recommended.
• Use caution when adding elec-
trical accessories. If electrical
accessories exceed the capa-
city of the motorcycle’s electri-
cal system, an electric failure
could result, which could cau-
se a dangerous loss of lights or
engine power.
Aftermarket Tires and Rims
The tires and rims that came with your
motorcycle were designed to match
the performance capabilities and to
provide the best combination of
handling, braking, and comfort. Other
tires, rims, sizes, and combinations
may not be appropriate. Refer to
page 6-17 for tire specifications and
more information on replacing your
tires.
Transporting the Motorcycle
Be sure to observe following instruc-
tions before transporting the
motorcycle in another vehicle.
1
SAFETY INFORMATION
1-4
56P-F8199-E0 30/6/10 09:24 Página 12
ITEM CHECKS PAGE
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check brake pads for wear.
Rear brake• Replace if necessary. 6-21
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.
• Check operation.
Clutch• Lubricate cable if necessary.
6-20
• Check lever free play.
• Adjust if necessary.
• Make sure that operation is smooth.
Throttle grip• Check cable free play.
6-17, 6-25
• If necessary, have Yamaha dealer adjust cable free play and lubricate cable
and grip housing.
Control cables• Make sure that operation is smooth.
• Lubricate if necessary.6-25
• Check chain slack.
Drive chain• Adjust if necessary.
6-23, 6-24
• Check chain condition.
• Lubricate if necessary.
• Check for damage.
Wheels and tires• Check tire condition and tread depth.
6-17, 6-19
• Check air pressure.
• Correct if necessary.
Brake pedal• Make sure that operation is smooth.
• Lubricate pedal pivoting point if necessary.6-26
Brake and clutch levers• Make sure that operation is smooth.
• Lubricate lever pivoting points if necessary.6-25
Sidestand• Make sure that operation is smooth.
• Lubricate pivot if necessary.6-26
Chassis fasteners• Make sure that all nuts, bolts and screws are properly tightened.
• Tighten if necessary.—
Instruments, lights, signals • Check operation.
and switches• Correct if necessary.—
FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-2
4
56P-F8199-E0 30/6/10 09:24 Página 41
PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
EAU1770C
General maintenance and lubrication chart
ODOMETER READING
NO. ITEM CHECK OR MAINTENANCE JOBANNUAL
1000 km 10000 km 20000 km 30000 km 40000 kmCHECK
(600 mi) (6000 mi) (12000 mi) (18000 mi) (24000 mi)
1Air filter element• Replace.√√
2Clutch• Check operation.
• Adjust.√√ √ √ √
3*Front brake• Check operation, fluid level and
vehicle for fluid leakage.√√ √ √ √ √
• Replace brake pads. Whenever worn to the limit
4*Rear brake• Check operation, fluid level and
vehicle for fluid leakage.√√ √ √ √ √
• Replace brake pads. Whenever worn to the limit
5*Brake hoses• Check for cracks or damage.√√√ √√• Replace. Every 4 years
• Check runout, spoke tightness
6*Wheelsand for damage.√√ √ √ √
• Tighten spokes if necessary.
• Check tread depth and for
damage.
7*Tires• Replace if necessary.√√√ √√
• Check air pressure.
• Correct if necessary.
8*Wheel bearings• Check bearing for looseness or
damage.√√√ √
56P-F8199-E0 30/6/10 09:24 Página 50
EAU21383
Checking the throttle cable
free play
1. Throttle grip free play
The throttle cable free play should
measure 3.0–5.0 mm (0.12–0.20 in) at
the inner edge of the throttle grip.
Periodically check the throttle cable
free play and, if necessary, have a
Yamaha dealer adjust it.
EAU21401
Valve clearance
The valve clearance changes with
use, resulting in improper air-fuel mix-
ture and/or engine noise. To prevent
this from occurring, the valve clearan-
ce must be adjusted by a Yamaha
dealer at the intervals specified in the
periodic maintenance and lubrication
chart.
EAU21642
Tires
To maximize the performance, durabi-
lity, and safe operation of your
motorcycle, note the following points
regarding the specified tires.
Tire air pressure
The tire air pressure should be chec-
ked and, if necessary, adjusted befo-
re each ride.
EWA10503
Operation of this vehicle with
improper tire pressure may
cause severe injury or death
from loss of control.
