
INSTRUMENT AND CONTROL FUNCTIONS
4-12
1
2
3
4
\f
6
7
8
\b
10
To close the fuel tank cap 1. Push the fuel tank cap \fnto pos\f- t\fon w\fth the key \fnse\bted \fn the
lock.
2. Tu\bn the key counte\bclockw\fse to the o\b\fg\fnal pos\ft\fon, \bemove \ft,
and then close the\p lock cove\b.
TIP
The fuel tank cap cannot be closed
unless the key \fs \fn the lock. In add\f-
t\fon, the key cannot be \bemoved \ff the
cap \fs not p\bope\bly closed and locked.
EWA11091
WARNING0
Make sure that the fuel tank cap is
properly closed after filling fuel.
Leaking fuel is a \4fire hazard.
EAU13221
Fuel
Make su\be the\be \fs suff\fc\fent gasol\fne
\fn the tank.
EWA10881
WARNING0
Gasoline and gasoline vapors are
extremely flammable. To avoid fires
and explosions and to reduce the
risk of injury when refueling, follow
these instructions.\4
1. Befo\be \befuel\fng, tu\bn off the en- g\fne and be su\be that no one \fs
s\ftt\fng on the veh\fcle. Neve\b \befuel
wh\fle smok\fng, o\b wh\fle \fn the
v\fc\fn\fty of spa\bks, open flames, o\b
othe\b sou\bces of \fgn\ft\fon such as
the p\flot l\fghts of wate\b heate\bs
and clothes d\bye\bs.
2. Do not ove\bf\fll the fuel tank. When \befuel\fng, be su\be to \fnse\bt the
pump nozzle \fnto the fuel tank
f\flle\b hole. Stop f\fll\fng when the fu-
el \beaches the bottom of the f\flle\b
tube. Because fuel expands when
\ft heats up, heat f\bom the eng\fne
o\b the sun can cause fuel to sp\fll
out of the fuel ta\pnk.
1. Fuel tank f\flle\b tube
2. Fuel level
3. W\fpe up any sp\flled fuel \fmmed\f-ately. NOTICE: Immediately wipe
off spilled fuel with a clean, dry,
soft cloth, since fuel may deteri-
orate painted surfaces or plas-
tic parts.
4. Be su\be to secu\bely close the fuel tank cap.
EWA15151
WARNING0
Gasoline is poisonous and can
cause injury or death. Handle gaso-
line with care. Never siphon gaso-
line by mouth. If you should swal-
low some gasoline or inhale a lot of
gasoline vapor, or get some gaso-
line in your eyes, see your doctor
immediately. If gasoline spills on
XT660Z 04-04 ING-AUS:MY03 01-03 ING 11-05-2009 9:54 Pagina 4-12

your skin, wash with soap and
water. I\f gasoline spills on your
clothing, change your clothes.
EAU13390
ECA11400
\bse only unleaded gasoline. The use
o\f leaded gasoline will cause severe
damage to internal engine parts,
such as the valves and piston rings,
as well as to the exhaust system.
Your Yamaha en\fine has been \besi\f-
ne\b to use premium unlea\be\b \fasoli-
ne with a research octane number of
95 or hi\fher. If knockin\f (or pin\fin\f)
occurs, use a \fasoline of a \bifferent
bran\b. Use of unlea\be\b fuel will
exten\b spark plu\f life an\b re\buce
maintenance costs.
EAUB1300
Fuel tank breather/over\flow
hose
1. Fuel tank breather/hose
2. Hose clamp
Before operatin\f the motorcycle:
Check the fuel tank breather/over-
flow hose connection.
Check the fuel tank
breather/overflow hose for
cracks or \bama\fe, an\b replace it
if \bama\fe\b.
Make sure that the en\b of the fuel
tank breather/overflow hose is
not blocke\b, an\b clean it if
necessary.
Make sure that the en\b of the fuel
tank breather/overflow hose is
positione\b insi\be of the clamp.
EAU13433
Catalytic converters
This vehicle is equippe\b with catalytic
converters in the exhaust system.
EWA10862
The exhaust system is hot a\fter
operation. To prevent a \fire hazard
or burns:
Do not park the vehicle near
possible \fire hazards such as
grass or other materials that
easily burn.
Park the vehicle in a place
where pedestrians or children
are not likely to touch the hot
exhaust system.
Make sure that the exhaust
system has cooled down be\fo-
re doing any maintenance
work.
Do not allow the engine to idle
more than a \few minutes. Long
idling can cause a build-up o\f
heat.
WARNING
NOTICE
Recommended \fuel:PREMIUM UNLEADED
GASOLINE ONLY
Fuel tank capacity: 23.0 L (6.07 US \fal) (5.05 Imp.\fal)
Fuel reserve amount (when the
\fuel level warning light comes on): 6.7 L (1.77 US \fal) (1.47 Imp.\fal)
INSTR\bMENT AND CONTROL F\bNCTIONS
4-13
4
Australia 5/8/10 \g 16:16 Pági\fa 29

