Page 59 of 92

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
6 speed riding to ride conserva-
tively for approximately 100 km
(60 mi) after installing a new tire.
The tires must be warmed up
before a high-speed run.
Always adjust the tire air pres-
sure according to the operatingconditions.
EAU21960
Cast wheels To maximize the performance, durabil-
ity, and safe operation of your vehicle,
note the following points regarding the
specified wheels.
The wheel rims should be checked
for cracks, bends or warpage be-
fore each ride. If any damage is
found, have a Yamaha dealer re-
place 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.
EAU22072
Clutch lever Since this model is equipped with a hy-
draulic clutch, adjusting the clutch lever
free play is not needed. However, it is
necessary to check the clutch fluid level
and check the hydraulic system for
leakage before each ride. If the clutch
lever free play does become excessive,
and shifting becomes rough or clutch
slippage occurs, causing poor acceler-
ation, there may be air in the clutch sys-
tem. If there is air in the hydraulic
system, have a Yamaha dealer bleed
the system before operating the motor-
cycle.
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Page 63 of 92

PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6
EAU22760
Drive chain slack The drive chain slack should be
checked before each ride and adjusted
if necessary.
EAU22793
To check the drive chain slack
1. Place the motorcycle on the cen-
terstand.
2. Shift the transmission into the neu-
tral position.
3. Spin the rear wheel several times
to locate the tightest portion of the
drive chain.
4. Measure the drive chain slack as
shown.5. 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
Drive chain slack:
20.0–30.0 mm (0.79–1.18 in)
1. Locknut
2. Drive chain slack adjusting bolt
3. Axle nut
4. Alignment marks
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
6
EAU23271
Checking the front fork The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic main-
tenance and lubrication chart.
To check the condition
WARNING
EWA10750
Securely support the vehicle so thatthere is no danger of it falling over.
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation
1. Place the vehicle on a level sur-
face and hold it in an upright posi-
tion.
2. While applying the front brake,
push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
CAUTION:
ECA10590
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-pair it.
EAU23280
Checking the steering Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Place a stand under the engine to
raise the front wheel off the
ground.
WARNING
EWA10750
Securely support the vehicle so thatthere is no danger of it falling over.
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.
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Page 69 of 92
PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
EAU23290
Checking the wheel bearings The front and rear wheel bearings must
be checked at the intervals specified in
the periodic maintenance and lubrica-
tion 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.
EAU33650
Battery This model is equipped with a sealed-
type (MF) battery, which does not re-
quire any maintenance. There is no
need to check the electrolyte or to add
distilled water.
WARNING
EWA10760
Electrolyte is poisonous and
dangerous since it contains sul-
furic acid, which causes severe
burns. Avoid any contact with
skin, eyes or clothing and al-
ways shield your eyes when
1. Negative battery terminal
2. Positive battery terminal
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Page 75 of 92

PERIODIC MAINTENANCE AND MINOR REPAIR
6-31
6
EAU33541
Replacing the auxiliary light
bulb If the auxiliary light bulb burns out, re-
place it as follows.
1. Remove the headlight unit by re-
moving the screws.
2. Remove the socket (together with
the bulb) by pulling it out.3. Remove the defective bulb by
pushing it in and turning it counter-
clockwise.
4. Insert a new bulb into the socket,
push it in, and then turn it clock-
wise until it stops.
5. Install the socket (together with the
bulb) by pushing it in.
6. Install the headlight unit by install-
ing the screws.
EAU24360
Front wheel
EAU38890
To remove the front wheel
WARNING
EWA10820
It is advisable to have a Yamaha
dealer service the wheel.
Securely support the motor-
cycle so that there is no dangerof it falling over.
1. Place the motorcycle on the cen-
terstand.
2. Loosen the front wheel axle pinch
bolt, then the wheel axle and the
brake caliper bolts.
1. Screw
1. Auxiliary light bulb socket
1. Wheel axle
2. Front wheel axle pinch bolt
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Page 76 of 92

