Subaru-Robin EC08B

Subaru-Robin EC08BThe 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)
Author: Sergei Wers
About: Co-founder and CEO of a multi-brand auto repair shop (engine repair, chassis repair, body repair and painting) for over 15 years. I have been developing internet sites with technical specifications for more than seven years.

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