2008 YAMAHA XT660X lock

INSTRUMENT AND CONTROL FUNCTIONS
3-10
3
EAU12941
Brake pedal The brake pedal is on the right side of
the motorcycle. To apply the rear
brake, press down on the brake pedal.
EAUM1791
Fuel tank cap To remove the fuel tank cap
1. Open the fuel tank cap lock cover.
2. Insert the key into the lock and turn
it 1/4 turn clockwise. The lock will
be released and the fuel tank cap
can be removed.
To install the fuel tank cap
1. Push and install the fuel tank cap
into position with the key inserted
in the lock.
2. Turn the key counterclockwise to
the original position, and then re-
move it.
NOTE:The fuel tank cap cannot be installed
unless the key is in the lock. In addition,
the key cannot be removed if the cap isnot properly installed and locked.
WARNING
EWA11140
Make sure that the fuel tank cap isproperly installed before riding.
1. Brake pedal
1. Fuel tank cap lock cover
2. Unlock.
U5VKE1E0.book Page 10 Tuesday, July 18, 2006 1:00 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-12
3
EAU13431
Catalytic converter This model is equipped with a catalytic
converter in the exhaust system.
WARNING
EWA10860
The exhaust system is hot after op-
eration. Make sure that the exhaust
system has cooled down before do-ing any maintenance work.CAUTION:
ECA10700
The following precautions must be
observed to prevent a fire hazard or
other damages.

Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.


Never park the vehicle near pos-
sible fire hazards such as grass
or other materials that easily
burn.


Do not allow the engine to idletoo long.
EAU13900
Seat To remove the seat
1. Insert the key into the seat lock,
and then turn it as shown.
2. Pull the seat off.
To install the seat
1. Insert the projection on the front of
the seat into the seat holder as
shown.2. Push the rear of the seat down to
lock it in place.
3. Remove the key.
NOTE:Make sure that the seat is properly se-cured before riding.
1. Seat lock
2. Unlock.
1. Seat holder
2. Projection
U5VKE1E0.book Page 12 Tuesday, July 18, 2006 1:00 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-13
3
EAU14422
Storage compartment This storage compartment is designed
to hold a genuine Yamaha
CYCLELOK. (Other locks may not fit.)
When placing a CYCLELOK in the stor-
age compartment, securely fasten it
with the straps. When the CYCLELOK
is not in the storage compartment, be
sure to secure the straps to prevent los-
ing them.
WARNING
EWA10961


Do not exceed the load limit of 3
kg (7 lb) for the storage com-
partment.


Do not exceed the maximum
load of 186 kg (410 lb) for the ve-hicle.
EAU14830
Adjusting the shock absorber
assembly This shock absorber assembly is
equipped with a spring preload adjust-
ing ring.CAUTION:
ECA10100
Never attempt to turn an adjusting
mechanism beyond the maximum orminimum settings.
Adjust the spring preload as follows.
To increase the spring preload and
thereby harden the suspension, turn
the adjusting ring in direction (a). To de-
1. CYCLELOK bar (optional)
2. Yamaha CYCLELOK (optional)
3. Strap
1. Spring preload adjusting ring
2. Special wrench
3. Position indicator
U5VKE1E0.book Page 13 Tuesday, July 18, 2006 1:00 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
6XT660X
EAUM1682
Cowling A
To remove the cowlingRemove the bolts and spacers, and
then lift the cowling up to remove it.XT660R
XT660X
To install the cowling
1. Place the cowling bracket tab be-
tween the protector and the brack-
et on each side.2. Place the cowling in the original
position, and then install the bolts
and spacers.
EAUM1692
Cowling B (XT660R)
To remove the cowling1. Remove the seat and panel B.
(See pages 3-12 and 6-5.)
2. Remove the bolts, and then re-
move the quick fastener screws by
turning them 1/4 turn counterclock-
wise.
3. Pull the cowling off at the area
shown.
1. Cowling B
2. Panel B
2
1
1. Bolt
1. Bolt
1
1. Protector
2. Cowling bracket tab
3. Bracket
U5VKE1E0.book Page 6 Tuesday, July 18, 2006 1:00 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6 To install the cowling
1. Place the cowling in the original
position, and then install the quick
fastener screws and the bolts.
2. Install the panel.
3. Install the seat.
EAUM2130
Cowling B (XT660X)
To remove the cowling1. Remove the seat and panel B.
(See pages 3-12 and 6-5.)
2. Remove the bolts, and then re-
move the quick fastener screw by
turning it 1/4 turn counterclock-
wise.
3. Pull the cowling off at the area
shown.
To install the cowling1. Place the cowling in the original
position, and then install the quick
fastener screw and the bolts.2. Install the panel.
3. Install the seat.
EAUM1701
Panel A
To remove the panel1. Remove the seat. (See page
3-12.)
2. Remove the bolts and the spacer,
and then pull the panel off at the
area shown.
1. Bolt
2. Quick fastener screw
1. Bolt
2. Quick fastener screw1
2
U5VKE1E0.book Page 7 Tuesday, July 18, 2006 1:00 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-21
6
EAU21940
Spoke wheels To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified wheels.

