The Subaru-Robin EC08D is a 78.5 cc (4.82 cu·in) single-cylinder air-cooled 2-stroke internal combustion general-purpose gasoline engine with horizontal PTO shaft.
The Subaru-Robin EC08D engine has a lined aluminum cylinder, float type carburetor, T.C.I. ignition system (Transistor Circuit Ignition) and recoil starter.
Cylinder bore is 50.0 mm (1.97 in) and piston stroke is 40.0 mm (1.57 in). The EC08D engine produced 3.3 PS (2.4 kW; 3.2 HP) at 5,500 rpm of maximum horsepower and 2.2 PS (1.6 kW; 2.2 HP) at 4,500 rpm of continuous power. Maximum torque is 5.0 N·m (0.51 kg·m, 3.7 ft·lb) at 3,600 rpm.
2-stroke, single cylinder
78.5 cm 3 (4.82 cu-in)
3.3 PS (2.4 kW; 3.2 HP) at 5,500 rpm
Max. torque (crank PTO)
5.0 N·m (0.51 kg·m, 3.7 ft·lb) at 3,600 rpm
Transistor Circuit Ignition
Unleaded gasoline (octane number 86 or higher)
Fuel tank capacity
PTO shaft rotation
Counterclockwise (from PTO shaft side)
Dimensions and Weight
Length, mm (in)
Width, mm (in)
Height, mm (in)
Dry weight, kg (lb)
2-stroke or an equivalent
Gasoline-lubricant mixture: 20-25:1
Spark plug gap
0.7-0.8 mm (0.028-0.031 in)
Spark plug tightening torque
27.5 N·m (2.8 kg·m, 20.3 ft·lb)
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