Yamaha · Model— YB-1 Four
YB-1 Four
1 generation2000 - 2005Naked
About generation BA-UA05J
2000-2005
- Years
- 2000 - 2005
- Frame codes
- BA-UA05J
- Class
- Naked
Specifications
10 groupsGeneral
3- Market
- Japanese domestic (JDM)
- Model code
- BA-UA05J
- Manufacturer
- YAMAHA
Engine
20- Bore
- 36 mm
- Cooling
- Air-cooled
- Power
- 4.1 hp
- Power (kW)
- 3 kW
- Fuel type
- Regular (low-octane)
- Power RPM
- 7,500 rpm
- Stroke
- 48.6 mm
- Torque
- 4 Nm
- Cylinders
- 1
- Torque RPM
- 6,000 rpm
- Fuel system
- Carburetor
- Engine type
- 4-stroke
- Torque (kgf·m)
- 0.41 kgf·m
- Valvetrain
- SOHC
- Lubrication
- Wet sump
- Cylinder layout
- Single cylinder
- Displacement
- 49 cc
- Fuel system model
- VM13SH
- Compression ratio
- 9.5
- Valves per cylinder
- 2
Transmission
12- Type
- Return shift
- Gears
- 4
- Clutch
- Wet multi-plate
- Chain size
- 420
- Shift type
- Foot shift
- Chain links
- 98
- Final drive
- Chain
- Gear ratios
- 3.25 / 1.812 / 1.315 / 1.045
- Rear sprocket
- 39
- Front sprocket
- 11
- Primary reduction
- 4.117
- Secondary reduction
- 3.545
Chassis
17- Frame
- Backbone
- Rear tire
- 2.50-17
- Front tire
- 2.25-17
- Rear brake
- Drum (leading-trailing)
- Front brake
- Drum (leading-trailing)
- Rear rim width
- 1.4
- Rear tire type
- Tube type
- Front rim width
- 1.2
- Front tire type
- Tube type
- Rear suspension
- Swingarm
- Front suspension
- Telescopic fork
- Rear load index
- 38
- Front load index
- 33
- Rear speed rating
- L
- Front speed rating
- L
- Rear tire construction
- Bias
- Front tire construction
- Bias
Dimensions
8- Trail
- 74 mm
- Width
- 655 mm
- Height
- 960 mm
- Length
- 1,785 mm
- Rake
- 26.5 °
- Wheelbase
- 1,190 mm
- Seat height
- 745 mm
- Ground clearance
- 130 mm
Weight
3- Dry weight
- 83 kg
- Wet weight
- 89 kg
- Seats
- 1
Capacities
5- Fuel tank
- 7.2 l
- Reserve
- 1.5 l
- Engine oil (total)
- 1 l
- Engine oil (change)
- 0.8 l
- Engine oil (with filter)
- 1 l
Electrical
7- Battery
- GT4B-5
- Starter
- Kick starter
- Spark plug
- CR7HSA
- Spark plugs
- 1
- Battery capacity
- 12V-2.5Ah
- Taillight rating
- 21W/5W
- Headlight rating (high)
- 35W/36.5W
Instruments
1- Speedometer
- Analog
Performance
3- Range
- 777.6 km
- Measure standard
- At 30 km/h
- Fuel economy
- 0.9 L/100km