The Subaru-Robin EC08B 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 and speed reduction system..
The Subaru-Robin EC08B engine has a lined aluminum cylinder, float type carburetor, T.C.I. ignition system (Transistor Circuit Ignition), recoil starter and speed reduction system with 1:2.5 reduction gear.
The cylinder bore is 50.0 mm (1.97 in) and the piston stroke is 40.0 mm (1.57 in). The EC08B engine produced 3.3 PS (2.4 kW; 3.2 HP) at 2,200 rpm of maximum horsepower and 2.2 PS (1.6 kW; 2.2 HP) at 1,800 rpm of continuous power. Maximum torque is 12.5 N·m (1.3 kg·m, 9.2 ft·lb) at 1,440 rpm.
General information
Engine Specifications | |
Model | EC08B |
Type | 2-stroke, single cylinder |
Displacement | 78.5 cm 3 (4.82 cu-in) |
Max. horsepower | 3.3 PS (2.4 kW; 3.2 HP) at 2,200 rpm |
Max. torque (crank PTO) | 12.5 N·m (1.3 kg·m, 9.2 ft·lb) at 1,440 rpm |
Carburetor | Float type |
Cooling system | Forced-air |
Ignition system | Transistor Circuit Ignition |
Lubricating system | Mechanical splashing |
Starting system | Recoil |
Fuel used | Unleaded gasoline (octane number 86 or higher) |
Fuel tank capacity | 1.5 L |
PTO shaft rotation | Counterclockwise (from PTO shaft side) |
Dimensions and Weight
Subaru-Robin EC08B | |
Length, mm (in) | 285 (11.2) |
Width, mm (in) | 307 (12.1) |
Height, mm (in) | 287 (11.3) |
Dry weight, kg (lb) | 8.8 (19.4) |
Service Information
Oil system | |
Oil type | 2-stroke or an equivalent |
Recommended oil | SAE 30 |
Oil capacity | Gasoline-lubricant mixture: 20-25:1 |
Ignition system | |
Spark plug | NGK: B7HS |
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) |
We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. We do not provide advice on technical issues related to the engines operation or repair. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs.
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