2008 YAMAHA XT660Z Owners Manual

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INSTRUMENT AND CONTROL FUNCTIONS
3-9
EAU12347
Handlebar switches
Left
1. Pass switch “1”
2. Dimmer switch “2/ 1 ”
3. Horn switch “o”
4. Turn signal switch “ y”
5. Hazard switch “
r”

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2
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3

Right
1. Engine stop switch “I/”
2. Start switch “J”
EAU12350
Pass switch “1”
Press this switch to flash the head-
light.
EAU12400
Dimmer switch “ 2/1”
Set this switch to “
1” for the high
beam and to “ 2” for the low beam.
EAU12500
Horn switch “ o”
Press this switch to sound the horn.
B

EAU12460
Turn signal switch “ y”
To signal a right-hand turn, push this
switch to “ Δ”. To signal a left-hand
turn, push this switch to “ Ÿ”. When re-
leased, the switch returns to the cen-
ter position. To cancel the turn signal
lights, push the switch in after it has re-
turned to the center position.
EAU12660
Engine stop switch “ I/”
Set this switch to “ I” before starting the
engine. Set this switch to “ ” to stop
the engine in case of an emergency,
such as when the motorcycle overturns
or when the throttle cable is stuck.
EAU12710
Start switch “J”
Push this switch to crank the engine
with the starter.
ECA10050CAUTION:
See page 5-1 for starting instruc-
tions prior to starting the engine.
,
B
B

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INSTRUMENT AND CONTROL FUNCTIONS
3-10
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EAU12733
Hazard switch “r”
With the key in the “ON” or Fposition,
use this switch to turn on the hazard
lights (simultaneous flashing of all turn
signal lights).
The hazard lights are used in case of
an emergency or to warn other drivers
when your vehicle is stopped where it
might be a traffic hazard.
ECA10061CAUTION:
Do not use the hazard lights for an
extended length of time with the
engine not running, otherwise the
battery may discharge.
EAU12820
Clutch lever
1. Clutch lever
The clutch lever is located at the left
handlebar grip. To disengage the
clutch, pull the lever toward the han-
dlebar grip. To engage the clutch, re-
lease the lever. The lever should be
pulled rapidly and released slowly for
smooth clutch operation.
The clutch lever is equipped with a
clutch switch, which is part of the igni-
tion circuit cut-off system. (See page
3-17).

1

EAU12870
Shift pedal
1. Shift pedal
The shift pedal is located on the left
side of the engine and is used in com-
bination with the clutch lever when
shifting the gears of the 5-speed con-
stant-mesh transmission equipped on
this motorcycle.

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INSTRUMENT AND CONTROL FUNCTIONS
3-11
EAU26822
Brake lever
1. Brake lever
2. Position adjusting dial
3. Arrow mark
4. Distance
The brake lever is located at the right
handlebar grip. To apply the front
brake, pull the lever toward the han-
dlebar grip.
The brake lever is equipped with a po-
sition adjusting dial. To adjust the dis-
tance between the brake lever and the
handlebar grip, turn the adjusting dial
while holding the lever pushed away
from the handlebar grip. Make sure
that the appropriate setting on the ad-
justing dial is aligned with the “˙”
mark on the brake lever.

EAU12941
Brake pedal
1. Brake pedal
The brake pedal is on the right side of
the motorcycle. To apply the rear
brake, press down on the brake pedal.

1

EAU13072
Fuel tank cap
1. Lock cover
2. Open
To open the fuel tank cap
Open the fuel tank cap lock cover, in-
sert the key into the lock, and then turn
it 1/4 turn clockwise. The lock will be re-
leased and the fuel tank cap can be
opened.

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INSTRUMENT AND CONTROL FUNCTIONS
3-12
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To close the fuel tank cap 1. Push the fuel tank cap into posi- tion with the key inserted in the
lock.
2. Turn the key counterclockwise to the original position, remove it,
and then close the lock cover.
NOTE:
The fuel tank cap cannot be closed
unless the key is in the lock. In addi-
tion, the key cannot be removed if the
cap is not properly closed and locked.
EWA11090
WARNING0
Make sure that the fuel tank cap is
properly closed before riding.

EAU13211
Fuel
1. Fuel tank filler tube
2. Fuel level
Make sure that there is sufficient fuel
in the tank. Fill the fuel tank to the bot-
tom of the filler tube as shown.
EWA10880
WARNING0
• Do not overfill the fuel tank,otherwise it may overflow when
the fuel warms up and expands.
• Avoid spilling fuel on the hot
engine.

