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Yamaha BWs - 2012 Specifications and Reviews

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Engine and Transmission Specifications

Transmission type,final driveBelt
GearboxAutomatic
Cooling systemAir
Lubrication systemSeparate lubrication
IgnitionCDI
Fuel systemCarburettor. Gurtner
Bore x stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Compression7.2:1
Torque3.60 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000
Power3.22
Engine typeSingle cylinder, two-stroke
Capacity:49.20 ccm (3.00 cubic inches)
 
 

CategoryScooter
Year2012
ModelYamaha BWs
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter110 mm (4.3 inches)
Rear brakesExpanding brake (drum brake)
Front brakes diameter180 mm (7.1 inches)
Front brakesSingle disc
Rear tyre dimensions150/80-10
Front tyre dimensions120/90-10
Rear suspension travel70 mm (2.8 inches)
Rear suspensionUnit swing
Front suspension travel70 mm (2.8 inches)
Front suspensionTelescopic fork

Physical measures and capacities

Fuel capacity5.30 litres (1.40 gallons)
Wheelbase1,172 mm (46.1 inches)
Ground clearance124 mm (4.9 inches)
Overall width675 mm (26.6 inches)
Overall length1,685 mm (66.3 inches)
Overall height1,049 mm (41.3 inches)
Seat height768 mm (30.2 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc82.0 kg (180.8 pounds)

Other specs

Factory warranty6 Month (Limited Factory Warranty)
LightDual 30W Krypton multireflector headlights and 21/5W brakelight
InstrumentsSpeedometer, odometer and fuel gauge
Wheelbase1,229 mm (48.4 inches)
Rear tyre25/10-12
Front tyre25/8-12
Rear wheel travel193 mm (7.6 inches)
Rear SuspensionIndependent double wishbone
Front wheel travel147 mm (5.8 inches)
Front SuspensionIndependent double wishbone
DrivelineYamaha On-Command pushbutton; 3-way locking differential; 2WD, 4WD, locked 4WD; shaft drive
Fuel controlSingle Overhead Cams (SOHC)
Bore x Stroke83.0 x 71.5 mm (3.3 x 2.8 inches)
Compression8.6:1
ModelYamaha Big Bear 400 4x4 IRS
Color optionsBlack, white, red
StarterElectric & kick

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