25mm x 3 5/32, Std. Mower Mt.

FUEL EFFICIENT, HIGH OUTPUT OPERATION

• Compact combustion chamber, overhead cam design, and uniblock construction reduce fuel consumption | Learn More
• Powerful torque across a wide RPM range helps reduce engine speed drop from sudden load increases.

COMPACT AND LIGHTWEIGHT

• The lightest engines in their class
• The world's first general purpose engine internal timing belt | Learn More
• Tough resin overhead cam for durability and quietness
• Uni-block construction

QUIET, SMOOTH PERFORMANCE

• Internal timing belt provides quiet operation
• Valvetrain and gear noise is minimized
• Precision engineered and machined components result in lower vibration

PROVEN RELIABILITY

• Dua-Lube System provides superior engine lubrication
• Simple construction reduces many potential maintenance needs
• High quality materials, fit, and finish
• Single element air filter

EASY TO USE AND MAINTAIN

• Auto Choke System available | Learn More
• Auto Throttle available
• Easy access oil drain and fill
• Easily accessible spark plug
• Proven lifetime timing belt design | Learn More

EASY STARTING

• Horizontal cross-flow intake port to smooth the flow of fuel
• Automatic mechanical decompression | Learn More
• Electronic ignition

EMISSIONS COMPLIANT

• CARB and EPA certified
• No catalyst necessary
• Built in charcoal canister in gas cap

AVAILABLE OPTIONS

• Honda blade brake clutch assembly available for lawnmower applications
• Different controls are available for a variety of different applications (pressure washer, lawnmower, log splitter, etc.)
• Electric start version available

• Engine Type	Air-cooled 4-stroke OHC
  Bore x Stroke	2.7" x 2.0" (69 mm x 50 mm)
  Displacement	11.4 cu in (187 cm3)
  Net Power Output*	5.1HP (3.8 kW) @ 3600 rpm
  Net Torque	8.3 lb-ft (11.3 Nm) @ 2500 rpm
  PTO Shaft Rotation	Counterclockwise (from PTO shaft side)
  Compression Ratio	8.5:1
  Carburetor	Horizontal type butterfly valve
  Ignition System	Transistorized magneto
  Starting System	Recoil/electric
  Lubrication System	Splash
  Governor System	Centrifugal Mechanical
  Air Cleaner	Dry (paper filter)
  Oil Capacity	0.58 US qt (0.55l)
  Fuel Tank Capacity	0.98 U.S. qts (.93 liter)
  Fuel	Unleaded 86 octane or higher
  Dry Weight	27.6 lbs (12.5 kg)

  Dimensions
  Length (min)	14.4" (367mm)
  Width (min)	13.0" (331mm)
  Height (min)	13.8" (349mm)

  PTO Shaft Options
  N1	Straight shaft
  A2	Straight shaft
  S3	Straight shaft
  N5	Straight shaft
  N7	Straight shaft