Honda applied our superior engine technology to create the world's first 360° inclinable 4-stroke engines. The ultra-lightweight GX25 mini 4-stroke efficiently delivers the kind of efficient cleaner, powerful, quiet performance that you'd expect from a larger engine- but in a very compact package.
Common Applications:
- Commercial lawn and garden equipment
- Tillers / cultivators
- Construction / industrial equipment
- Agricultural equipment
- Water pumps
Features
| ADVANCED TECHNOLOGY | 4-stroke – no fuel/oil mixing |
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| Full 360° “any-side-up” operation – use and store in any position |
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| Exclusive rotary-slinger lubrication system |
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| The world’s lightest OHC engine |
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| Fuel Efficient, High Output Operation |
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| Approximately half the operating cost of comparable 2-stroke engines |
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| Efficient port configuration and large diameter valves maximize power output |
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| Lighter, more rigid valve train |
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| Carburetor equipped with accelerator pump for fast, easy acceleration |
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| SMOOTH PERFORMANCE | Precision engineered components result in lower vibration |
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| Lighter piston minimizes vibration |
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| Ball bearing supported crankshaft for greater stability |
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| Roller bearing supported connecting rod |
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| EXCEPTIONALLY QUIET | Belt-driven OHC design reduces mechanical noise |
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| Large capacity, multi-chamber exhaust system |
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| Sophisticated air intake system |
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| PROVEN RELIABILITY | High quality materials, fit and finish |
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| Lifetime timing belt design |
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| Integrated fuel system protection |
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| Diaphragm carburetor |
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| EASY TO USE AND MAINTAIN | Easily accessible spark plug |
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| Easy to drain and re-fill oil |
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| No mixing of gas and oil |
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| EASY STARTING | Exhaust decompression system |
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| Unique low inertia design |
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| EMISSIONS COMPLIANT | Applicable models meet the strictest world standards, contact Honda for more info |
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| No catalyst necessary |
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| AVAILABLE OPTIONS | Special designs for horizontal and vertical applications available |
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Specifications
| Model | GX25 |
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| Type | 4-stroke, overhead cam, single-cylinder, horizontal shaft |
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| Bore & Stroke | 35 x 26 mm (1.4 x 1.0 in) |
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| Displacement | 25cm3 (1.5 cu in) |
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| Compression Ratio | 8.0:1 |
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| Net Power | 0.72kW (1.0HP) at 7,000 rpm |
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| Maximum Net Torque | 1.0 Nm (0.74 lbs ft) at 5,000 rpm |
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| Ignition System | Transistorised magneto ignition |
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| Starting System | Recoil Starter |
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| Cooling System | Forced-air |
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| PTO Shaft Rotation | Counter-clockwise (from P.T.O. side) |
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| Fuel Consumption at Rated Power | 0.54 L/h at 7,000 rpm |
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| Lubrication System | Oil Mist |
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| Recommended Oil | 10W/30 API SG |
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| Oil Capacity (Litres) | 0.08L |
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| Fuel Capacity (Litres) | 0.55L |
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| Dimensions | 192mm x 221mm x 230mm |
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| Dry Weight | 2.78kg (w/o clutch) |
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| Other Specs | Infinite Operating Angles |
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