Subaru-Robin EC08D

Subaru-Robin EC08DThe 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.

General information

Engine Specifications
ModelEC08D
Type2-stroke, single cylinder
Displacement78.5 cm 3 (4.82 cu-in)
Max. horsepower3.3 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
CarburetorFloat type
Cooling systemForced-air
Ignition systemTransistor Circuit Ignition
Lubricating systemMechanical splashing
Starting systemRecoil
Fuel usedUnleaded gasoline (octane number 86 or higher)
Fuel tank capacity1.5 L
PTO shaft rotationCounterclockwise (from PTO shaft side)

Dimensions and Weight

Subaru-Robin EC08D
Length, mm (in)256 (10.1)
Width, mm (in)307 (12.1)
Height, mm (in)287 (11.3)
Dry weight, kg (lb)7.8 (17.2)

Service Information

Oil system
Oil type2-stroke or an equivalent
Recommended oil
Oil capacityGasoline-lubricant mixture: 20-25:1
Ignition system
Spark plugNGK: B7HS
Spark plug gap0.7-0.8 mm (0.028-0.031 in)
Spark plug tightening torque27.5 N·m (2.8 kg·m, 20.3 ft·lb)
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