YAMAHA TW125 2003 Manual Online

8-1
EAU01038
SPECIFICATIONS
8
SpecificationsSpecifications
Model TW125
Dimensions
Overall length 2,135 mm
Overall width 820 mm
Overall height 1,120 mm
Seat height 820 mm
Wheelbase 1,350 mm
Ground clearance 255 mm
Minimum turning radius 2,100 mm
Basic weight (with oil and full
fuel tank)127 kg
Engine
Engine type Air-cooled 4-stroke, SOHC
Cylinder arrangement Forward inclined
single cylinder
Displacement 124 cm
3
Bore ×Stroke 57.0 ×48.8 mm
Compression ratio 10:1
Starting system Electric starter
Lubrication system Wet sumpEngine oil
Type
Recommended engine oil
classification API Service SE, SF, SG type
or higher
cC
In order to prevent clutch slippage (since the engine oil also
lubricates the clutch), do not mix any chemical additives. 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.
Capacity
Without oil filter element
removal 1.0 L
With oil filter element removal 1.1 L
Total amount (dry engine) 1.3 L
–10° 0° 10° 20° 30°
40°
SAE 10W/30
SAE 10W/40
SAE 20W/40
SAE 20W/50
–20°
SAE 15W/40 50°C
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8-2
SPECIFICATIONS
8
Air filterWet type element
Fuel
Type REGULAR UNLEADED
GASOLINE ONLY
Fuel tank capacity 7.0 L
Reserve amount 1.7 L
Carburetor
Manufacturer TEIKEI
Model ×quantity MV28 ×1
Spark plug
Manufacturer/Type NGK/DR8EA
Gap 0.6–0.7 mm
Clutch typeWet, multiple-disc
Transmission
Primary reduction system Spur gear
Primary reduction ratio 74/20 (3.700)
Secondary reduction system Chain drive
Secondary reduction ratio 3.643
Number of drive chain
sprocket teeth (rear/front) 51/14
Transmission type Constant mesh 5-speed
Operation Left foot operationGear ratio 1st 2.250
2nd 1.476
3rd 1.125
4th 0.926
5th 0.793
Chassis
Frame type Diamond
Caster angle 25.83°
Trail 93 mm
Tires
Front
Type With tube
Size 130/80-18 M/C 66P
Manufacturer/ BRIDGESTONE/TW-203
model
Rear
Type With tube
Size 180/80-14 M/C 78P
Manufacturer/ BRIDGESTONE/TW-204
model
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8-3
SPECIFICATIONS
8
Maximum load* 180 kg
Air pressure (cold tire)
up to 90 kg load*
Front
150 kPa (1.50 kgf/cm2, 1.50 bar)
Rear150 kPa (1.50 kgf/cm2, 1.50 bar)
90 kg load–Maximum
load*
Front
150 kPa (1.50 kgf/cm2, 1.50 bar)
Rear175 kPa (1.75 kgf/cm2, 1.75 bar)
*Total weight of rider, passenger, cargo and accessories
Wheels
Front
Type Spoke wheel
Size 18 ×2.50
Rear
Type Spoke wheel
Size 14M/C ×MT4.50Brakes
Front
Type Single disc brake
Operation Right hand
Fluid DOT 4
Rear
Type Drum brake
Operation Right foot
Suspension
Front
Type Telescopic fork
Rear
Type Swingarm (Monocross
suspension)
Spring/shock absorber
Front Coil spring/oil damper
Rear Coil spring/gas-oil damper
Wheel travel
Front 150 mm
Rear 150 mm
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8-4
SPECIFICATIONS
8
Electrical
Ignition system C.D.I.
Charging system
Type A.C. magneto
Standard output 14 V, 170W @ 5,000 r/min
Battery
Type GT6B-3
Voltage, capacity 12 V, 6 Ah
Headlight bulb typeHalogen bulb
Bulb voltage, wattage ×quantity
Headlight 12 V, 60/55 W ×1
Tail/brake light 12 V, 5/21 W ×1
Front turn signal light 12 V, 21 W ×2
Rear turn signal light 12 V, 21 W ×2
Auxiliary light 12 V, 4 W ×1
Meter lighting 12 V, 3.4 W ×1
Neutral indicator light 12 V, 3.4 W ×1
High beam indicator light 12 V, 3.4 W ×1
Turn signal indicator light 12 V, 3.4 W ×1
Fuse20 A
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8-5
SPECIFICATIONS
8
All specification data in this manual are listed in SI and
METRIC UNITS.
Use this table to convert METRIC unit values to IMPERIAL
unit values.
Example:
METRIC VALUE CONVERSION
FACTORIMPERIAL VALUE
2 mm× 0.03937 = 0.08 in
Conversion table
METRIC SYSTEM TO IMPERIAL SYSTEM
Metric unit Conversion factor Imperial unit
Torquem·kgf
m·kgf
cm·kgf
cm·kgf
× 7.233× 86.794× 0.0723× 0.8679ft·lbf
in·lbf
ft·lbf
in·lbf
Weightkg
g
× 2.205× 0.03527lb
oz
Speed km/h
× 0.6214 mi/h
Distancekm
m
m
cm
mm
× 0.6214× 3.281× 1.094× 0.3937× 0.03937mi
ft
yd
in
in
Volume,
Capacitycc (cm3)
cc (cm3)
L (liter)
L (liter)× 0.03527× 0.06102× 0.8799× 0.2199oz (IMP liq.)
cu·in
qt (IMP liq.)
gal (IMP liq.)
Miscellaneouskg/mm
kgf/cm
2
°C
× 55.997× 14.2234× 1.8 + 32 lb/in
psi (lbf/in
2)
°F
EAU04513
Conversion table
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9-1
EAU01039
CONSUMER INFORMATION
9
EAU02944
Identification numbers
Record the key identification number,
vehicle identification number and
model label information in the spaces
provided below for assistance when
ordering spare parts from a Yamaha
dealer or for reference in case the
vehicle is stolen.
1. KEY IDENTIFICATION
NUMBER:
2. VEHICLE IDENTIFICATION
NUMBER:
3. MODEL LABEL INFORMATION:
EAU01043
Vehicle identification number
The vehicle identification number is
stamped into the steering head pipe.
Record this number in the space pro-
vided.
NOTE:
The vehicle identification number is
used to identify your motorcycle and
may be used to register your motor-
cycle with the licensing authority in
your area.
1
1. Vehicle identification number
EAU01042
Key identification number
The key identification number is
stamped into the key.
Record this number in the space pro-
vided and use it for reference when
ordering a new key.
1
1. Key identification number
1
6
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9-2
CONSUMER INFORMATION
9
EAU03757
Model label
The model label is affixed to the loca-
tion shown. Record the information
on this label in the space provided.
This information will be needed when
ordering spare parts from a Yamaha
dealer.
1
1. Model label
5RS-9-E1 (TW125) 8/23/02 11:37 AM Page 86

PRINTED ON RECYCLED PAPER
YAMAHA MOTOR CO., LTD.
OWNER’S MANUAL
5RS-28199-E1
TW125
PRINTED IN JAPAN
2002·9–0.3×1
(E)!