2013 YAMAHA XT660Z fuel

vapor, or get some gasoline in your
eyes, see your doctor immediately.
If gasoline spills on your skin, wash
with soap and water. If gasoline
spills on your clothing, change your
clothes.
EAU49460
ECA11400
Use only unleaded gasoline. The
use of leaded gasoline will cause
severe damage to internal engine
parts, such as the valves and piston
rings, as well as to the exhaust sys-
tem.
Your Yamaha engine has been desig-
ned to use premium unleaded gasoli-ne with a research octane number of
95 or higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand. Use of unleaded fuel will
extend spark plug life and reduce
maintenance costs.
EAUB1300
Fuel tank breather/overflow
hose
1. Fuel tank breather/overflow hose
2. Hose clamp
Before operating the motorcycle:
Check the fuel tank breather/over-
flow hose connection.
Check the fuel tank
breather/overflow hose for
cracks or damage, and replace it
if damaged.
Make sure that the end of the fuel
tank breather/overflow hose is
not blocked, and clean it if
necessary.
Make sure that the end of the fuel
tank breather/overflow hose is
positioned inside of the clamp.
NOTICE
Recommended fuel:
PREMIUM UNLEADED
GASOLINE ONLY
Fuel tank capacity:
23.0 L (6.08 US gal, 5.06 Imp.gal)
Fuel reserve amount:
XT660Z 6.7 L (1.76 US gal,
1.46 Imp.gal)
XT660ZA 5.8 L (1.53 US gal,
1.28 Imp.gal)
INSTRUMENT AND CONTROL FUNCTIONS
3-15
3

FOR YOUR SAFETY – PRE-OPERATION CHECKS
4-1
4
EAU15596
Inspect your vehicle each time you use it to make sure the vehicle is in safe operating condition. Always follow the ins-
pection and maintenance procedures and schedules described in the Owner’s Manual.
EWA11151
Failure to inspect or maintain the vehicle properly increases the possibility of an accident or equipment dama-
ge. Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures pro-
vided in this manual, have the vehicle inspected by a Yamaha dealer.
Before using this vehicle, check the following points:
WARNING
ITEM CHECKS PAGE
• Check fuel level in fuel tank.
• Refuel if necessary.
Fuel• Check fuel line for leakage. 3-14
• Check the fuel tank breather/overflow hose for obstructions, cracks or
damage, and check the hose connection.
• Check oil level in oil tank.
Engine oil• If necessary, add recommended oil to specified level. 6-11
• Check vehicle for oil leakage.
• Check coolant level in reservoir.
Coolant• If necessary, add recommended coolant to specified level. 6-14
• Check cooling system for leakage.
• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check lever free play.
• Adjust if necessary.
Front brake• Check brake pads for wear. 6-21
• Replace if necessary.
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.

ECA10260
Even with the transmission in
the neutral position, do not
coast for long periods of time
with the engine off, and do not
tow the motorcycle for long
distances. The transmission is
properly lubricated only when
the engine is running. Inade-
quate lubrication may damage
the transmission.
Always use the clutch while
changing gears to avoid dama-
ging the engine, transmission,
and drive train, which are not
designed to withstand the
shock of forced shifting.
EAU16810
Tips for reducing fuel
consumption
Fuel consumption depends largely on
your riding style. Consider the follo-
wing tips to reduce fuel consumption:
Shift up swiftly, and avoid high
engine speeds during accelera-
tion.
Do not rev the engine while shif-
ting down, and avoid high engine
speeds with no load on the engi-
ne.
Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at
traffic lights or at railroad cros-
sings).
EAU16841
Engine break-in
There is never a more important
period in the life of your engine than
the period between 0 and 1600 km
(1000 mi). For this reason, you should
read the following material carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1600 km (1000 mi). The various parts
in the engine wear and polish them-
selves to the correct operating clea-
rances. During this period, prolonged
full-throttle operation or any condition
that might result in engine overhea-
ting must be avoided.
EAU17101
0–1000 km (0–600 mi)
Avoid prolonged operation above
4500 r/min. NOTICE: After 1000
km (600 mi) of operation, the
engine oil must be changed,
and the oil filter element repla-
ced.
[ECA11151]
1000–1600 km (600–1000 mi)
Avoid prolonged operation above
6000 r/min.
NOTICE
OPERATION AND IMPORTANT RIDING POINTS
5-3
5