PERIODIC MAINTENANCE AND ADJUSTMENT
7-20
1
2
3
4
\f
6
7
8
\b
10
3. To increase the cl\ftch lever free pla\b, t\frn the adj\fsting bolt in di-
rection (a). To decrease the cl\ftch
lever free pla\b, t\frn the adj\fsting
bolt in direction (\lb).
TIP
If the specified cl\ftch lever free pla\b
co\fld be obtained as described above,
skip steps 4-7.
4. F\fll\b t\frn the adj\fsting bolt at the cl\ftch lever in direction (a) to
loosen the cl\ftch ca\lble.
5. Loosen the lockn\ft at the crankcase.1. Lockn\ft
2. Cl\ftch lever free pla\b adj\fsting n\ft(crankcase)
6. To increase the cl\ftch lever free
pla\b, t\frn the adj\fsting n\ft in di-
rection (a). To decrease the cl\ftch
lever free pla\b, t\frn the adj\fsting
n\ft in direction (b)\l.
7. Tighten the lockn\ft at the crankcase.
8. Tighten the lockn\ft at the cl\ftch lever and then slide the r\fbber
cover to its original position.
1
b
a
2
EAU22043
Adjusting the clutch lever
free play
1. Lockn\ft
2. Adj\fsting bolt
3. Cl\ftch lever free pla\b
The cl\ftch lever free pla\b sho\fld mea-
s\fre 10.0-15.0 mm (0.39-0.59 in) as
shown. Periodicall\b check the cl\ftch
lever free pla\b and, if necessar\b, ad-
j\fst it as follows.
1. Slide the r\fbber cover back at the cl\ftch lever.
2. Loosen the lockn\ft.
31
2
b
a
XT660Z 05-07 ING-AUS:MY03 04-06 ING 11-05-2009 10:09 Pagina 7-20

PERIODIC MAINTENANCE AND ADJUSTMENT
7-22
1
2
3
4
\f
6
7
8
\b
10
Insufficient brake fluid \fay allow air to
enter t\be brake syste\f, possibly caus-
ing it to beco\fe ine\dffective.
Before riding, c\beck t\bat t\be brake flu-
id is above t\be \fini\fu\f level \fark
and replenis\b if ne\dcessary.
A low brake fluid level \fay indicate
worn brake pads and/or brake syste\f
leakage. If t\be brake fluid level is low,
be sure to c\beck t\be brake pads for
wear and t\be brake syste\f for leak-
age.
Observe t\bese precautions\d:
●W\ben c\becking t\be fluid level,
\fake sure t\bat t\be top of t\be
brake fluid reservoir is level.
●Use only t\be reco\f\fended qual-
ity brake fluid, ot\berwise t\be rub-
ber seals \fay deteriorate, caus-
ing leakage and poor braking
perfor\fance.
●Refill wit\b t\be sa\fe type of brake
fluid. Mixing fluids \fay result in a
\bar\fful c\be\fical reaction and
lead to poor braking perfor\fance.
●Be careful t\bat water does not en-
ter t\be brake fluid reservoir w\ben
refilling. Water will significantly
lower t\be boiling point of t\be fluid
and \fay result in vapor lock.
●Brake fluid \fay deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid i\f\fe-
diately.
●As t\be brake pads wear, it is nor-
\fal for t\be brake fluid level to
gradually go down. However, if
t\be brake fluid level goes down
suddenly, \bave a Ya\fa\ba dealer
c\beck t\be cause.
Recommended brake f\4luid: DOT 4
EAU22580
Checking the brake fluid
level
Front brake
1. Mini\fu\f level \fark
Rear brake
1. Mini\fu\f level \fark
XT660Z 05-07 ING-AUS:MY03 04-06 ING 11-05-2009 10:10 Pagina 7-22

PERIODIC MAINTENANCE AND ADJUSTMENT
7-24
1
2
3
4
\f
6
7
8
\b
10
1. Wheel axle
2. Drive chain \flack adj\b\fting bolt
3. Lockn\bt
4. Alignment mark\f
TIP
U\fing the alignment mark\f on each
\fide of the \fwingarm, make \f\bre that
both chain p\bller\f are in the \fame po-
\fition for proper wheel al\nignment.
3. Tighten the axle n\bt, then the lock- n\bt\f to their \fpecified torq\be\f.
Tightening torques:
Axle n\bt:105 Nm (10.5 m·kgf, 75 ft·lbf)
Lockn\bt: 16 Nm (1.6 m·kgf, 11 ft·lbf)
EAU34314
To adjust the drive chain slack1. Loo\fen the axle n\bt and the lock- n\bt on each \fide of the \fwingarm.
2. To tighten the drive chain, t\brn the drive chain \flack adj\b\fting bolt on
each \fide of the \fwingarm in di-
rection (a). To loo\fen the drive
chain, t\brn the adj\b\fting bolt on
each \fide of the \fwingarm in di-
rection (b), and then p\b\fh the rear
wheel forward. NOTICE: Improp-
er drive chain slack will over-
load the engine as well as other
vital parts of the motorcycle
and can lead to chain slippage
or breakage. To prevent this
from occurring, keep the drive
chain slack within the specified
limits.
XT660Z 05-07 ING-AUS:MY03 04-06 ING 11-05-2009 10:10 Pagina 7-24

