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Honda Horizontal Engine: GX120-AR with Rammer Engine

A OHV horizontal shaft lightweight engine. Overhead Valve design offers cooler, fuel-efficient operation and cast iron cylinder sleeve provides longer service life. 

Common uses include powering:edgers, pumps, small construction equipment, reel-type lawn mowers and rammers (compaction equipment).

View: GX120 Owner's Manual

Product Features:

  • Fuel efficient, high output operation - precision camshaft design offers precise valve timing, optimal valve overlap, and better fuel efficiency

  • Smooth performance - ball bearing supported crankshaft for increased stability and lower vibration

  • Exceptionally quiet - multi chamber exhaust; improved camshaft and muffler reduce overall engine noise by up to 5 dB

  • Proven reliability - dual element air cleaner, cast iron cylinder sleeve, oil alert

  • Emissions compliant - CARB and EPA certified

  • Automatic decompression for easy starting

  • 3 year limited manufacturer's warranty included!

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Product Specifications:
Engine TypeAir-Cooled, 4-Stroke OHVPTO Shaft RotationCounterclockwise
Bore Stroke2.4" X 1.7"Compression Ratio8.5:1
Displacement118 ccCarburetorFloat
Net Power Output3.5 HP @ 3600 RPMMax. RPM3600
Net Torque5.4 @ 2500 RPMStarting SystemRecoil
Crankshaft Diameter3/4"Lubrication SystemSplash
Crankshaft Length2-7/16"Governor SystemMechanical
Crankshaft End Tapped Sizetapped 5/16"-24 UNFAir CleanerDual Element
Crankshaft Keyway Width1/4"MufflerIncluded
Oil Capacity0.59 quarts3 year limited manufacturer's warranty

Fuel Tank Capacity2.1 quarts30 lbs. shipping weight

Alternate Model Numbers:

  • GX120UT2AR

  • GX120AR

  • GX120UT1AR

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