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INSTRUMENT AND CONTROL FUNCTIONS
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EAU01183
Fuel
Make sure there is sufficient fuel in
the tank. Fill the fuel tank to the
bottom of the filler tube as shown
in the illustration.
EW000130
w
Do not overfill the fuel tank. Avoid
spilling fuel on the hot engine. Do
not fill the fuel tank above the bot-
tom of the filler tube or it may
overflow when the fuel heats up
later and expands.
1. Filler tube
2. Fuel level
EAU00185
cC
Always wipe off spilled fuel imme-
diately with a dry and clean soft
cloth. Fuel may deteriorate painted
surfaces or plastic parts.
EAU00191
NOTE:
If knocking or pinging occurs, use a
different brand of gasoline or high-
er octane grade.
Recommended fuel:
Regular unleaded gasoline
with a research octane
number of 91 or higher.
Fuel tank capacity:
Total:
7.0 L
Reserve:
1.0 L
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EAU01038
SPECIFICATIONS
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Specifications
Model TW125
Dimensions
Overall length 2,140 mm
Overall width 810 mm
Overall height 1,120 mm
Seat height 805 mm
Wheelbase 1,330 mm
Ground clearance 260 mm
Minimum turning radius 2,100 mm
Basic weight (with oil and full
fuel tank)125 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
Be sure to use motor oils that do not contain anti-friction
modifiers. Passenger car motor oils (often labeled “Energy
Conserving”) contain anti-friction additives which will cause
clutch and/or starter clutch slippage, resulting in reduced
component life and poor engine performance.
Capacity
Periodic oil change 1.0 L
With oil filter replacement 1.1 L
Total amount 1.3 L
Air filterWet type element
–10° 0° 10° 20° 30°
40°
SAE 10W/30
SAE 10W/40
SAE 20W/40
SAE 20W/50
–20°
SAE 15W/40 50°C
5EK-9-E1 (TW125)<3.1> 4/6/0 11:50 PM Page 75
Fuel
Type Regular unleaded gasoline
Fuel tank capacity 7.0 L
Reserve amount 1.0 L
Carburetor
Type/quantity Y24P/1
Manufacturer TEIKEI
Spark plug
Manufacturer / Type NGK / DR8EA
Spark plug 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 50/14 (3.571)
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
Frame type Pressed and steel tube frame
Caster angle 26°
Trail 95 mm
Tires
Type With tube
Front
Size 130/80-18 66P
Manufacturer/ BRIDGESTONE / TW31
model
Rear
Size 180/80-14M/C 78P
Manufacturer/ BRIDGESTONE / TW34
model
Maximum load* 180 kg
Air pressure (cold tire)
up to 80 kg load*
SPECIFICATIONS
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