Page 57 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
6
EAU46821
To change the coolant
1. Place the vehicle on a level sur-
face and let the engine cool if nec-
essary.
2. Remove cowling A and panel B.
(See page 6-7.)
3. Place a container under the engine
to collect the used coolant.
4. Remove the radiator cap retaining
bolt, radiator cap retainer and radi-
ator cap. WARNING! Never at-
tempt to remove the radiator
cap when the engine is hot.
[EWA10381]
5. Remove the coolant reservoir
breather hose from the guide, and
then remove the coolant reservoir
cap.
6. Remove the coolant reservoir cov-
er and coolant reservoir by remov-
ing the bolts.7. Drain the coolant from the coolant
reservoir by turning it upside down.
8. Remove the coolant drain bolt to
drain the cooling system.
1. Radiator cap
2. Radiator cap retaining bolt
3. Radiator cap retainer
2 2
1 1
3 3
1. Coolant reservoir cap
2. Coolant reservoir breather hose
3. Guide
3
1
2
1. Bolt
2. Coolant reservoir cover
1. Coolant drain bolt
2 1
1
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Page 58 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-15
69. After the coolant is completely
drained, thoroughly flush the cool-
ing system with clean tap water.
10. Install the coolant drain bolt, and
then tighten it to the specified
torque.
TIPCheck the washer for damage and re-place it if necessary.
11. Install the coolant reservoir and its
reservoir cover by placing them in
the original position, and then in-
stalling the bolts.
12. Pour the specified amount of the
recommended coolant into the ra-
diator and reservoir.13. Install the radiator cap.
14. Install the coolant reservoir cap.
15. Start the engine, let it idle for sev-
eral minutes, and then turn it off.
16. Remove the radiator cap to check
the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the top of the radia-
tor, and then install the radiator
cap, radiator cap retainer and radi-
ator cap retaining bolt.17. Check the coolant level in the res-
ervoir. If necessary, remove the
coolant reservoir cap, add coolant
to the maximum level mark, and
then install the cap.
18. Route the coolant reservoir breath-
er hose through the guide as
shown.Tightening torque:
Coolant drain bolt:
10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Antifreeze/water mixture ratio:
1:1
Recommended antifreeze:
High-quality ethylene glycol anti-
freeze containing corrosion inhibitors
for aluminum engines
Coolant quantity:
Radiator capacity (including all
routes):
2.00 L (2.11 US qt, 1.76 Imp.qt)
Coolant reservoir capacity (up to the
maximum level mark):
0.25 L (0.26 US qt, 0.22 Imp.qt)
1. Radiator cap
2. Radiator cap retaining bolt
3. Radiator cap retainer
2 13
2
1
3
U20SE0E0.book Page 15 Friday, September 19, 2008 9:27 AM
Page 59 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
6 19. Start the engine, and then check
the vehicle for coolant leakage. If
coolant is leaking, have a Yamaha
dealer check the cooling system.
20. Install the cowling and the panel.
EAU34425
Replacing the air filter element The air filter element should be re-
placed at the intervals specified in the
periodic maintenance and lubrication
chart. Replace the air filter element
more frequently if you are riding in un-
usually wet or dusty areas.
1. Remove the seat. (See page
3-17.)
2. Remove the fuel tank bolts, and
then lift the fuel tank away from the
air filter case.
3. Remove the air filter case cover by
removing the screws. NOTICE:
When removing the air filtercase cover, be careful not to al-
low foreign objects to drop into
the air intake manifold.
[ECA12881]
4. Pull the air filter element out.
1. Coolant reservoir breather hose
2. Guide
2 1
1. Bolt
1
1. Air filter case cover
2. Screw
1. Air filter element
2. Air intake manifold
12
2
2
2 1
U20SE0E0.book Page 16 Friday, September 19, 2008 9:27 AM
Page 60 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
65. Insert a new air filter element into
the air filter case. NOTICE: Make
sure that the air filter element is
properly seated in the air filter
case. The engine should never
be operated without the air filter
element installed, otherwise the
piston(s) and/or cylinder(s) may
become excessively worn.
[ECA10481]
6. Install the air filter case cover by in-
stalling the screws.
7. Place the fuel tank in its original
position. Make sure that the fuel
hoses are properly connected and
routed, and are not pinched. Be
sure to place the hoses in their
original position. WARNING! Be-
fore placing the fuel tank in the
original position, make sure that
all hoses (i.e., fuel hose, fuel
tank breather hose, fuel tank
overflow hose) are not dam-
aged, that they are properly con-
nected and routed, and that they
are not pinched. If any hose is
damaged, have a Yamaha dealer
replace the hose before startingthe engine, otherwise fuel may
leak, creating a fire hazard.
