| MODEL | YAMAHA XS 750E 1978 |
| Year | 1978 |
| Engine Type | Four-stroke, transverse three-cylinder, DOHC, 2 valves per cylinder |
| Displacement / Capacity | 747 cc / 45.6 cu in |
| Bore X Stroke | 68 x 68.6 mm |
| Compression Ratio | 9.5:1 |
| Cooling System | Air cooled |
| Max Power | 54 kW / 74 hp @ 8400 rpm |
| Max Torque | — |
| Ignition | Magnetically triggered transistorised |
| Induction | 3 x Mikuni BS34-II constant-velocity carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5-speed |
| Clutch | Multi-plate, wet |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic forks, 175 mm / 6.9 in travel |
| Rear Suspension | Dual shocks, swing arm, preload adjustable, 80 mm / 3.15 in travel |
| Front Brakes | 2 x 267 mm discs |
| Rear Brakes | Single 265 mm disc |
| DIMENSION SPECS | |
| Overall Length | 2169 mm / 85.0 in |
| Overall Width | 965 mm / 38.0 in |
| Overall Height | 1185 mm / 46.7 in |
| Seat Height | 823 mm / 32.4 in |
| Wheelbase | 1470 mm / 57.9 in |
| Ground Clearance | 147 mm / 5.8 in |
| Dry Weight | — |
| Wet Weight | 253 kg / 557 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 4.00-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 17 Litres / 4.5 US gal |
| Fuel Consumption | 5.5 L/100 km / 42.9 US mpg |
| Top Speed | 171 km/h / 106 mph |
The 1978 update of the XS750 triple, with higher compression, constant-velocity carburettors and electronic ignition for noticeably more power. It remained the conventional, shaft-driven roadster of the range.
