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GX25 - Manufacturer: Honda

Meet the world’s lightest OHC engine.

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.

  • Commercial lawn and garden equipment
  • Tillers / cultivators
  • Construction / industrial equipment
  • Agricultural equipment
  • Water pumps
MSRP:$209.00
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Engine

Engine TypeAir-cooled 4-stroke OHC
Bore x Stroke35 mm x 26 mm
Displacement25 cm3
Net Power Output*1.0 HP (.72 kW) @ 7,000 rpm
Net Torque0.74 lb-ft (1.0 Nm) @ 5,000 rpm
PTO Shaft RotationCounterclockwise (from PTO shaft side)
Compression Ratio8.0:1
CarburetorDiaphragm-type (overflow return)
Ignition SystemTransistorized magneto
Starting SystemRecoil
Lubrication SystemCrankcase pressure-driven
Governor SystemNA
Air cleanerSemi-dry
Oil Capacity2.7 US oz (80cc)
FuelUnleaded 86 octane or higher
Fuel Tank Capacity.61 U.S. qt (0.58 liter)
Dry Weight6.8 lb (2.7 kg)

Dimensions

Length (min)7.6" (192mm)
Width (min)8.7" (221mm)
Height (min)9.1" (230mm)

Advanced Technology

  • 4-stroke - no fuel/oil mixing
  • Full 360° "any-side-up" operation - use and store in any position
  • Exclusive rotary-slinger lubrication system
  • The world’s lightest OHC engine

Fuel Efficient, High Output Operation

  • Approximately half the operating cost of comparable 2-stroke engines
  • Efficient port configuration and large diameter valves maximize power output
  • Lighter, more rigid valve train
  • Carburetor equipped with accelerator pump for fast, easy acceleration

Smooth Performance

  • Precision engineered components result in lower vibration
  • Lighter piston minimizes vibration
  • Ball bearing supported crankshaft for greater stability
  • Roller bearing supported connecting rod

Exceptionally Quiet

  • Belt-driven OHC design reduces mechanical noise
  • Large capacity, multi-chamber exhaust system
  • Sophisticated air intake system

Proven Reliability

  • High quality materials, fit, and finish
  • Lifetime timing belt design
  • Integrated fuel system protection
  • Diaphragm carburetor

Easy to Use and Maintain

  • Easily accessible spark plug
  • Easy to drain and re-fill oil
  • No mixing of gas and oil

Easy Starting

  • Exhaust decompression system
  • Unique low inertia design

Emissions Compliant

  • CARB and EPA certified
  • No catalyst necessary

Available Options

  • Special designs for horizontal and vertical applications available

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