ECA10070CAUTION:
Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted sur-
faces or plastic parts.
EAU13390
Recommended fuel: PREMIUM UNLEADED
GASOLINE ONLY
Fuel tank capacity: 23.0 L (6.07 US gal) (5.05 Imp.gal)
Fuel reserve amount (when the fuel
level warning light comes on): 6.7 L (1.77 US gal) (1.47 Imp.gal)

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INSTRUMENT AND CONTROL FUNCTIONS
3-13
EAU13412
Fuel tank breather hose
1. Fuel tank breather hose
2. Clamp
Before operating the motorcycle:
●Check the fuel tank breather hose
connection.
●Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.
●Make sure that the fuel tank
breather hose is not blocked, and
clean it if necessary.

ECA11400CAUTION:
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 de-
signed to use premium unleaded
gasoline with a research octane num-
ber 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.
EAU13431
Catalytic converter
This model is equipped with a catalyt-
ic converter in the exhaust system.
EWA10860
WARNING0
The exhaust system is hot after op-
eration. Make sure that the exhaust
system has cooled down before
doing any maintenance work.

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INSTRUMENT AND CONTROL FUNCTIONS
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To install the seat
1. Projections
2. Seat holders
1. Insert the projections on the front of the seat into the seat holders.
2. Push the rear of the seat down.
NOTE:
Make sure that the seat is properly se-
cured before riding.

EAU13870
Seat
To remove the seat
1. Seat lock
2. Unlock
1. Insert the key into the lock, and then turn it counterclockwise.
2. Pull the seat off.

ECA10700CAUTION:
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
possible fire hazards such as
grass or other materials that
easily burn.
●Do not allow the engine to idle
too long.

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INSTRUMENT AND CONTROL FUNCTIONS
3-15
EAUB1550
Adjusting the front fork
1. Spring preload adjusting bolt
(a) Increasing the spring preload
(b) Decreasing the spring preload
This front fork is equipped with spring
preload adjusting bolt.

EWA10180
WARNING0
Always adjust both fork legs equal-
ly, otherwise poor handling and
loss of stability may result.
Adjust the spring preload as follows.
To increase the spring preload and
thereby harden the suspension, turn
the adjusting bolts on each fork leg in
direction (a). To decrease the spring
preload and thereby soften the sus-
pension, turn the adjusting bolts on
each fork leg in direction (b).

Maximum (hard):0 complete turns in direction (b)*
Standard: 22 complete turns in direction (b)*
Minimum (soft): 27 complete turns in direction (b)*
* With the adjusting bolt fully turned in
direction (a)
NOTE:
Use the 10 mm hexagon wrench in-
cluded in the owner’s tool kit to turn
the adjusting bolts.

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INSTRUMENT AND CONTROL FUNCTIONS
3-16
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Adjust the spring preload as follows.
To increase the spring preload and
thereby harden the suspension, turn
the adjusting ring in direction (a).
To decrease the spring preload and
thereby soften the suspension, turn
the adjusting ring in direction (b).
NOTE:
Align the appropriate notch in the ad-
justing ring with the position indicator
on the shock absorber.
EWAB0020
WARNING0
Never adjust the spring preload un-
til the exhaust system has cooled
down.

EWA10220
WARNING0
This shock absorber contains high-
ly pressurized nitrogen gas. For
proper handling, read and under-
stand the following information be-
fore handling the shock absorber.
The manufacturer cannot be held
responsible for property damage or
personal injury that may result from
improper handling.
●Do not tamper with or attempt
to open the gas cylinder.
●Do not subject the shock ab-
sorber to an open flame or oth-
er high heat sources, otherwise
it may explode due to exces-
sive gas pressure.
●Do not deform or damage the
gas cylinder in any way, as this
will result in poor damping per-
formance.
●Always have a Yamaha dealer
service the shock absorber.

EAUB1460
Adjusting the shock
absorber assembly
1. Spring preload adjusting ring
2. Position indicator
(a) Increasing the spring preload
(b) Decreasing the spring preload
This shock absorber assembly is
equipped with a spring preload adjust-
ing ring.
ECA10100CAUTION:
Never attempt to turn an adjusting
mechanism beyond the maximum
or minimum settings.

Spring preload setting: Minimum (soft):1
Standard: 2
Maximum (hard): 9

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