As an Amazon Associate, we earn from qualifying purchases. Home » Honda Engines » GX660RHTDW Honda Engines . GX660RHTDW Honda Engines . GX660RHTDW Attributes Brand name, Manufacturer name, Manufacturer, BrandHonda Engines Weight110.0 WeightUnitlbs moq, multiple, tierMinQty11 MPNGX660RHTDW qtyInStock-2 SKU, Item#166139 Manufacturer's Warranty3 year limited warranty Ship Weight110.0 lbs Engine Displacement (cc)688 Start TypeElectric, shift type ApplicationLawn tractor, mower, utility vehicle, concrete saw, pressure washer, chipper/shredder, trencher, vibratory roller, ride-on cement trowel Engine TypeGX series OHV V-Twin commercial-duty Net Power Output (HP)21.5 (16.0 kW) at 3,600 RPM Net Torque (lbs /ft )35.6 (48.3 Nm) at 2,500 RPM Shaft OutputHorizontal CrankshaftT type Shaft Diameter (in )1 1/8 Shaft Length (in )3.55 Shaft Keyway (in )1/4, (Key size 6.3mm x 70mm) Shaft End Tapped (Diameter (in )/Threads per inch)7/16–20, UNF2B Shaft Rotation (From PTO Shaft Side)Counterclockwise PTO Height (in )5 1/4 Cylinders (qty ), Oil Capacity (qt )2 Cylinder BoreIntegrated Bore x Stroke (in )3.1 x 2.8 Compression Ratio9.3:1 Cooling SystemAir cooled Air Cleaner TypeDual element/cylindrical Fuel Tank, