Page 58 of 95

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6 Tire inspection
Always check the tires before operating
the motorcycle. If center tread depth
reaches the limit as shown, if the tire
has a nail or glass fragments in it, or if
the side wall is cracked, contact a
Yamaha dealer immediately and have
the tire replaced.
EW000095
WARNING
@ Operating the motorcycle with ex-
cessively worn tires decrease riding
stability and can lead to loss of con-
trol. Have excessively worn tires re-
placed by a Yamaha dealer
immediately. Brakes, tires, and relat-
ed wheel parts replacement should
be left to a Yamaha Service Techni-
cian. @CE-26ENOTE:@ These limits may be different by regula-
tion from country to country. If so, con-
form to the limits specified by the
regulations of your own country. @
Tire information
This motorcycle is equipped with tube-
less tires, tire valves and cast wheels.
1. Side wall
a. Tread depth
Minimum tire tread depth
(front and rear)1.6 mm
1. Tire valve
2. Valve core
3. Valve cap with seal
Page 60 of 95

PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6
EAU00687
WheelsTo ensure maximum performance,
long service, and safe operation, note
the following:l
Always inspect the wheels before
a ride. Check for cracks, bends, or
warpage of the wheels. If any ab-
normal condition exists in a wheel,
consult a Yamaha dealer. Do not
attempt even small repairs to the
wheel. If a wheel is deformed or
cracked, it must be replaced.
l
Tires and wheels should be bal-
anced whenever either one is
changed or replaced. Failure to
have a wheel balanced can result
in poor performance, adverse han-
dling characteristics, and short-
ened tire life.
l
Ride at moderate speeds after
changing a tire since the tire sur-
face must first be broken in for it to
develop its optimal characteristics.
EAU00712
Rear brake pedal height
adjustmentThe top of the brake pedal should be
positioned 40 mm below the top of the
footrest. If not, ask a Yamaha dealer to
adjust it.
EW000109
WARNING
@ A soft or spongy feeling in the brake
pedal can indicate the presence of
air in the brake system. This air
must be removed by bleeding the
brake system before the motorcycle
is operated. Air in the system will
cause greatly diminished braking
capability and can result in loss of
control and an accident. Have a
Yamaha dealer inspect and bleed
the system if necessary. @
a. Brake pedal height
Page 61 of 95
PERIODIC MAINTENANCE AND MINOR REPAIR
6-17
6
EAU01756
Brake light switch adjustmentThe rear brake light switch is activated
by the brake pedal and is properly ad-
justed when the brake light comes on
just before braking takes effect. Adjust
the brake light switch as follows.
1. Remove panel A. (See page 6-5
for panel removal and installation
procedures.)
2. Hold the switch body so it does not
rotate while turning the adjusting
nut.3. Turn the adjusting nut in
direction
a to make the brake
light come on earlier.
Turn the adjusting nut in
direction
b to make the brake
light come on later.
EAU00715
Checking the front and rear
brake padsA wear indicator is provided on each
brake. This indicator allows checking of
brake pad wear without disassembling
the brake. Apply the brake and inspect
the wear indicator. If the indicator is
ALMOST in contact with the disc plate,
ask a Yamaha dealer to replace the
pads.
1. Brake light switch
2. Adjusting nut
1. Wear indicator (´ 2)Front
Rear
Page 62 of 95

PERIODIC MAINTENANCE AND MINOR REPAIR
6-18
6
EAU01800*
Inspecting the brake fluid levelInsufficient brake fluid may let air enter
the brake or clutch system, possibly
causing them to become ineffective.
Before riding, check that the brake fluid
is above the minimum level and fill
when necessary. Low brake fluid levels
may indicate worn brake pads and/or
fluid leakage. If the brake fluid level is
low, be sure to inspect the brake pads
for wear and the brake and clutch sys-
tems for leakage.NOTE:The rear master cylinder is located be-
hind panel A.
Observe these precautions:l
When checking the fluid level,
make sure the top of the master
cylinder is level by turning the han-
dlebars.
l
Use only the designated quality
brake fluid. Otherwise, the rubber
seals may deteriorate, causing
leakage and poor brake or clutch
performance.
l
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor brake or clutch perfor-
mance.
l
Be careful that water does not en-
ter the master cylinder when refill-
ing. Water will significantly lower
the boiling point of the fluid and
may result in vapor lock.
l
Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.
l
Have a Yamaha dealer check the
cause if the brake fluid level goes
down.
1. Minimum level markFront
1. Minimum level markRecommended brake fluid: DOT 4Rear
1. Minimum level markClutch
Page 63 of 95

