2002 YAMAHA YZF-R6 wheel

PRE-OPERATION CHECKS
4-2
4
Control cables•Make sure that operation is smooth.
•Lubricate if necessary.6-31
Drive chain•Check chain slack.
•Adjust if necessary.
•Check chain condition.
•Lubricate if necessary.6-29–6-31
Wheels and tires•Check for damage.
•Check tire condition and tread depth.
•Check air pressure.
•Correct if necessary.6-21–6-24
Brake and shift pedals•Make sure that operation is smooth.
•Lubricate pedal pivoting points if necessary.6-32
Brake and clutch levers•Make sure that operation is smooth.
•Lubricate lever pivoting points if necessary.6-32
Sidestand•Make sure that operation is smooth.
•Lubricate pivot if necessary.6-33
Chassis fasteners•Make sure that all nuts, bolts and screws are properly tightened.
•Tighten if necessary.—
Instruments, lights, signals
and switches•Check operation.
•Correct if necessary.—
Sidestand switch•Check operation of ignition circuit cut-off system.
•If system is defective, have Yamaha dealer check vehicle.3-23
Air intake duct•Check that the screen is not clogged.
•Clean if necessary.6-19 ITEM CHECKS PAGE
U5MTE1.book Page 2 Monday, August 6, 2001 6:10 PM

6
PERIODIC MAINTENANCE AND MINOR REPAIR
Owner’s tool kit .................................................... 6-1
Periodic maintenance and lubrication chart ......... 6-3
Removing and installing the cowlings and
panel .................................................................. 6-6
Checking the spark plugs .................................... 6-8
Engine oil and oil filter cartridge .......................... 6-9
Coolant .............................................................. 6-13
Checking the air filter element ........................... 6-17
Air intake duct .................................................... 6-19
Adjusting the carburetors ................................... 6-20
Adjusting the engine idling speed ...................... 6-20
Adjusting the throttle cable free play .................. 6-21
Adjusting the valve clearance ............................ 6-21
Tires ................................................................... 6-21
Cast wheels ....................................................... 6-24
Adjusting the clutch lever free play .................... 6-25
Adjusting the brake pedal position ..................... 6-26
Adjusting the rear brake light switch .................. 6-26
Checking the front and rear brake pads ............. 6-27
Checking the brake fluid level ............................ 6-28
Changing the brake fluid .................................... 6-29
Drive chain slack ................................................ 6-29Lubricating the drive chain ................................ 6-31
Checking and lubricating the cables ................. 6-31
Checking and lubricating the throttle grip and
cable ............................................................... 6-32
Checking and lubricating the brake and
clutch levers .................................................... 6-32
Lubricating the brake pedal ............................... 6-32
Checking and lubricating the sidestand ............ 6-33
Lubricating the rear suspension ........................ 6-33
Checking the front fork ...................................... 6-33
Checking the steering ....................................... 6-34
Checking the wheel bearings ............................ 6-35
Battery ............................................................... 6-35
Replacing the fuses .......................................... 6-37
Replacing a headlight bulb ................................ 6-38
Tail/brake light ................................................... 6-39
Replacing a turn signal light bulb ...................... 6-39
Supporting the motorcycle ................................ 6-39
Front wheel ....................................................... 6-40
Rear wheel ........................................................ 6-41
Troubleshooting ................................................. 6-43
Troubleshooting charts ...................................... 6-44
U5MTE1.book Page 1 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-4
6
10
*Wheels•Check runout and for damage.√√√√
11*Tires•Check tread depth and for damage.
•Replace if necessary.
•Check air pressure.
•Correct if necessary.√√√√ √
12*Wheel bearings•Check bearing for looseness or damage.√√√√
13*Swingarm•Check operation and for excessive play.√√√√
•Lubricate with lithium-soap-based grease. Every 50,000 km
14 Drive chain•Check chain slack.
•Make sure that the rear wheel is properly aligned.
•Clean and lubricate.Every 1,000 km and after washing
the motorcycle or riding in the rain
15*Steering bearings•Check bearing play and steering for roughness.√√√√√
•Lubricate with lithium-soap-based grease. Every 20,000 km
16*Chassis fasteners•Make sure that all nuts, bolts and screws are properly tightened.√√√√ √
17 Sidestand•Check operation.
•Lubricate.√√√√ √
18*Sidestand switch•Check operation.√√√√√ √
19*Front fork•Check operation and for oil leakage.√√√√
20*Shock absorber
assembly•Check operation and shock absorber for oil leakage.√√√√
21*Rear suspension relay
arm and connecting arm
pivoting points•Check operation.√√√√
•Lubricate with lithium-soap-based grease.√√
22*Carburetors•Check starter (choke) operation.
•Adjust engine idling speed and synchronization.√√√√√ √
23 Engine oil•Change.
•Check oil level and vehicle for oil leakage.√√√√√ √
24 Engine oil filter cartridge•Replace.√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (×1,000 km)
ANNUAL
CHECK
1 10203040
U5MTE1.book Page 4 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-23
6Tire inspection
The tires must be checked before each
ride. If the center tread depth reaches
the specified limit, if the tire has a nail
or glass fragments in it, or if the side-
wall is cracked, have a Yamaha dealer
replace the tire immediately.
CE-08ENOTE:@ The tire tread depth limits may differ
from country to country. Always comply
with the local regulations. @
EW000079
WARNING
@

Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the
motorcycle with excessively
worn tires decreases riding sta-
bility and can lead to loss of
control.


