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INSTRUMENT AND CONTROL FUNCTIONS
3-14
3
EAU34071
Fuel tank breather/overflow
hose Before operating the motorcycle:
Check the fuel tank breather/over-
flow hose connection.
Check the fuel tank breather/over-
flow 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 po-
sitioned outside of the cowling.
EAU13441
Catalytic converter This vehicle is equipped with catalytic
converters 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.
EAU36691
Seat To remove the seat
1. Insert the key into the seat lock,
and then turn it clockwise.
2. Pull the seat off.
To install the seat
1. Insert the projections into the hold-
ers as shown.
1. Fuel tank breather/overflow hose
2. Cowling
1. Seat lock
2. Unlock.
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INSTRUMENT AND CONTROL FUNCTIONS
3-15
3
2. Push the center 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.
EAU36930
Adjusting the front fork This front fork is equipped with spring
preload adjusting bolts, rebound damp-
ing force adjusting screws and com-
pression damping force adjusting
screws.
WARNING
EWA10180
Always adjust both fork legs equal-
ly, otherwise poor handling and lossof stability may result.
Spring preload
To increase the spring preload and
thereby harden the suspension, turn
the adjusting bolt on each fork leg in di-
rection (a). To decrease the spring pre-load and thereby soften the
suspension, turn the adjusting bolt on
each fork leg in direction (b).
NOTE:Align the appropriate groove on the ad-
justing mechanism with the top of thefront fork collar.
1. Seat holder
2. Projection
1. Spring preload adjusting bolt
1. Current setting
2. Front fork collar
Spring preload setting:
Minimum (soft):
0
Standard:
2
Maximum (hard):
5
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INSTRUMENT AND CONTROL FUNCTIONS
3-17
3
EAU36751
Adjusting the shock absorber
assembly This shock absorber assembly is
equipped with a spring preload adjust-
ing nut, a rebound damping force ad-
justing knob and a compression
damping force adjusting screw.CAUTION:
ECA10100
Never attempt to turn an adjusting
mechanism beyond the maximum orminimum settings.
Spring preload
Adjust the spring preload as follows.
1. Loosen the locknut.2. To increase the spring preload and
thereby harden the suspension,
turn the adjusting nut in direction
(a). To decrease the spring pre-
load and thereby soften the sus-
pension, turn the adjusting nut in
direction (b).
NOTE:The spring preload setting is deter-
mined by measuring distance A, shown
in the illustration. The longer distance A
is, the lower the spring preload; the
shorter distance A is, the higher thespring preload.3. Tighten the locknut to the specified
torque.
1. Locknut
2. Spring preload adjusting nut
1. Special wrench
1. Distance A
Spring preload:
Minimum (soft):
Distance A = 155.0 mm (6.10 in)
Standard:
Distance A = 150.0 mm (5.91 in)
Maximum (hard):
Distance A = 145.0 mm (5.71 in)
Tightening torque:
Locknut:
42 Nm (4.2 m·kgf, 30 ft·lbf)
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INSTRUMENT AND CONTROL FUNCTIONS
3-18
3
CAUTION:
ECA10120
Always tighten the locknut against
the adjusting nut, and then tightenthe locknut to the specified torque.
Rebound damping force
To increase the rebound damping force
and thereby harden the rebound damp-
ing, turn the adjusting knob in direction
(a). To decrease the rebound damping
force and thereby soften the rebound
damping, turn the adjusting knob in di-
rection (b).Compression damping force
To increase the compression damping
force and thereby harden the compres-
sion damping, turn the adjusting screw
in direction (a). To decrease the com-
pression damping force and thereby
soften the compression damping, turn
the adjusting screw in direction (b).
NOTE:
Although the total number of clicks of a
damping force adjusting mechanism
may not exactly match the above spec-
ifications due to small differences in
production, the actual number of clicks
always represents the entire adjusting
range. To obtain a precise adjustment,
it would be advisable to check the num-
ber of clicks of each damping force ad-
justing mechanism and to modify thespecifications as necessary.