PERIODIC MAINTENANCE AND MINOR REPAIR
6-32
63. Remove the brake hose holder on
each side by removing the bolt.
4. Remove the brake caliper on each
side by removing the bolts.
CAUTION:
ECA11050
Do not apply the brake after the
brake calipers have been removed,
otherwise the brake pads will beforced shut.
5. Pull the wheel axle out, and then
remove the wheel.
EAU33660
To install the front wheel
1. Lift the wheel up between the fork
legs.
2. Insert the wheel axle.
3. Install the brake calipers by install-
ing the bolts.NOTE:Make sure that there is enough space
between the brake pads before install-
ing the brake calipers onto the brakediscs.
4. Install the brake hose holders by
installing the bolts.
5. Take the motorcycle off the center-
stand so that the front wheel is on
the ground.
6. Tighten the wheel axle, the front
wheel axle pinch bolt and the
brake caliper bolts to the specified
torques.7. Push down hard on the handlebar
several times to check for proper
fork operation.
1. Brake caliper bolt
2. Brake hose holder
3. Brake caliper
4. Bolt
Tightening torques:
Wheel axle:
72 Nm (7.2 m·kgf, 52 ft·lbf)
Front wheel axle pinch bolt:
20 Nm (2.0 m·kgf, 14 ft·lbf)
Brake caliper bolt:
40 Nm (4.0 m·kgf, 29 ft·lbf)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-33
6
EAU25080
Rear wheel
EAU25161
To remove the rear wheel
WARNING
EWA10820
It is advisable to have a Yamaha
dealer service the wheel.
Securely support the motor-
cycle so that there is no dangerof it falling over.
1. Loosen the axle nut and the brake
caliper bolts.
2. Disconnect the brake torque rod
from the brake caliper bracket by
removing the nut and the bolt.3. Place the motorcycle on the cen-
terstand.
4. Remove the axle nut and the brake
caliper by removing the bolts.
CAUTION:
ECA11300
Do not apply the brake after the
brake caliper has been removed,
otherwise the brake pads will beforced shut.5. Loosen the locknuts, and then turn
the drive chain slack adjusting bolt
on each side of the swingarm fully
in direction (a).
6. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
NOTE:The drive chain does not need to be
disassembled in order to remove andinstall the rear wheel.
7. While supporting the wheel and
the brake caliper bracket, pull the
wheel axle out.
1. Axle nut
1. Brake caliper bolt
2. Brake torque rod
3. Bolt
4. Brake caliper bracket
5. Brake caliper
6. Nut
1. Wheel axle
2. Drive chain slack adjusting bolt
3. Locknut
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Page 78 of 92

PERIODIC MAINTENANCE AND MINOR REPAIR
6-34
68. Remove the brake caliper bracket
and the wheel.
EAU25841
To install the rear wheel
1. Place the wheel and the brake cal-
iper bracket in the original position.
2. Insert the wheel axle through the
brake caliper bracket and wheel
from the right-hand side, and then
install the axle nut.
3. Install the drive chain onto the rear
sprocket, and then adjust the drive
chain slack. (See page 6-19.)
4. Connect the brake torque rod to
the brake caliper bracket by install-
ing the bolt and the nut.
5. Install the brake caliper by install-
ing the bolts.NOTE:Make sure that there is enough space
between the brake pads before install-
ing the brake caliper onto the brakedisc.
6. Take the motorcycle off the center-
stand so that the rear wheel is on
the ground.7. Tighten the axle nut, brake caliper
bolts and brake torque rod nut to
the specified torques.
EAU25850
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
Tightening torques:
Axle nut:
150 Nm (15.0 m·kgf, 110 ft·lbf)
Brake caliper bolt:
40 Nm (4.0 m·kgf, 29 ft·lbf)
Brake torque rod nut:
23 Nm (2.3 m·kgf, 17 ft·lbf)
U5WME4E0.book Page 34 Friday, July 6, 2007 2:43 PM