Page 44 of 74

PERIODIC MAINTENANCE AND ADJUSTMENT
6-10
6
TIPThe engine oil should be between the
tip of the dipstick and maximum level
mark.4. If the engine oil is not between the
tip of the dipstick and the maxi-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
5. Insert the engine oil dipstick into
the oil filler hole, and then tighten
the oil filler cap.To change the engine oil
1. Place the vehicle on the center-
stand.
2. Start the engine, warm it up for
several minutes, and then turn it
off.
3. Place an oil pan under the engine
to collect the used oil.
4. Remove the engine oil filler cap,
and then remove the engine oil
drain bolt and its gasket to drain
the oil from the crankcase.
5. Install the engine oil drain bolt and
its new gasket, and then tighten
the bolt to the specified torque.6. Refill with the specified amount of
the recommended engine oil, and
then install and tighten the engine
oil filler cap.
NOTICE
ECA11670
Do not use oils with a diesel
specification of “CD” or oils of a
higher quality than specified. In
addition, do not use oils labeled
“ENERGY CONSERVING II” or
higher.
Be sure no foreign material en-
ters the crankcase.
7. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking, im-
mediately turn the engine off and
check for the cause.
1. Engine oil filler cap
2. Engine oil dipstick
3. Maximum level mark
4. Tip of the engine oil dipstick
32
1 4
1. Engine oil drain bolt
2. Gasket
1 1
2
Tightening torque:
Engine oil drain bolt
20 Nm (2.0 m·kgf, 14 ft·lbf)
Recommended engine oil:
See page 8-1.
Oil quantity:
1.00 L (1.06 US qt, 0.88 Imp.qt)
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Page 48 of 74
PERIODIC MAINTENANCE AND ADJUSTMENT
6-14
6
5. Apply oil of the recommended type
to the entire surface of the sponge
material, and then squeeze the ex-
cess oil out.
TIPThe air filter element should be wet but
not dripping.
6. Insert the element into the V-belt
case.
7. Install the air filter element holder
by installing the screw.
8. Install the air filter element cover
by installing the screws.
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.
1. V-belt case air filter element
1
Recommended oil:
Yamaha foam air filter oil or other
quality foam air filter oil
1. Throttle cable free play1ZAUM0051
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Page 53 of 74

PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
6
EAU37001
Checking the front brake fluid
level Insufficient brake fluid may allow air to
enter the brake system, possibly caus-
ing it to become ineffective.
Before riding, check that the brake fluid
is above the minimum level mark and
replenish if necessary. A low brake fluid
level may indicate worn brake pads
and/or brake system leakage. If the
brake fluid level is low, be sure to check
the brake pads for wear and the brake
system for leakage.
Observe these precautions:
When checking the fluid level,
make sure that the top of the mas-
ter cylinder is level by turning the
handlebars.
Use only the recommended quality
brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking perfor-
mance.
TIPIf DOT 4 is not available, DOT 3 can be
used.
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performance.
Be careful that water does not en-
ter the master cylinder when refill-
ing. Water will significantly lower
the boiling point of the fluid and
may result in vapor lock.
Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.
As the brake pads wear, it is nor-
mal for the brake fluid level to grad-
ually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
1. Minimum level mark
1
Recommended brake fluid:
DOT 4
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Page 68 of 74

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
1860 mm (73.2 in)
Overall width:
670 mm (26.4 in)
Overall height:
1045 mm (41.1 in)
Seat height:
730 mm (28.7 in)
Wheelbase:
1250 mm (49.2 in)
Ground clearance:
95 mm (3.74 in)
Minimum turning radius:
1900 mm (74.8 in)Weight:With oil and fuel:
110.0 kg (243 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
125 cm³
Bore × stroke:
51.5 × 60.0 mm (2.03 × 2.36 in)
Compression ratio:
9.50 :1
Starting system:
Electric starter
Lubrication system:
Wet sump
Engine oil:Recommended brand:
YAMALUBE
Type:
SAE 10W-30, 10W-40, 10W-50, 15W-40,
20W-40 or 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard MA
Engine oil quantity:
Periodic oil change:
1.00 L (1.06 US qt, 0.88 Imp.qt)Final transmission oil:Type:
SAE 85W-140(GL5)
Quantity:
0.13 L (0.14 US qt, 0.11 Imp.qt)Air filter:Air filter element:
Oil-coated paper element
Fuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
5.5 L (1.45 US gal, 1.21 Imp.gal)Fuel injection:Throttle body:
ID mark:
4P72 00Spark plug (s):Manufacturer/model:
NGK/CR7E
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)Clutch:Clutch type:
Dry, centrifugal automaticTransmission:Primary reduction system:
Helical gear
Primary reduction ratio:
40/15 (2.667)
Secondary reduction system:
Spur gear
Secondary reduction ratio:
38/13 (2.923)
Transmission type:
V-belt automatic
Operation:
Centrifugal automatic typeChassis:Frame type:
Steel tube backbone
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
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Page 69 of 74

SPECIFICATIONS
8-2
8
Caster angle:
27.00 °
Trail:
75.0 mm (2.95 in)Front tire:Type:
Tubeless
Size:
100/90-10 56J
Manufacturer/model:
CHENG SHIN/C-922Rear tire:Type:
Tubeless
Size:
100/90-10 56J
Manufacturer/model:
CHENG SHIN/C-940Loading:Maximum load:
167 kg (368 lb)
(Total weight of rider, passenger, cargo and
accessories)Tire air pressure (measured on cold
tires):Loading condition:
0–83 kg (0–183 lb)
Front:
175 kPa (1.75 kgf/cm², 25 psi)
Rear:
200 kPa (2.00 kgf/cm², 29 psi)
Loading condition:
83–167 kg (183–368 lb)Front:
175 kPa (1.75 kgf/cm², 25 psi)
Rear:
250 kPa (2.50 kgf/cm², 36 psi)
Front wheel:Wheel type:
Cast wheel
Rim size:
J10 x 2.15Rear wheel:Wheel type:
Cast wheel
Rim size:
J10 x MT2.50Front brake:Type:
Single disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 3 or 4Rear brake:Type:
Drum brake
Operation:
Left hand operationFront suspension:Type:
Telescopic fork
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
80.0 mm (3.15 in)
Rear suspension:Type:
Unit swing
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
65.0 mm (2.56 in)Electrical system:Ignition system:
TCI (digital)
Charging system:
AC magnetoBattery:Model:
GTX7A-BS/YTX7A-BS
Voltage, capacity:
12 V, 6.0 AhHeadlight:Bulb type:
Halogen bulbBulb voltage, wattage × quantity:Headlight:
12 V, 35 W/35 W × 1
Tail/brake light:
12 V, 5.0 W/21.0 W × 1
Front turn signal light:
12 V, 10.0 W × 2
Rear turn signal light:
12 V, 16.0 W × 2
Meter lighting:
12 V, 3.4 W × 2
High beam indicator light:
12 V, 1.7 W × 1
U4P7E2E0.book Page 2 Thursday, August 20, 2009 9:44 AM