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperatu-
re of the tires equals the
ambient temperature).
The tire air pressure must be
adjusted in accordance with
the riding speed and with the
total weight of rider, passenger,
cargo, and accessories appro-
ved for this model.
WARNING
PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
6
56P-F8199-E0 30/6/10 09:24 Página 63
EWA10511
Never overload your vehicle. Ope-
ration of an overloaded vehicle
could cause an accident.
Tire inspection
1. Tire sidewall
2. Tire tread depth
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail or
glass fragments in it, or if the sidewall is
cracked, have a Yamaha dealer replace
the tire immediately.
TIPThe tire tread depth limits may differ
from country to country. Always comply
with the local regulations.
Tire information
This motorcycle is equipped with tube
tires.
EWA10461
The front and rear tires should be of
the same make and design, other-
wise the handling characteristics of
the vehicle may be different, which
could lead to an accident.
After extensive tests, only the tires lis-
ted below have been approved for
this model by Yamaha Motor Co., Ltd.
WARNING
Minimum tire tread depth (front
and rear):
1.6 mm (0.06 in)
WARNINGTire air pressure (measured on
cold tires):
0–90 kg (0–198 lb):
Front:
210 kPa (2.10 kgf/cm
2,
30 psi, 2.10 bar)
Rear:
230 kPa (2.30 kgf/cm
2,
33 psi, 2.30 bar)
XT660Z 90–190 kg (198–419 lb)
XT660ZA 90–188 kg (198–414 lb):
Front:
230 kPa (2.30 kgf/cm
2,
33 psi, 2.30 bar)
Rear:
250 kPa (2.50 kgf/cm
2,
36 psi, 2.50 bar)
Off-road riding:
Front:
200 kPa (2.00 kgf/cm
2,
29 psi, 2.00 bar)
Rear:
200 kPa (2.00 kgf/cm
2,
29 psi, 2.00 bar)
High-speed riding:
Front:
210 kPa (2.10 kgf/cm
2,
30 psi, 2.10 bar)
Rear:
230 kPa (2.30 kgf/cm
2,
33 psi, 2.30 bar)
Maximum load*:
XT660Z: 190 kg (419 lb)
XT660ZA: 188 kg (414 lb)
* Total weight of rider, passenger,
cargo and accessories
PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
6
56P-F8199-E0 30/6/10 09:24 Página 64
PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
6
EWA10570
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the
motorcycle with excessively
worn tires decreases riding
stability and can lead to loss of
control.
The replacement of all wheel-
and brake-related parts, inclu-ding the tires, should be left to
a Yamaha dealer, who has the
necessary professional know-
ledge and experience.
It is not recommended to patch
a punctured tube. If unavoida-
ble, however, patch the tube
very carefully and replace it as
soon as possible with a high-
quality product.
EAU21942
Spoke wheelsEWA10610
The wheels on this model are not
designed for use with tubeless
tires. Do not attempt to use tube-
less tires on this model.
To maximize the performance, durabi-
lity, and safe operation of your
motorcycle, note the following points
regarding the specified wheels.
The wheel rims should be chec-
ked for cracks, bends or warpa-
ge, and the spokes for looseness
or damage before each ride. If
any damage is found, have a
Yamaha dealer replace the whe-
el. Do not attempt even the sma-
llest repair to the wheel. A defor-
med or cracked wheel must be
replaced.
The wheel should be balanced
whenever either the tire or wheel
has been changed or replaced.
An unbalanced wheel can result
in poor performance, adverse
handling characteristics, and a
shortened tire life.
WARNING
WARNING
Front tire:
Size:
XT660Z 90/90-21M/C 54S
XT660Z 90/90-21M/C 54T
XT660ZA 90/90-21M/C 54S
Manufacturer/model:
XT660Z METZELER/ TOURANCE
XT660Z MICHELIN/SIRAC
XT660ZA PIRELLI/SCORPION
TRAIL
Rear tire:
Size:
XT660Z 130/80-17M/C 65S
XT660Z 130/80-17M/C 65T
XT660ZA 130/80-17M/C 65S
Manufacturer/model:
XT660Z METZELER/ TOURANCE
XT660Z MICHELIN/SIRAC
XT660ZA PIRELLI/SCORPION
TRAIL
56P-F8199-E0 30/6/10 09:24 Página 65