| MODEL | YAMAHA XJ 750 SECA 1981 - 1983 |
| Year | 1981 - 1983 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder |
| Displacement / Capacity | 749 cc / 45.6 cu in |
| Bore X Stroke | 65 x 56.4 mm |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Max Power | 59.9 kW / 82 hp @ 9000 rpm |
| Max Torque | 67 Nm / 6.9 kgf-m @ 7500 rpm |
| Ignition | Transistorized |
| Induction | 4x 34 mm Mikuni carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | Steel double cradle |
| Front Suspension | Telescopic fork; 150 mm / 5.9 in travel |
| Rear Suspension | Swingarm; 96 mm / 3.8 in travel |
| Front Brakes | Single 269 mm disc |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 2195 mm |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1445 mm / 56.8 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 241 kg / 531.3 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 120/90-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 19 Litres / 4.7 US gal |
| Fuel Consumption | — |
| Top Speed | 204.3 km/h / 127 mph |
Shaft-driven air-cooled 750 four derived from the XJ650 Maxim engine with bigger bore and stroke, solid engine mounting and YICS cylinder heads. It combined anti-dive forks and an electronic warning monitor with a sporty chassis, which testers praised for cornering clearance. The power sat high in the rev range and the shaft drive could unsettle the rear under hard riding.
