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Yamaha YD250 - generations and specs | MOTOVULKAN
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YD250
Yamaha · Model
— YD250
YD250
2 generations
1986 - 1989
·
Naked
FRAME · —
1986+
249cc · 20 hp · 1986
FRAME · 3NU
1989+
249cc · 20 hp · 1989
Yamaha YD250 1989
About generation 3NU
1989
Years
1989+
Frame codes
3NU
Class
Naked
Specifications
11 groups
General
2
Model code
3NU
Manufacturer
YAMAHA
Engine
19
Bore
75 mm
Cooling
Air-cooled
Power
20 hp
Fuel type
Regular (low-octane)
Power RPM
8,000 rpm
Stroke
56.5 mm
Cylinders
1
Torque RPM
6,500 rpm
Engine code
31G
Fuel system
Carburetor
Engine type
4-stroke
Torque (kgf·m)
1.8 kgf·m
Valvetrain
SOHC
Lubrication
Dry sump
Cylinder layout
Single cylinder
Displacement
249 cc
Fuel system model
BS34
Compression ratio
9.2
Valves per cylinder
2
Transmission
8
Type
Return shift
Gears
5
Clutch
Wet multi-plate
Shift type
Foot shift
Final drive
Chain
Gear ratios
2.642 / 1.684 / 1.26 / 1 / 0.821
Primary reduction
3.13
Secondary reduction
2.812
Chassis
18
Frame
Diamond
Rear tire
3.25-17
Front tire
3.00-17
Rear brake
Drum (leading-trailing)
Front brake
Hydraulic disc
Rear rim shape
MT
Rear rim width
2.15
Rear tire type
Tubeless
Front rim shape
MT
Front rim width
2.15
Front tire type
Tubeless
Rear shocks
2
Rear suspension
Swingarm
Front suspension
Telescopic fork
Rear ply rating
4PR
Front ply rating
4PR
Rear tire construction
Bias
Front tire construction
Bias
Dimensions
9
Trail
104 mm
Width
785 mm
Height
1,105 mm
Length
2,040 mm
Rake
27.5 °
Wheelbase
1,320 mm
Seat height
780 mm
Ground clearance
145 mm
Turning radius
2.2 m
Weight
2
Wet weight
146 kg
Seats
2
Capacities
2
Fuel tank
12 l
Engine oil (total)
1.7 l
Electrical
8
Battery
YB14L-A2
Starter
Electric & kick
Ignition
CDI
Spark plug
BPR7ES
Spark plugs
1
Battery capacity
12V-14Ah
Taillight rating
21W/5W
Headlight rating (high)
35W/35W
Instruments
3
Clock
Yes
Fuel gauge
Yes
Speedometer
Analog
Performance
3
Range
696 km
Measure standard
At 50 km/h
Fuel economy
1.7 L/100km
Equipment
1
Center stand
Yes
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