General information
Model:	Yamaha U7E
Year:	1973
Category:	Scooter
Engine and transmission
Displacement:	72.00 ccm (4.39 cubic inches)
Engine type:	Single cylinder
Stroke:	2
Power:	4.90 HP (3.6 kW)) @ 6500 RPM
Torque:	6.37 Nm (0.6 kgf-m or 4.7 ft.lbs) @ 4500 RPM
Compression:	6.8:1
Bore x Stroke:	47.0 x 42.0 mm (1.9 x 1.7 inches)
Fuel system:	Carburettor
Starter:	Electric & kick
Transmission type final drive:	Chain
Physical measurements
Dry weight:	77.0 kg (169.8 pounds)
Overall height:	1,005 mm (39.6 inches)
Overall length:	1,840 mm (72.4 inches)
Overall width:	645 mm (25.4 inches)
Ground clearance:	135 mm (5.3 inches)
Wheelbase:	1,175 mm (46.3 inches)
Speed and acceleration
Top speed:	85.0 km/h (52.8 mph)
Power/weight ratio:	0.0636 HP/kg
Other specifications
Fuel capacity:	4.50 litres (1.19 gallons)