Subaru – EH Engines – EH25 – 2D – 8.5 HP


EH Engines – EH25 –2D– 8.5 HP

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EH Engines – EH25 –2D– 8.5 HP SUBARU EH Engine Series – Air Cooled, 4-Cycle, Horizontal & Vertical PTO Shaft Petrol Engines(Vertical Shaft only available V-Twins). Available from 4.0hp to 25hp.(OHV) Overhead Valves Located in the Cylinder Head.

Valve actuation is via pushrod and rocker arm. In a four-stroke engine, the intake and exhaust valves are in the cylinder head. The valve stems are either at an angle or parallel, and the valve discs face the piston.

The upright cylinder on the SUBARU EH Series enables optimum lubrication and better performance when operated tilted. In combination with the overhead valve design, the use of expander oil rings has reduced the engine oil consumption rate by 50%. Any of the engines in the new PRO OHV series can easily be started with a light pull of the recoil starter. Electric starters are available as an option for the entire series. Noise emission is reduced and also vibration levels.

Standard Features:

Ideal Power for:


EH25 –2D– 8.5 HP


EH64DS–20.5 HP


EH65DS – 22.0 HP



EH25 –2D– 8.5 HP EH64DS–20.5 HP EH65DS – 22.0 HP
Bore x Stroke (mm) 75×57 80×65 80×65
Piston Displacement (cm3) 251 653 653
Type Single,Cylinder, Horizontal PTO Shaft, Air-cooled Overhead Valve Gasoline Engine Air-Cooled V-twin Cylinder, Horizontal Shaft Overhead valve Engine Air-Cooled V-twin Cylinder, Horizontal Shaft Overhead valve Engine
Maximum Output HP(kW)/rpm 8.5(6.3)/4000 20.5(15.3)/3600 22.0(16.4)/3600
Continuous Output Hp(kW)/rpm 6.4(4.7)/3600 11.9(16.0)/3600 12.7(17.0)/3600
Maximum Torque kg m (Nm)/rpm 1.69(16.6)/2600 4.52(44.3)/2200 45.6 (4.65)2500
PTO Shaft Rotation Counter-Clockwise Facing PTO Shaft Counter Clockwise Facing PTO Shaft Counter Clockwise Facing PTO Shaft
Fuel Automobile Gasoline Automobile Unleaded Gasoline Automobile Unleaded Gasoline
Lubricating Oil Capacity (L) 1.0 1.55(With Filter) 1.55
Ignition System Pointless Electronic Ignition Pointless Electronic Ignition Flywheel magneto (solid state)
Charging System (V-A) N.A 12–15 12–15
Dry Weight (kg) 23.1 44.0 44.0
Dimensions LxWxH (mm) 332x380x440 317x477x475 317x477x475
Starting System Recoil Starter(Electronic starter as option) Electric Starter Electric Starter



Mentay Steel-Fab Constructions in Victoria manufactures and assembles commercial cricket rollers. For 25 years, Mentay’s choice is to power their high quality machines with SUBARU (Robin) engines – from the 7.5hp to the 22.5hp. Maurie mounts the engines on his Hydra-Glide Roller – a machine that is such an innovative concept in roller performance that it won the Industrial Design Award. This roller is designed to offer complete control over speed, direction and power, whilst giving you high torque at low revs. That’s where SUBARU (Robin) comes in…

To create the perfect cricket pitch, the grass needs to be well compacted. Most compaction is achieved by slow rolling. You therefore need an engine you can finely control. Maurie Menhennet, owner of Mentay says “The Robin stands on its own and will run cold – they run on the ‘idle’ without coking up, whereas some other engines coke up if the roller is worked slowly as required.”

The EH64 was chosen by one company to build their fire fighting pumps for a Rural Fire Service because “they are the only small engine I’ve found that has the exhaust coming out the back rather than the front, so fire fighters are not at risk of burning themselves from the heat of the engine. Because of this rear exhaust the fire fighters don’t have to breathe the carbon monoxide fumes from the pump!”

Other EH Engines

EH17 – 2D – 6.0 HP EH17 – 2D – 6.0 HP EH41D – 13.5 HP EH41D – 13.5 HP
EH64DS – 20.5 HP EH64DS – 20.5 HP EH65DS – 22.0 HP EH65DS – 22.0 HP
EH72DS – 25 HP EH72DS – 25 HP

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