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YZ400D

Category: Motocross
Manufacturer: Yamaha show models
Hits: 686
Year 1977
Engine Class 400
VIN Prefix 1W4
Known VIN Range (Vehicle ID Numbers) 000101--006720
Tank Color(s) Competition Yellow
Country of Sale USA
Bore (MM) 85
Stroke (MM) 70
Displacement (CC) 397
Compression Ratio (to 1) 7.59
BHP @ RPM 41 @ 7,500
Torque (kgm) @ RPM 4.05 @ 7,000
Autolube Injection? No
Engine Cooling Air
Carburetor Model VM38SS
Ignition Type CDI (Electronic)
Ignition Timing MM (BTDC) 2.7
Primary Drive Gearing 2.24
Final Drive Gearing (Sprockets) 50/14
Box Gearing First 2.29
Box Gearing Second 1.71
Box Gearing Third 1.3
Box Gearing Fourth 1.0
Box Gearing Fifth 0.84
Fuel Capacity (L) 8.0
Gearbox Oil Capacity 1.0
Front Tire (stock) 3.00 x 21
Rear Tire (stock) 5.00 x 18
Front Brake Type Drum
Rear Brake Type Drum
Rear Suspension Mono Shock
Front Suspension Travel (mm) 215
Rear Suspension Travel (mm) 215
Rake (degrees) 30.5
Trail (mm) 134
Overall Width (mm) 838
Ground Clearance (mm) 285
Wheelbase (mm) 1,445
Dry Weight (kg) 102
Voltage 6 Volt

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