The wheel rims should be checked
for cracks, bends or warpage, and
the spokes for looseness or dam-
age before each ride. If any dam-
age is found, have a Yamaha
dealer replace the wheel. Do not
attempt even the smallest repair to
the wheel. A deformed 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 han-
dling characteristics, and a short-
ened tire life.


Ride at moderate speeds after
changing a tire since the tire sur-
face must first be “broken in” for it
to develop its optimal characteris-
tics.
EAU22041
Adjusting the clutch lever free
play The clutch lever free play should mea-
sure 10.0–15.0 mm (0.39–0.59 in) as
shown. Periodically check the clutch le-
ver free play and, if necessary, adjust it
as follows.
1. Loosen the locknut at the clutch le-
ver.
2. To increase the clutch lever free
play, turn the adjusting bolt in di-
rection (a). To decrease the clutch
lever free play, turn the adjusting
bolt in direction (b).
NOTE:If the specified clutch lever free play
could be obtained as described above,
tighten the locknut and skip the rest of
the procedure, otherwise proceed asfollows.
3. Fully turn the adjusting bolt at the
clutch lever in direction (a) to loos-
en the clutch cable.
4. Loosen the locknut at the crank-
case.
1. Locknut
2. Clutch lever free play adjusting bolt
3. Clutch lever free play
1. Locknut
2. Clutch lever free play adjusting nut (crank-
case)
U5VKE1E0.book Page 21 Tuesday, July 18, 2006 1:00 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-22
65. To increase the clutch lever free
play, turn the adjusting nut in direc-
tion (a). To decrease the clutch le-
ver free play, turn the adjusting nut
in direction (b).
6. Tighten the locknut at the clutch le-
ver and the crankcase.
EAU22270
Adjusting the rear brake light
switch The rear brake light switch, which is ac-
tivated by the brake pedal, is properly
adjusted when the brake light comes
on just before braking takes effect. If
necessary, adjust the brake light switch
as follows.
Turn the adjusting nut while holding the
rear brake light switch in place. To
make the brake light come on earlier,
turn the adjusting nut in direction (a). To
make the brake light come on later, turn
the adjusting nut in direction (b).
EAU22390
Checking the front and rear
brake pads The front and rear brake pads must be
checked for wear at the intervals spec-
ified in the periodic maintenance and
lubrication chart.
EAU22430
Front brake pads
Each front brake pad is provided with
wear indicator grooves, which allow
you to check the brake pad wear with-
out having to disassemble the brake.
To check the brake pad wear, check
the wear indicator grooves. If a brake
pad has worn to the point that the wear
1. Rear brake light switch
2. Rear brake light switch adjusting nut
1. Brake pad wear indicator groove
U5VKE1E0.book Page 22 Tuesday, July 18, 2006 1:00 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
6


Be careful that water does not en-
ter the brake fluid reservoir when
refilling. Water will significantly
lower the boiling point of the fluid
and may result in vapor lock.


Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.


As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
EAU22760
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22782
To check the drive chain slack
1. Place the motorcycle on the side-
stand.NOTE:When checking and adjusting the drive
chain slack, there should be no weighton the motorcycle.
2. Shift the transmission into the neu-
tral position.3. Move the rear wheel by pushing
the motorcycle to locate the tight-
est portion of the drive chain, and
then measure the drive chain slack
as shown.
4. If the drive chain slack is incorrect,
adjust it as follows.
NOTE:When checking the drive chain slack,
the chain tensioner should not betouching the drive chain.
EAU22932
To adjust the drive chain slack
(XT660R)
1. Loosen the axle nut, then loosen
the locknut at each end of the
swingarm.
2. To tighten the drive chain, turn the
adjusting nut at each end of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing nut at each end of the
swingarm in direction (b), and then
push the rear wheel forward.
1. Drive chain slack
Drive chain slack:
40.0–55.0 mm (1.57–2.17 in)
U5VKE1E0.book Page 24 Tuesday, July 18, 2006 1:00 PM