The Subaru-Robin EC06B is a 60.8 cc (3.72 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 EC06B 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.
Cylinder bore is 44.0 mm (1.73 in) and piston stroke is 40.0 mm (1.57 in). The engine produced 2.6 PS (1.9 kW; 2.5 HP) at 2,000 rpm of maximum horsepower and 1.6 PS (1.2 kW; 1.6 HP) at 1,440 rpm or 1.9 PS (1.4 kW; 1.9 HP) at 1,800 of continuous power. Maximum torque is 9.3 N·m (0.9 kg·m, 6.9 ft·lb) at 1,480 rpm.
General information
| Engine Specifications | |
| Model | EC06B |
| Type | 2-stroke, single cylinder |
| Displacement | 60.8 cm 3 (3.72 cu-in) |
| Max. horsepower | 2.6 PS (1.9 kW; 2.5 HP) at 2,000 rpm |
| Max. torque (crank PTO) | 9.3 N·m (0.9 kg·m, 6.9 ft·lb) at 1,480 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 EC06B | |
| Length, mm (in) | 285 (11.2) |
| Width, mm (in) | 307 (12.1) |
| Height, mm (in) | 287 (11.3) |
| Dry weight, kg (lb) | 7.6 (16.8) |
Service Information
| Oil system | |
| Oil type | 2-stroke or an equivalent |
| Recommended oil | – |
| Oil capacity | Gasoline-lubricant mixture: 20-25:1 |
| Ignition system | |
| Spark plug | NGK: B6HS |
| 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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