1983 Yamaha SR 400 technical specifications
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					Technical specifications
					 | |
|---|---|
| Model: | SR 400 | 
| Years: | 1983-87 | 
| Engine: | Four stroke, single cylinder, SOHC, 2 valves per cylinder. | 
| Capacity: | 399 cc / 24.3 cu-in | 
| Bore x Stroke: | 87 х 67.2 mm | 
| Compression Ratio: | 8.5:1 | 
| Cooling System: | Air cooled | 
| Oil Capacity: | 2.4 Litres | 
| Lubrication: | Dry sump | 
| Induction: | BSR33 carburetor | 
| Ignition: | CDI | 
| Starting: | Kick | 
| Max Power: | 27 hp / 17.1 KW @ 7000 rpm | 
| Max Torque: | 27.4 Nm / 6.3 kgf-m @ 6500 rpm | 
| Clutch: | Wet, Multiple Disc | 
| Transmission: | 5 Speed | 
| Final Drive: | Chain | 
| Frame: | Steel Double Cradle | 
| Front Suspension: | Telescopic fork | 
| Front Wheel Travel: | 111 mm / 4.3 in | 
| Rear Suspension: | Dual shocks | 
| Front Brakes: | Single disc | 
| Rear Brakes: | Drum | 
| Front Tyre: | 3.50-19 | 
| Rear Tyre: | 4.00-16 | 
| Rake Caster Angle: | 27º | 
| Trail: | 111 mm / 4.4 in | 
| Wheelbase: | 1410 mm / 55.5 IN | 
| Seat Height: | 790 mm / 30.9 in | 
| Ground Clearance: | 130 mm / 5.1 in | 
| Wet Weight: | 174 kg / 384 lbs | 
| Fuel Capacity: | 12 Litres / 3.2 gal |