WARNING
EWA10220
This shock absorber contains highly
pressurized nitrogen gas. For prop-
er handling, read and understand
the following information before
handling the shock absorber. The
1. Rebound damping force adjusting knob
Rebound damping setting:
Minimum (soft):
20 click(s) in direction (b)*
Standard:
12 click(s) in direction (b)*
Maximum (hard):
3 click(s) in direction (b)*
* With the adjusting knob fully turned
in direction (a)1. Compression damping force adjusting screw
Compression damping setting:
Minimum (soft):
12 click(s) in direction (b)*
Standard:
10 click(s) in direction (b)*
Maximum (hard):
1 click(s) in direction (b)*
* With the adjusting screw fully turned
in direction (a)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6
EAU36730
Checking the brake and clutch
fluid levels Front brake
Rear brakeClutch
Insufficient brake or clutch fluid may al-
low air to enter the brake or clutch sys-
tems, possibly causing them to become
ineffective.
NOTE:The rear brake fluid reservoir is locatedunder the seat. (See page 3-14.)
Before riding, check that the brake and
clutch fluids are above the minimum
level marks and replenish if necessary.
A low brake or clutch fluid level may in-
dicate brake or clutch system leakage
and/or worn brake pads. If the brake or
clutch levels are low, be sure to check
the brake or clutch systems for leakage
and the brake pads for wear.Observe these precautions:
When checking the brake and
clutch fluid levels, make sure that
the top of each reservoir is level.
Use only the recommended quality
brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking or clutch
performance.
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking or clutch per-
formance.
Be careful that water does not en-
ter the brake or clutch fluid reser-
voir 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.
1. Minimum level mark
1. Minimum level mark
1. Minimum level mark
Recommended brake and clutch flu-
id:
DOT 4 brake fluid
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-18
64. If the drive chain slack is incorrect,
adjust it as follows.
EAU34311
To adjust the drive chain slack
1. Loosen the axle nut and the lock-
nut on each side of the swingarm.2. To tighten the drive chain, turn the
adjusting bolt on each side of the
swingarm in direction (a). To loos-
en the drive chain, turn the adjust-
ing bolt on each side of the
swingarm in direction (b), and then
push the rear wheel forward.
NOTE:Using the alignment marks on each
side of the swingarm, make sure that
both chain pullers are in the same posi-tion for proper wheel alignment.
CAUTION:
ECA10570
Improper 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 thespecified limits.
3. Tighten the locknuts, then the axle
nut to their specified torques.
1. Drive chain slack
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
Tightening torques:
Locknut:
16 Nm (1.6 m·kgf, 12 ft·lbf)
Axle nut:
150 Nm (15.0 m·kgf, 108 ft·lbf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
EAU23624
Replacing the fuses
The main fuse and the fuse box, which
contains the fuses for the individual cir-
cuits, are located under the seat. (See
page 3-14.)
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off
the electrical circuit in question.2. Remove the blown fuse, and then
install a new fuse of the specified
amperage.
1. Main fuse
2. Fuel injection system fuse
3. Fuel injection system spare fuse
4. Fuse box
1. Fuse box
2. Headlight fuse
3. Signaling system fuse
4. Ignition fuse
5. Muffler cover fan fuse
6. Backup fuse (for odometer, clock and immo-
bilizer system)
7. Auto-decompression fuse
8. ECU fuse
9. Parking lighting fuse
10.Spare fuse
Specified fuses:
Main fuse:
50.0 A
Headlight fuse:
15.0 A
Ignition fuse:
25.0 A
Signaling system fuse:
10.0 A
Parking lighting fuse:
10.0 A
Muffler cover fan fuse:
15.0 A
ECU fuse:
10.0 A
Backup fuse:
10.0 A
Auto-decompression fuse:
15.0 A
Fuel injection system fuse:
15.0 A
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-26
6
CAUTION:
ECA10640
Do not use a fuse of a higher amper-
age rating than recommended to
avoid causing extensive damage to
the electrical system and possibly afire.
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.
EAU36820
Replacing a headlight bulb This model is equipped with quartz bulb
headlights. If a headlight bulb burns
out, replace it as follows.
To replace a headlight bulb
1. Remove the headlight unit by re-
moving the bolts on each side.To replace the high beam head-
light bulba. Remove the headlight bulb
holder cover by turning it coun-
terclockwise.
1. Low beam headlight bulb
2. High beam headlight bulb
1. Bolt
1. Headlight bulb cover
U5YUE0E0.book Page 26 Monday, November 15, 2004 8:48 AM