For professional walk-behind mowers, offering heavy-duty durability and outstanding commercial performance.



Commercial grade dual element air cleaner

Cylindrical two stage filtration for optimum engine performance

Durable metal engine shroud

Solid protection for frequent use and transportation

Heavy-duty recoil assembly

Built-in strength for high levels of use

Tough ball-bearing crankshaft support

Withstands heavy use for exceptional long term durability

Pressurised lubrication

Sustained performance over uneven ground and slopes


Engine Type 4-Stroke, Vertical Shaft, OHV, Single Cylinder, Air-cooled
Number of cylinders 1
Bore x stroke 65 x 54 mm
Displacement 179 cm³
Max. power 3.4 kW (4.5 hp) / 3600 rpm
Max. torque 10.0 Nm (7.3 ft.lbs) / 2400 rpm
Fuel tank capacity 1.7 litres
Oil capacity 0.65 litres
Dry weight 17.0 kg
Dimensions (L x W x H) (mm) 422 x 353 x 289 (with tank)
389 x 353 x 289 (without tank)

Performance curves

The power rating of this engine is the Net power rating tested on a production engine and measured in accordance with SAE J1349.

Actual power output will vary depending on numerous factors, including, but not limited to, the operating speed of the engine in application, environmental conditions, maintenance, and other variables.

Performance curves


  • Pressurised lubrication
  • Ball type top bearing
  • Internally vented carburetor
  • Cast iron cylinder liner
  • Metal engine shroud
  • Dual element cylindrical air cleaner
  • Combined crankcase design
  • Rotating grass screen
  • Heavy duty recoil


  • Shaft variations
  • Fuel tank
  • Various speed control options
  • Spin-on oil filter
  • Fuel tap
  • Flywheel brake
  • M10 threaded mounting holes

Dimensional Specifications