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8-87
WARNING
Battery electrolyte is poisonous and danger-
ous, causing severe burns, etc. It contains sul-
furic acid. Avoid contact with skin, eyes or
clothing.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of water or
milk. Follow with milk of magnesia, beaten egg
or vegetable oil. Call a physician immediately.
EYES: Flush with water for 15 minutes and get
prompt medical attention. Batteries produce
explosive gases. Keep sparks, flame, ciga-
rettes or other sources of ignition away. Venti-
late when charging or using in an enclosed
space. Always shield your eyes when working
near batteries. KEEP OUT OF REACH OF CHIL-
DREN.
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8-97 1. Headlight bulb holder assembly
1. Ensemble fixation d’ampoule de phare
1. Conjunto del portabombillas del faro
1. Do not touch the glass part of the bulb.
1. Ne pas toucher le verre de l’ampoule.
1. No tocar la parte de cristal de la bombilla.
3. Remove the headlight bulb holder assembly
by turning it counterclockwise.NOTE:_ The headlight bulb cannot be removed from the
headlight bulb holder. To replace the headlight
bulb, replace the headlight bulb holder assembly. _
WARNING
_ A headlight bulb is hot when it is on and imme-
diately after it is turned off. Wait for the bulb to
cool before touching or removing it. You can
be burned or a fire could start if the bulb touch-
es something flammable. _4. Install a new headlight bulb holder assembly
by inserting it and turning it clockwise.CAUTION:_ Do not touch the glass part of the headlight
bulb to keep it free from oil, otherwise the
transparency of the glass, the luminosity of the
bulb, and the bulb life will be adversely affect-
ed. Thoroughly clean off any dirt and finger-
prints on the headlight bulb using a cloth
moistened with alcohol or thinner. _
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9-7
EBU00427
B. STORAGE
Long term storage (60 days or more) of your ma-
chine will require some preventive procedures to
guard against deterioration. After thoroughly
cleaning the machine, prepare for storage as fol-
lows:
1. Fill the fuel tank with fresh fuel and add fuel
stabilizer (if available).NOTE:Use of fuel stabilizer eliminates the need to drain
the fuel system. Consult a Yamaha dealer if the
fuel system is to be drained instead.2. Remove the spark plug, pour about one ta-
blespoon of SAE 10W30 or 20W40 motor oil
in the spark plug hole and reinstall the spark
plug. Ground the spark plug wire and turn the
engine over several times to coat the cylinder
wall with oil.
3. Lubricate all control cables.
4. Block up the frame to raise all wheels off the
ground.
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9-9
5. Tie a plastic bag over the exhaust pipe outlet
to prevent moisture from entering.
6. If storing in a humid or salt-air atmosphere,
coat all exposed metal surfaces with a light
film of oil. Do not apply oil to any rubber parts
or the seat cover.
7. Remove the battery and charge it. Store it in
a dry place and recharge it once a month. Do
not store the battery in an excessively warm
or cold place (less than 0°C or more than
30°C).NOTE:Make any necessary repairs before storing the
machine.
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10-1
EBU00428
SPECIFICATIONS
Model YFM25BV
Dimension:
Overall length 1,916 mm
Overall width 1,038 mm
Overall height 1,118 mm
Seat height 772 mm
Wheelbase 1,170 mm
Minimum ground clearance 150 mm
Minimum turning radius 2,900 mm
Basic weight:
With oil and full fuel tank 216.0 kg
Noise and vibration level:
Noise level (77/311/EEC) (For Europe) 77.5 dB (A)
Vibration on seat (EN1032, ISO5008)
(For Europe) Will not exceed 0.5 (m/s
2)
Vibration on handlebar (EN1032, ISO5008)
(For Europe) Will not exceed 2.5 (m/s2)
Engine:
Type Air-cooled 4-stroke, SOHC
Cylinder arrangement Forward-inclined single cylinder
Displacement 229.6 cm
3
Bore
× stroke 71.0
× 58.0 mm
Compression ratio 8.70:1
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10-2
10
Starting system Electric starter and recoil starter
Lubrication system Wet sump
Engine oil:
Type
Recommended engine oil classification: API Service SE, SF, SG type or higher
Quantity:
Without oil filter element removal 1.50 L
With oil filter element removal 1.60 LModel YFM25BV
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
CAUTION:
In order to prevent clutch slippage (since the en-
gine 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.
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10-3
Final gear oil:
Type SAE 80 API GL-4 Hypoid gear oil
Quantity:
Periodic oil change 0.25 L
Air filter: Dry element
Fuel:
Type Unleaded gasoline only
For Europe: Regular unleaded gasoline only with
a research octane number of 91 or higher
Tank capacity 12.0 L
Reserve amount 1.6 L
Carburetor:
Ty p e
× quantity BSR33
× 1
Manufacturer MIKUNI
Spark plug:
Type / manufacturer DR7EA / NGK
Gap 0.6–0.7 mm
Clutch type: Wet, centrifugal automaticModel YFM25BV
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10-5
Brake:
Front brake type Dual disk brake
Operation Right hand operation
Rear brake type Drum brake
Operation Left hand and right foot operation
Suspension:
Fr on t S tr ut
Rear Swingarm (monocross)
Shock absorber:
Front Coil spring / oil damper
Rear Coil spring / oil damper
Wheel travel:
Front 125.0 mm
Rear 135.0 mm
Electrical:
Ignition system DC CDI
Generator system AC magneto
Battery type / voltage, capacity CB14A-A2/12 V 14.0 Ah
Headlight type: Halogen bulbModel YFM25BV
EE.book Page 5 Friday, May 27, 2005 5:00 PM