[EWA12463]
8. Install the fuel tank bolts.
9. Install the seat.
EAU34301
Adjusting the engine idling
speed The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
The engine should be warm before
making this adjustment.
Check the engine idling speed and, if
necessary, adjust it to specification by
turning the idle adjusting screw. To in-
crease the engine idling speed, turn the
screw in direction (a). To decrease the
engine idling speed, turn the screw in
direction (b).
1. Hose
1. Original position (paint mark)
1
1
1. Idle adjusting screw
1
1 (a)
(b)
U20SE0E0.book Page 17 Friday, September 19, 2008 9:27 AM
Page 61 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-18
6
TIPIf the specified idling speed cannot be
obtained as described above, have aYamaha dealer make the adjustment.
EAU21382
Checking the throttle cable
free play The throttle cable free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
throttle grip. Periodically check the
throttle cable free play and, if neces-
sary, have a Yamaha dealer adjust it.
EAU21401
Valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
Engine idling speed:
1250–1350 r/min
1. Throttle cable free play
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Page 62 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
6
EAU21772
Tires To maximize the performance, durabil-
ity, and safe operation of your motor-
cycle, note the following points
regarding the specified tires.
Tire air pressure
The tire air pressure should be checked
and, if necessary, adjusted before each
ride.
WARNING
EWA10501
Operation of this vehicle with im-
proper tire pressure may cause se-
vere injury or death from loss of
control.
The tire air pressure must be
checked and adjusted on cold
tires (i.e., when the temperature
of the tires equals the ambient
temperature).
The tire air pressure must be ad-
justed in accordance with the
riding speed and with the total
weight of rider, passenger, car-
go, and accessories approvedfor this model.
WARNING
EWA10511
Never overload your vehicle. Opera-
tion of an overloaded vehicle couldcause an accident.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 sidewall is
cracked, have a Yamaha dealer re-
place the tire immediately.
TIPThe tire tread depth limits may differ
from country to country. Always complywith the local regulations.
Tire air pressure (measured on cold
tires):
0–90 kg (0–198 lb):
Front:
225 kPa (2.25 kgf/cm², 33 psi)
Rear:
250 kPa (2.50 kgf/cm², 36 psi)
90–195 kg (198–430 lb):
Front:
250 kPa (2.50 kgf/cm², 36 psi)
Rear:
290 kPa (2.90 kgf/cm², 42 psi)
High-speed riding:
Front:
225 kPa (2.25 kgf/cm², 33 psi)
Rear:
250 kPa (2.50 kgf/cm², 36 psi)
Maximum load*:
195 kg (430 lb)
* Total weight of rider, passenger, car-
go and accessories
1. Tire sidewall
2. Tire tread depthMinimum tire tread depth (front and
rear):
1.6 mm (0.06 in)
U20SE0E0.book Page 19 Friday, September 19, 2008 9:27 AM
Page 63 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
6
WARNING
EWA10470
Have a Yamaha dealer replace
excessively worn tires. Besides
being illegal, operating the vehi-
cle with excessively worn tires
decreases riding stability 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 informationThis motorcycle is equipped with cast
wheels and tubeless tires with valves.
WARNING
EWA10481
The front and rear tires should
be of the same make and de-
sign, otherwise the handling
characteristics of the motor-
cycle may be different, which
could lead to an accident.
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 ahigh-speed ride.
After extensive tests, only the tires list-
ed below have been approved for this
model by Yamaha Motor Co., Ltd.
WARNING
EWA10600
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
1. Tire air valve
2. Tire air valve core
3. Tire air valve cap with seal
Front tire:
Size:
120/70 ZR17M/C (58W)
Manufacturer/model:
BRIDGESTONE/BT021
DUNLOP/ROADSMART
Rear tire:
Size:
160/60 ZR17M/C (69W)
Manufacturer/model:
BRIDGESTONE/BT021
DUNLOP/ROADSMART
FRONT and REAR:
Tire air valve:
TR412
Va l ve c o r e :
#9100 (original)
U20SE0E0.book Page 20 Friday, September 19, 2008 9:27 AM
Page 64 of 100
PERIODIC MAINTENANCE AND ADJUSTMENT
6-21
6“broken in”. Therefore, it is ad-
visable before doing any high-
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.
EAU46730
Adjusting the clutch lever free
play The clutch lever free play should mea-
sure 10.0–15.0 mm (0.39–0.59 in) as
shown. Periodically check the clutch le-
ver free play and, if necessary, adjust it
as follows.
To increase the clutch lever free play,
turn the clutch lever free play adjusting
bolt at the clutch lever in direction (a).
To decrease the clutch lever free play,
turn the adjusting bolt in direction (b).1. Clutch lever free play adjusting bolt
2. Clutch lever free play
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