Yamaha XJ400 - generations and specs | MOTOVULKAN

Yamaha · Model— XJ400

XJ400

2 generations1980 - 1982Naked

Yamaha XJ400 1981

About generation 4GD

1981

Years: 1981+
Frame codes: 4GD
Class: Naked

Specifications

9 groups

General

3

Market: Japanese domestic (JDM)
Model code: 4GD
Manufacturer: YAMAHA

Engine

19

Bore: 51 mm
Cooling: Air-cooled
Power: 52 hp
Fuel type: Regular (low-octane)
Power RPM: 10,000 rpm
Stroke: 48.8 mm
Cylinders: 4
Torque RPM: 8,000 rpm
Engine code: 4GO
Fuel system: Carburetor
Engine type: 4-stroke
Torque (kgf·m): 3.5 kgf·m
Valvetrain: DOHC
Lubrication: Wet sump
Cylinder layout: Inline
Displacement: 398 cc
Fuel system model: BS28
Compression ratio: 9.5
Valves per cylinder: 2

Transmission

8

Type: Return shift
Gears: 6
Clutch: Wet multi-plate
Shift type: Foot shift
Final drive: Chain
Gear ratios: 2.733 / 1.947 / 1.545 / 1.24 / 1.035 / 0.9
Primary reduction: 2.849
Secondary reduction: 2.875

Chassis

20

Frame: Double cradle
Rear tire: 110/90-18
Front tire: 3.00-19
Rear brake: Drum (leading-trailing)
Front brake: Hydraulic dual disc
Rear rim shape: MT
Rear rim width: 2.15
Rear tire type: Tubeless
Front fork type: Conventional
Front rim shape: MT
Front rim width: 1.85
Front tire type: Tubeless
Rear shocks: 2
Rear suspension: Swingarm
Front suspension: Telescopic fork
Rear load index: 61
Front ply rating: 4PR
Rear speed rating: S
Rear tire construction: Bias
Front tire construction: Bias

Dimensions

9

Trail: 109 mm
Width: 760 mm
Height: 1,130 mm
Length: 2,060 mm
Rake: 27 °
Wheelbase: 1,405 mm
Seat height: 780 mm
Ground clearance: 150 mm
Turning radius: 2.3 m

Weight

2

Wet weight: 193 kg
Seats: 2

Capacities

2

Fuel tank: 16 l
Engine oil (total): 2.9 l

Electrical

8

Battery: YB12A-A
Starter: Electric starter
Ignition: Transistorized (TCI)
Spark plug: D8EA
Spark plugs: 4
Battery capacity: 12V-12Ah
Taillight rating: 27W/8W
Headlight rating (high): 50W/40W

Performance

5

Range: 672 km
Rear tire pressure: 2.25 kgf/cm²
Front tire pressure: 2 kgf/cm²
Measure standard: At 60 km/h
Fuel economy: 2.4 L/100km

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