The replacement of all wheel-
and brake-related parts, includ-
ing the tires, should be left to a
Yamaha dealer, who has the
necessary professional knowl-
edge and experience.
@
Tire information
This motorcycle is equipped with cast
wheels and tubeless tires with valves.
EW000080
WARNING
@

The front and rear tires should
be of the same make and de-
sign, otherwise the handling
characteristics of the motor-
cycle cannot be guaranteed.


After extensive tests, only the
tires listed below have been ap-
proved for this model by
Yamaha Motor Co., Ltd.
1. Tire sidewall
a. Tire tread depthMinimum tire tread depth
(front and rear)1.6 mm
1. Tire air valve
2. Tire air valve core
3. Tire air valve cap with seal
U5MTE1.book Page 23 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
6


Always make sure that the valve
caps are securely installed to
prevent air pressure leakage.


Use only the tire valves and
valve cores listed below to
avoid tire deflation during a
high-speed ride.
@CE-10E
CE-14EEAU00684
WARNING
@ This motorcycle is fitted with super-
high-speed tires. Note the following
points in order to make the most ef-
ficient use of these tires.

Use only the specified replace-
ment tires. Other tires may run
the danger of bursting at super
high speeds.


Brand-new tires can have a rela-
tively poor grip on certain road
surfaces until they have been
“broken in”. Therefore, it is ad-
visable before doing any high-
speed riding to ride conserva-
tively for approximately 100 km
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 operating
conditions.
@
EAU03773
Cast 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 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.
FRONT
Manufacturer Size Model
Michelin
120/60 ZR17 (55W)
Pilot SPORT B
120/60 ZR17 M/C (55W)
Dunlop
120/60 ZR17 (55W)
D207FJ
120/60 ZR17 M/C (55W)
REAR
Manufacturer Size Model
Michelin
180/55 ZR17 (73W)
Pilot SPORT B
180/55 ZR17 M/C (73W)
Dunlop
180/55 ZR17 (73W)
D207N
180/55 ZR17 M/C (73W)FRONT & REAR
Tire air valve TR412
Valve core #9000A (original)
U5MTE1.book Page 24 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
6 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.
EAU03608
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. _
EC000096
CAUTION:_ 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 the
specified limits. _3. Tighten the locknuts, and then
tighten the axle nut to the specified
torque.
a. Drive chain slack
Drive chain slack:
40–50 mm
1. Axle nut
2. Drive chain slack adjusting bolt
3. Locknut
4. Alignment marks
Tightening torque:
Axle nut:
150 Nm (15.0 m·kgf)
U5MTE1.book Page 30 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-34
6 To check the operation
1. Place the motorcycle on a level
surface and hold it in an upright
position.
2. While applying the front brake,
push down hard on the handle-
bars several times to check if the
front fork compresses and re-
bounds smoothly.
EC000098
CAUTION:@ If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it. @
EAU00794
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.
EW000115
WARNING
@ Securely support the motorcycle so
that there 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.
U5MTE1.book Page 34 Monday, August 6, 2001 6:10 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-35
6
EAU01144
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.
EAU01291
Battery This motorcycle is equipped with a
sealed-type (MF) battery, which does
not require any maintenance. There is
no need to check the electrolyte or to
add distilled water.
To charge the battery
Have a Yamaha dealer charge the bat-
tery as soon as possible if it seems to
have discharged. Keep in mind that the
battery tends to discharge more quickly
if the motorcycle is equipped with op-
tional electrical accessories.
EW000116
WARNING
@

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
working near batteries. In case
of contact, administer the fol-
lowing FIRST AID.
EXTERNAL: Flush with plenty
of water.
INTERNAL: Drink large quan-
tities of water or milk and im-
mediately call a physician.
EYES: Flush with water for
15 minutes and seek prompt
medical attention.


Batteries produce explosive hy-
drogen gas. Therefore, keep
sparks, flames, cigarettes, etc.,
away from the battery and pro-
vide sufficient ventilation when
charging it in an enclosed
space.
U5MTE1.book Page 35 Monday, August 6, 2001 6:10 PM