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EBU00428
SPECIFICATIONS
Model YFM250X
Dimension:
Overall length 1,940 mm
Overall width 1,080 mm
Overall height 1,118 mm
Seat height 780 mm
Wheelbase 1,170 mm
Minimum ground clearance 150 mm
Minimum turning radius 2,900 mm
Basic weight:
With oil and full fuel tank 213 kg
Noise and vibration level:
Noise level (71/311/EEC) (For Europe) 75.3 dB (A)
Vibration on seat (EN1032, ISO5008)
(For Europe) Not exceed 0.5 (m/s
2)
Vibration on handlebar (EN1032, ISO5008)
(For Europe) 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
× 58 mm
Compression ratio 8.7:1
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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 1.5 L
With oil filter element removal 1.6 LModel YFM250X
-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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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 L
Reserve amount 1.6 L
Carburetor:
Ty p e
× quantity BST34
× 1
Manufacturer MIKUNI
Spark plug:
Type / manufacturer DR7EA / NGK
Gap 0.6–0.7 mm
Clutch type: Wet, centrifugal automaticModel YFM250X
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Brake:
Front brake type Dual disk
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 mm
Rear 135 mm
Electrical:
Ignition system DC, C.D.I.
Generator system A.C. magneto
Battery type / voltage, capacity YB14A-A2/12 V, 14 Ah
Headlight type: IncandescenceModel YFM250X
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