PERIODIC MAINTENANCE AND MINOR REPAIR
6-19
6
EAU00742
Brake fluid replacementThe brake fluid should be replaced only
by trained Yamaha service personnel.
Have the Yamaha dealer replace the
following components during periodic
maintenance or when they are dam-
aged or leaking:l
oil seals (every two years)
l
brake hoses (every four years)
EAU00745
Drive chain slack checkNOTE:@ Spin the wheel several times and find
the tightest position of the chain. Check
and/or adjust the chain slack while it’s
in this tightest position. @Inspect the drive chain when the motor-
cycle is on the centerstand. Check the
slack at the position shown in the illus-
tration. Normal slack is approximately
20 ~ 30 mm. If the slack exceeds
30 mm, adjust.
EAU01251
Drive chain slack adjustment1. Loosen the axle nut.
2. Loosen the locknuts on each side.
To tighten the chain, turn the chain
adjusting bolts in direction
a.
To loosen the chain, turn the ad-
justing bolts in direction
b and
push the wheel forward. Turn each
adjusting bolt exactly the same
amount to maintain correct axle
alignment. There are marks on
each side of the swingarm. Use
these marks to align the rear
wheel.
a. Chain slack
1. Locknut
2. Adjusting bolt
3. Axle nut
4. Alignment marks
Page 65 of 95
PERIODIC MAINTENANCE AND MINOR REPAIR
6-21
6
EAU00773
Throttle cable and grip
lubricationThe throttle twist grip assembly should
be greased at the time that the cable is
lubricated, since the grip must be re-
moved to get at the end of the throttle
cable. After removing the screws, hold
the end of the cable up in the air and
put in several drops of lubricant. With
the throttle grip disassembled, coat the
metal surface of the grip assembly with
a suitable all-purpose grease.
EAU02984
Brake and shift pedal
lubricationLubricate the pivoting parts.
EAU02985
Brake and clutch lever
lubricationLubricate the pivoting parts.
Recommended lubricant:
Engine oil
Recommended lubricant:
Engine oil
Page 66 of 95
PERIODIC MAINTENANCE AND MINOR REPAIR
6-22
6
EAU02965
Center and sidestand
lubricationLubricate the pivoting and mating
joints. Check to see that the center and
sidestand move up and down smooth-
ly.
EW000114
WARNING
@ If the center and/or sidestand does
not move smoothly, consult a
Yamaha dealer. @
EAU02939
Front fork inspectionVisual check
EW000115
WARNING
@ Securely support the motorcycle so
there is no danger of it falling over. @Check for scratches or damage on the
inner tube and excessive oil leakage
from the front fork.
Operation check
1. Place the motorcycle on a level
place.
2. Hold the motorcycle in an upright
position and apply the front brake.
3. Push down hard on the handle-
bars several times and check if the
fork rebounds smoothly.
EC000098
CAUTION:@ If any damage or unsmooth move-
ment is found with the front fork,
consult a Yamaha dealer. @
Recommended lubricant:
Engine oil
Page 71 of 95
PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6
EAU00856*
Tail/brake light bulb
replacement1. Remove the seat.
2. To remove the socket, turn it coun-
terclockwise.
3. To remove the defective bulb, turn
it counterclockwise.
4. Push a new bulb into the socket
and turn it clockwise.
5. Install the socket and turn it clock-
wise.
6. Install the seat.
EAU01095
Turn signal light bulb
replacement1. Remove the screw and the lens.2. Remove the defective bulb by
pushing it inward and turning it
counterclockwise.
3. Install a new bulb by pushing it in-
ward and turning it clockwise.
4. Install the lens and tighten the
screw.1. Screw
1. Bulb