Yamaha R1 2004 ServiceManual

3-54
ADJUSTING THE FRONT FORK LEGS
CHK
ADJ
WARNING
CAUTION:
a
b
CAUTION:
EAS00155
ADJUSTING THE FRONT FORK LEGS
The following procedure applies to both of the
front fork legs.

Always adjust both front fork legs evenly.
Uneven adjustment can result in poor han-
dling and loss of stability.

Securely support the motorcycle so that
there is no danger of it falling over.
Spring preload

Grooves are provided to indicate the ad-
justment position.

Never go beyond the maximum or mini-
mum adjustment...

3-55
ADJUSTING THE FRONT FORK LEGS
CHK
ADJ
a
b
CAUTION:
a
b
1. Adjust:

rebound damping
a. Turn the adjusting screw 
1 in direction a or
b.
Direction
Rebound damping is
increased (suspension is
harder).
Direction
Rebound damping is
decreased (suspension 
is softer).
Adjusting positions
Minimum: 26 clicks in direction 
b *
Standard: 10 clicks in direction 
b *
Maximum: 1 clicks in direction 
b *
* with the adjusting screw fully 
turned-in direction 
a
Compression damping
Never go beyond the maximum or...

3-56
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY
CHK
ADJ
WARNING
CAUTION:
a
b
CAUTION:
EAS00158
ADJUSTING THE REAR SHOCK 
ABSORBER ASSEMBLY
Securely support the motorcycle so that
there is no danger of it falling over.
Spring preload
Never go beyond the maximum or minimum
adjustment positions.
1. Adjust:

spring preload
a. Adjust the spring preload with the special
wrench and extension bar included in the
owner’s tool kit.
b. Turn the adjusting ring 
1 in direction a or
b.
c. Align the desired position on...

3-57
ADJUSTING THE REAR SHOCK ABSORBER ASSEMBLY
CHK
ADJ
a
b
CAUTION:
a
b
1. Adjust:

rebound damping
a. Turn the adjusting screw 
1 in direction a or
b.
Direction
Rebound damping is
increased (suspension is
harder).
Direction
Rebound damping is
decreased (suspension 
is softer).
Adjusting positions
Minimum: 20 clicks in direction 
b *
Standard: 17 clicks in direction 
b *
Maximum: 1 clicks in direction 
b *
* with the adjusting screw fully 
turned-in direction 
a
Compression damping
Never go beyond the...

3-58
CHECKING THE TIRES
CHK
ADJ
WARNING
WARNING
EAS00162
CHECKING THE TIRES
The following procedure applies to both of the
tires.
1. Check:

tire pressure
Out of specification 
 Regulate.

The tire pressure should only be checked
and regulated when the tire temperature
equals the ambient air temperature.

The tire pressure and the suspension must
be adjusted according to the total weight
(including cargo, rider, passenger and ac-
cessories) and the anticipated riding
speed.

Operation of an overloaded...

3-59
AB
CHECKING THE TIRES
CHK
ADJ
WARNING
WARNING
2. Check:

tire surfaces
Damage / wear 
 Replace the tire.
Minimum tire tread depth
1.6 mm (0.06 in)
1Tire tread depth
2Sidewall
3Wear indicator

Do not use a tubeless tire on a wheel de-
signed only for tube tires to avoid tire fail-
ure and personal injury from sudden defla-
tion.

When using a tube tire, be sure to install the
correct tube.

Always replace a new tube tire and a new
tube as a set.

To avoid pinching the tube, make sure the
wheel rim...

3-60
CHECKING THE TIRES / CHECKING THE WHEELS
CHK
ADJ
WARNING
NOTE:
WARNING
NOTE: Front tire
Manufacturer
SizeModel
DUNLOP120 / 70ZR 17
M / C (58W)D218FL
MICHELIN120 / 70ZR 17
M / C (58W)Pilot
POWER C
Rear tire
Manufacturer
SizeModel
DUNLOP190 / 50ZR 17
M / C (73W)D218L
MICHELIN190 / 50ZR 17
M / C (73W)Pilot
POWER G
New tires have a relatively low grip on the
road surface until they have been slightly
worn. Therefore, approximately 100 km
should be traveled at normal speed before
any high-speed riding is...

3-61
CHECKING AND LUBRICATING THE CABLES /
LUBRICATING THE LEVERS AND PEDALS /
LUBRICATING THE SIDESTAND / LUBRICATING THE REAR SUSPENSIONCHK
ADJ
WARNING
NOTE:
EAS00170
CHECKING AND LUBRICATING THE 
CABLES
The following procedure applies to all of the in-
ner and outer cables.
Damaged outer cable may cause the cable to
corrode and interfere with its movement. Re-
place damaged outer cable and inner cables
as soon as possible.
1. Check:

outer cable
Damage 
 Replace.
2. Check:

cable operation
Rough...

3-62
CHECKING AND CHARGING THE BATTERY
CHK
ADJ
WARNING
CAUTION:
EAS00178
ELECTRICAL SYSTEM
CHECKING AND CHARGING THE BATTERY
Batteries generate explosive hydrogen gas
and contain electrolyte which is made of poi-
sonous and highly caustic sulfuric acid.
Therefore, always follow these preventive
measures:

Wear protective eye gear when handling or
working near batteries.

Charge batteries in a well-ventilated area.

Keep batteries away from fire, sparks or
open flames (e.g., welding equipment,
lighted...

3-63
Relationship between the open-circuit voltage
and the charging time at 20C
Open-circuit voltage (V)
These values vary with the temperature, the condition of
the battery plates, and the electrolyte level. 13.0
12.5
12.0
11.5
5 6.5 10
Charging time (hours)
Ambient
temperature
20C
Open-circuit voltage (V)
Charging condition of the battery (%)
CHECKING AND CHARGING THE BATTERY
CHK
ADJ
NOTE:
CAUTION:
NOTE:
Since MF batteries are sealed, it is not possible
to check the charge state of the battery by...