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Periodic maintenance an d a djustment
6-14
6
3. If the coolant is at or below the mi-
nimum level mark, remove the res-
ervoir cap. WARNING! Remove
only the coolant reservoir cap.
Never attempt to remove the ra-
d iator cap when the en gine is
hot.
[EWA15162]
4. Add coolant to the maximum level mark, and then install the reservoir
cap. NOTICE: If coolant is not
availa ble, use distille d water or
soft tap water instead . Do not
use har d water or salt water
since it is harmful to the en gine.
If water has been used instead
of coolant, replace it with cool-
ant as soon as possi ble, other-
wise the coolin g system will not
b e protecte d a gainst frost an d
corrosion. If water has b een
a dd ed to the coolant, have a
Yamaha dealer check the anti-
freeze content of the coolant as soon as possi
ble, otherwise the
effectiveness of the coolant will
b e re duce d.
[ECA10473]
EAU59863
To change the coolant
1. Place the vehicle on a level surfa- ce and let the engine cool if neces-
sary.
2. Place a container under the en- gine to collect the used coolant.
3. Remove the radiator cap retaining bolt and radiator cap. WARNING!
Never attempt to remove the ra-
d iator cap when the en gine is
hot.
[EWA10382]
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
123
1. Coolant reservoir cap
1
Coolant reservoir capacity (up to
the maximum level mark): 0.25 L (0.26 US qt, 0.22 Imp.qt)
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Periodic maintenance an d a djustment
6-15
6 4. Remove the coolant reservoir cov-
er by removing the bolt and quick
fastener, and then remove the
coolant reservoir. 5. Remove the coolant reservoir cap.
6. Drain the coolant from the coolant
reservoir by turning it upside
down.
7. Install the coolant reservoir and its cover by placing them in the origi-
nal position, and then installing the
bolt and quick fastener. 8. Remove the coolant drain bolt and
its gasket to drain the coolant from
the cooling system.
9. After the coolant is completely drained, thoroughly flush the cool-
ing system with clean tap water.
10. Install the coolant drain bolt and its new gasket, and then tighten
the bolt to the specified torque.
11. Pour the specified amount of the recommended coolant into the ra-
diator and reservoir.
1. Radiator cap
2. Radiator cap retaining bolt
1. Coolant reservoir cover
2. Bolt
3. Quick fastener
2
1
2
1
3
1. Coolant reservoir cap
2. Coolant reservoir
21
1. Coolant drain bolt
2. GasketTightenin g torque:
Coolant drain bolt: 7 N·m (0.7 kgf·m, 5.1 lb·ft)
12
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Periodic maintenance an d a djustment
6-16
6
12. Install the coolant reservoir cap.
13. Install the radiator cap.
14. Start the engine, let it idle for sev-
eral minutes, and then turn it off.
15. Remove the radiator cap to check the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the top of the radi-
ator, and then install the radiator
cap and radiator cap retaining
bolt.
16. 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. 17. Start the engine, and then check
the vehicle for coolant leakage. If
coolant is leaking, have a Yamaha
dealer check the cooling system.
EAU60451
Replacin g the air filter ele-
ment an d cleaning the check
hoseThe air filter element should be re-
placed at the intervals specified in the
periodic maintenance and lubrication
chart. Have a Yamaha dealer replace
the air filter element more frequently if
you are riding in unusually wet or dusty
areas. However, the air filter check
hose can be easily reached and should
be frequently checked and cleaned if
necessary.
To clean the air filter check hose
1. Remove the air filter check hose under the air filter case.
Antifreeze/water mixture ratio:1:1
Recommen ded antifreeze:
High-quality ethylene glycol anti-
freeze containing corrosion inhibi-
tors for aluminum engines
Coolant quantity:
Radiator (including all routes):1.60 L (1.69 US qt, 1.41 Imp.qt)
Coolant reservoir (up to the maxi-
mum level mark): 0.25 L (0.26 US qt, 0.22 Imp.qt)
1. Air filter check hose
1
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Periodic maintenance an d a djustment
6-40
6
En
gine overheatin g
WARNING
EWA10401
Do not remove the ra diator cap when the en gine an d ra diator are hot. Scal din g hot flui d an d steam may be
b lown out un der pressure, which coul d cause serious injury. Be sure to wait until the en gine has coole d.
After removin g the ra diator cap retainin g b olt, place a thick ra g, like a towel, over the ra diator cap, an d then
slowly rotate the cap counterclockwise to the detent to allow any resid ual pressure to escape. When the hiss-
in g soun d has stopped , press down on the cap while turnin g it counterclockwise, an d then remove the cap.TIPIf coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended cool-
ant as soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See TIP.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
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Page 94 of 102

Specifications
8-1
8
Dimensions:Overall length:2085 mm (82.1 in)
Overall width:
745 mm (29.3 in)
Overall height: 1090 mm (42.9 in)
Seat height: 805 mm (31.7 in)
Wheelbase:
1400 mm (55.1 in)
Ground clearance: 140 mm (5.51 in)
Minimum turning radius: 2.7 m (8.86 ft)Wei ght:Curb weight:
182 kg (401 lb)Engine:Combustion cycle:
4-stroke
Cooling system: Liquid cooled
Valve train: DOHC
Cylinder arrangement:
Inline
Number of cylinders: 2-cylinder
Displacement: 689 cm³
Bore × stroke:
80.0 × 68.6 mm (3.15 × 2.70 in) Compression ratio:
11.5 : 1
Starting system: Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
SAE viscosity grades:
10W-40
Recommended engine oil grade: API service SG type or higher, JASO
standard MA
Engine oil quantity: Oil change:
2.30 L (2.43 US qt, 2.02 Imp.qt)
With oil filter removal: 2.60 L (2.75 US qt, 2.29 Imp.qt)Coolant quantity:Coolant reservoir (up to the maximum level
mark):0.25 L (0.26 US qt, 0.22 Imp.qt)
Radiator (including all routes):
1.60 L (1.69 US qt, 1.41 Imp.qt)Air filter:Air filter element:Oil-coated paper elementFuel:Recommended fuel:Regular unleaded gasoline (Gasohol [E10]
acceptable)
Fuel tank capacity: 14 L (3.7 US gal, 3.1 Imp.gal) Fuel reserve amount:
2.7 L (0.71 US gal, 0.59 Imp.gal)
Fuel injection:Throttle body:
ID mark: 1WS1 10Spark plu g(s):Manufacturer/model:
NGK/LMAR8A-9
Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)Clutch:Clutch type:Wet, multiple-discDrivetrain:Primary reduction ratio:
1.925 (77/40)
Final drive: Chain
Secondary reduction ratio: 2.688 (43/16)
Transmission type:
Constant mesh 6-speed
Gear ratio: 1st:
2.846 (37/13)
2nd: 2.125 (34/16)
3rd: 1.632 (31/19)
4th:
1.300 (26/20)
5th: 1.091 (24/22)
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