1600 km (1000 mi) and beyond
The vehicle can now be operated
normally.
ECA10310
Keep the engine speed out of
the tachometer red zone.
If any engine trouble should
occur during the engine break-
in period, immediately have a
Yamaha dealer check the vehi-
cle.
EAU17213
Parking
When parking, stop the engine, and
then remove the key from the main
switch.
EWA10311
Since the engine and exhaust
system can become very hot,
park in a place where pedes-
trians or children are not likely
to touch them and be burned.
Do not park on a slope or on
soft ground, otherwise the
vehicle may overturn, increa-
sing the risk of a fuel leak and
fire.
Do not park near grass or other
flammable materials which
might catch fire.
WARNING
NOTICE
OPERATION AND IMPORTANT RIDING POINTS
5-4
5

PERIODIC MAINTENANCE AND ADJUSTMENT
6-3
6
EAU46861
TIP
The annual checks must be performed every year, except if a kilometer-based maintenance, or for the UK,
a mileage-based maintenance, is performed instead.
From 50000 km (30000 mi), repeat the maintenance intervals starting from 10000 km (6000 mi).
Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and
technical skills.
EAU46910
Periodic maintenance chart for the emission control system
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)
1*Fuel line• Check fuel hoses for cracks or
damage.333 33
2Spark plug• Check condition.
• Clean and regap.33
• Replace.33
3*Valves• Check valve clearance.
• Adjust.33
4*Fuel injection• Adjust engine idling speed.33 3 3 3 3
5*Mufflers and exhaust• Check the screw clamps for
pipeslooseness.33 3 3 3
• Check the air cut-off valve, reed
6*Air induction systemvalve, and hose for damage.
333 33
• Replace any damaged parts if
necessary.

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

EAU23291
Checking the wheel bearings
The front and rear wheel bearings
must be checked at the intervals spe-
cified in the periodic maintenance and
lubrication chart. If there is play in the
wheel hub or if the wheel does not
turn smoothly, have a Yamaha dealer
check the wheel bearings.
EAUS1910
Battery
To access the battery (XT660Z):
The battery is located under the seat.
(See page 3-16).
Remove the battery holder bracket by
removing the bolts.
1. Positive battery terminal
2. Holder
3. Bolt
4. Negative battery terminal
Battery (XT660ZA):
The battery is located under the fuel
tank.
1. Battery
Have a Yamaha dealer access the
battery.
These models are equipped with a
VRLA (Valve Regulated Lead Acid)
battery. There is no need to check the
electrolyte or to add distilled water.
However, the battery lead connec-
tions need to be checked and, if
necessary, tightened.
ECA10620
Never attempt to remove the bat-
tery cell seals, as this would per-
manently damage the battery.
NOTICE
PERIODIC MAINTENANCE AND ADJUSTMENT
6-29
6

3. Turn the key to “ON” and turn on
the electrical circuit in question to
check if the device operates.
4. If the fuse immediately blows
again, have a Yamaha dealer
check the electrical system.
EAUB1581
Replacing a headlight bulb
This model is equipped with quartz
bulb headlights. If a headlight bulb
burns out, replace it as follows.
ECA10650
Take care not to damage the follo-
wing 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 adversely affec-
ted. Thoroughly clean off any
dirt and fingerprints on the
headlight bulb using a cloth
moistened with alcohol or thin-
ner.
Headlight lens
Do not affix any type of tinted
film or stickers to the headlight
lens.
Do not use a headlight bulb of a
wattage higher than specified.
1. Headlight bulb cover
1. Remove the headlight bulb cover,
and then disconnect the head-
light coupler.
1. Headlight coupler
2. Headlight bulb holder
3. Headlight bulb
NOTICE
Specified fuses:
Main fuse:
30.0 A
Parking lighting fuse:
10.0 A
Signaling system fuse:
10.0 A
Headlight fuse:
20.0 A
Ignition fuse:
10.0 A
Fuel injection system fuse:
10.0 A
Radiator fan fuse:
7.5 A
Backup fuse:
10.0 A
ABS motor fuse (for ABS model):
30.0 A
ABS solenoid fuse (for ABS
model):
20.0 A
ABS control unit fuse (for ABS
model):
5.0 A
PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
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