2003 YAMAHA YZF-R6 suspension

INSTRUMENT AND CONTROL FUNCTIONS
3-23
3
EAU04944*
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.
EW000035
WARNING
_ Always adjust both fork legs equal-
ly, otherwise poor handling and loss
of 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 the
front fork cap bolt. _CI-18E
1. Spring preload adjusting bolt
1. Current setting
2. Front fork cap bolt
Setting
Minimum (soft) 8
Standard 7
Maximum (hard) 1
U5SLE0.book Page 23 Wednesday, September 11, 2002 11:46 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-25
3
EAU04496
Adjusting the shock absorber
assembly This shock absorber assembly is
equipped with a spring preload adjust-
ing ring and rebound and compression
damping force adjusting screws.
EC000015
CAUTION:_ Never attempt to turn an adjusting
mechanism beyond the maximum
or minimum settings. _
Spring preload
To increase the spring preload and
thereby harden the suspension, turn
the adjusting ring in direction
a. To de-
crease the spring preload and thereby
soften the suspension, turn the adjust-
ing ring in direction
b.
NOTE:_

Align the appropriate notch in the
adjusting ring with the position in-
dicator on the shock absorber.


Use the special wrench included in
the owner’s tool kit to make the ad-
justment.
_CI-10E
1. Spring preload adjusting ring
2. Special wrench
3. Position indicator
Setting
Minimum (soft) 1
Standard 4
Maximum (hard) 9
U5SLE0.book Page 25 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
10
*TiresCheck tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.√√√√ √
11*Wheel bearingsCheck bearing for looseness or damage.√√√√
12*SwingarmCheck operation and for excessive play.√√√√
Lubricate with lithium-soap-based grease. Every 50,000 km
13 Drive chainCheck chain slack.
Make sure that the rear wheel is properly aligned.
Clean and lubricate.Every 800 km and after washing
the motorcycle or riding in the rain
14*Steering bearingsCheck bearing play and steering for roughness.√√√√√
Lubricate with lithium-soap-based grease. Every 20,000 km
15*Chassis fastenersMake sure that all nuts, bolts and screws are properly
tightened.√√√√ √
16 SidestandCheck operation.
Lubricate.√√√√ √
17*Sidestand switchCheck operation.√√√√√ √
18*Front forkCheck operation and for oil leakage.√√√√
19*Shock absorber
assemblyCheck operation and shock absorber for oil leakage.√√√√
20*Rear suspension relay
arm and connecting arm
pivoting pointsCheck operation.√√√√
21*Electronic fuel injectionAdjust engine idling speed and synchronization.√√√√√ √
22 Engine oilChange.
Check oil level and vehicle for oil leakage.√√√√√ √
23 Engine oil filter cartridgeReplace.√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (×1,000 km)
ANNUAL
CHECK
1 10203040
U5SLE0.book Page 3 Wednesday, September 11, 2002 11:46 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-25
6
EWA00012
WARNING
@ Because loading has an enormous
impact on the handling, braking,
performance and safety characteris-
tics of your motorcycle, you should
keep the following precautions in
mind.

NEVER OVERLOAD THE
MOTORCYCLE! Operation of an
overloaded motorcycle may re-
sult in tire damage, loss of con-
trol, or severe injury. Make sure
that the total weight of rider,
passenger, cargo, and accesso-
ries does not exceed the speci-
fied maximum load for the
vehicle.


Do not carry along loosely
packed items, which can shift
during a ride.


Securely pack the heaviest
items close to the center of the
motorcycle and distribute the
weight evenly on both sides.


Adjust the suspension and tire
air pressure with regard to the
load.


Check the tire condition and air
pressure before each ride.
@
Tire 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. @1. Tire sidewall
a. Tire tread depthMinimum tire tread depth
(front and rear)1.6 mm
U5SLE0.book Page 25 Wednesday, September 11, 2002 11:46 AM

SPECIFICATIONS
8-3
8
Maximum load* 193 kg
Tire air pressure (measured on
cold tires)
Up to 90 kg*
Front 250 kPa (2.50 kgf/cm
2, 2.50 bar)
Rear 250 kPa (2.50 kgf/cm2, 2.50 bar)
90 kg–maximum*
Front 250 kPa (2.50 kgf/cm2, 2.50 bar)
Rear 290 kPa (2.90 kgf/cm2, 2.90 bar)
High-speed riding*
Front 250 kPa (2.50 kgf/cm2, 2.50 bar)
Rear 250 kPa (2.50 kgf/cm2, 2.50 bar)
* Total weight of rider, passenger, cargo and accessories
Wheels
Front
Type Cast wheel
Size 17 M/C × MT 3.50
Rear
Type Cast wheel
Size 17 M/C × MT 5.50Brakes
Fr o n t
Type Dual disc brake
Operation Right hand
Fluid DOT 4
Rear
Type Single disc brake
Operation Right foot
Fluid DOT 4
Suspension
Front Telescopic fork
Rear Swingarm (link suspension)
Spring/shock absorber
Front Coil spring / oil damper
Rear Coil spring / gas-oil damper
Wheel travel
Front 120 mm
Rear 120 mm
Electrical system
Ignition system DC-C.D.I.
Charging system
Model A.C. magneto
Standard output 14 V, 300 W@ 5,000 r/min
U5SLE0.book Page 3 Wednesday, September 11, 2002 11:46 AM