PERIODIC MAINTENANCE AND ADJUSTMENT
7-32
1
2
3
4
\f
6
7
8
\b
10
ECA10640
NOTICE
Do not use a fuse of a higher am-
perage rating than recommended
to avoid causing extensive damage
to the electrical system and possi-
bly a fire.
3. Turn th\f k\fy to \bON” and turn on th\f \fl\fctrical circuit in qu\fstion to
ch\fck if th\f d\fvic\f op\frat\fs.
4. If th\f fus\f imm\fdiat\fly blows again, hav\f a Yamaha d\fal\fr
ch\fck th\f \fl\fctrical syst\fm.
1. Parking lighting fus\f
2. Signaling syst\fm fus\f
3. H\fadlight fus\f
4. Ignition fus\f
5. El\fctronic fu\fl inj\fction fus\f
6. Radiator fan fus\f
7. Backup fus\f
8. R\fs\frv\f fus\fs
Th\f main fus\f and fus\f box ar\f locat-
\fd und\fr th\f s\fat. (S\f\f pag\f 7-31.)
If a fus\f is blown, r\fplac\f it as follows.1. Turn th\f k\fy to \bOFF” and turn off th\f \fl\fctrical circuit in qu\fstio\hn.
2. R\fmov\f th\f blown fus\f, and th\fn install a n\fw fus\f of th\f sp\fcifi\fd
amp\frag\f.
7
8
654321Specified fuses:
Main fus\f:30 A
Parking lighting fus\f: 10 A
Signalling syst\fm fus\h\f: 10 A
H\fadlight fus\f: 20 A
Ignition fus\f: 10 A
Fu\fl inj\fction syst\fm \hfus\f: 10 A
Radiator fan fus\f: 7.5 A
Backup fus\f (for odom\ft\fr,
clock and immobiliz\fr): 10 A
XT660Z 05-07 ING-AUS:MY03 04-06 ING 11-05-2009 10:10 Pagina 7-32

PERIODIC MAINTENANCE AND ADJUSTMENT
7-34
1
2
3
4
\f
6
7
8
\b
10
ECA10650
NOTICE
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 t\fe couple\b, and t\fen in-
stall t\fe \feadlig\ft bulb cove\b.
5. Have a Yama\fa deale\b adjust t\fe \feadlig\ft beam if nec\ essa\by.
EAU24204
Replacing a turn signal
light bulb
1. Sc\bew
2. Tu\bn signal lig\ft lens
3. Tu\bn signal lig\ft bulb
1. Remove t\fe tu\bn signal lig\ft lensby \bemoving t\fe sc\bew.
2. Remove t\fe bu\bnt-out bulb by pus\fing it in and tu\bning it coun-
te\bclockwise.
3. Inse\bt a new bulb into t\fe socket, pus\f it in, and t\fen tu\bn it clock-
wise until it stops.
XT660Z 05-07 ING-AUS:MY03 04-06 ING 11-05-2009 10:10 Pagina 7-34

PERIODIC MAINTENANCE AND ADJUSTMENT
7-38
1
2
3
4
\f
6
7
8
\b
10
TIP
●If the drive chain is difficu\ft to re-
move, remove the \bhee\f ax\fe first,
and then \fift the \bhee\f up\bard
enough to remove the drive chain
from the rear sprocket.
●The drive chain cannot be disas-
semb\fed.
7. Whi\fe suppor ting the brake ca\fiper bracket, pu\f\f the \bhee\f
ax\fe out, and then remove the
\bhee\f. NOTICE: Do not apply
the brake after the wheel has
been removed together with
the brake disc, otherwise the
brake pads will be\4 forced shut.
EAUB1450
To install the rear wheel 1. Insta\f\f the \bhee\f and the brake ca\fiper bracket by inserting the
\bhee\f ax\fe from the right-hand
side.
EAU25080
Rear wheelEAU25312
To remove the rear wheelEWA10821
WARNING0
To avoid injury, securely support
the vehicle so there is no danger of
it falling over.
1. Whee\f ax\fe nut
2. Drive chain s\fack adjusting bo\ft
3. Locknut
4. Drive chain
3
4
1
1. Whee\f ax\fe
2. Drive chain s\fack adjusting bo\ft
3. Locknut
4. Brake ca\fiper
1. Loosen the ax\fe nut.
2. Lift the rear \bhee\f off the groundaccording to the procedure on
page 7-36.
3. Remove the ax\fe nut.
4. Loosen the \focknut on each side of the s\bingarm.
5. Turn the drive chain s\fack adjust- ing bo\fts fu\f\fy in direction (a) and
push the \bhee\f for\bard.
6. Remove the drive chain from the rear sprocket.
4
3
1
2
a
XT660Z 05-07 ING-AUS:MY03 04-06 ING 11-05-2009 10:10 Pagina 7-38