Easy to Hndle Lively and Powerful The 4-cycle OHV system realizes easy starting and smoth revving Furthermore, employment of mecanical decompression system realizes extremely llight pulling force. Smooth and Steady Unique lubrication system, which separates chanber of the cylinder and crank from the oil chamber, ensures smooth, stable engine run when operatiing at a slant. High Output High output based on the concept of 2-cycle engine is brought into environmental friendly 4-cycle engines.

Clean and Quiet Clean and fuel-efficient The clean and fuel-efficient engines comply with the EPA phase 2 and CARB tier Ⅱemission regulations in the USA which is one tenth in emission compared with a 2-cycle engine. Also, fuel consumption is half compared with that of a 2-cycle engine. Quiet, low-vibration design Extremely quiet and mild engine sound is free from working stress. Detailed attention to the reduction of vibration creates the best in low-vibration operation. Light and compact The world's lightest and most compact 4-cycle engines in same displacement are brought by the unique technologies of Robin as a pioneer in compact engine design.(as of April 2002).

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Model	EH025A	EH025P
Type	Air-cooled,4-cycle,OHV gasoline engine
Bore x Stroke mm(in.)	34 x 27(1.34 x 1.06)
Piston displacement cc(cu.in.)	24.5(1.49)
Continuous output kW[PS](HP)/rpm	0.55[0.75](0.75)/7000
Maximum output kW[PS](HP)/rpm	0.81[1.1](1.1)/7000
Maximum torque N・m[kgf･m]/rpm(lbf･ft/rpm)	1.18[0.12]/5000,(0.87/5000)
Direction of rotation	Counter-Clockwise as viewed from PTO sfaft side
Fuel	Automobile unleaded gasoline
Fuel Tank capacity liter(US gal.)	0.5(0.13)
Lubricant	Engine oil SAE 10W-30 SF or higher
Lubrication	Forced lubrication
Lubricating oil capacity liter(US gal.)	0.08(0.021)
Carburetor	Diaphragm type
Starter	Recoil starter
lgnition system	Transistorized magneto
Spark plug	NGK CMR6A (M10×P1.0)
Air cleaner	Semi-wet type
Dry weight kg(lb)	2.8(6.17)	3.0(6.61)
Dimension length x width x height mm(in.)	170 x213 x 225 (6.69 x8.39 x 8.86)	219x213 x 225 (8.62 x8.39 x 8.86)

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	Spark arrester
	Stop switch
	Stand
	Tank guard

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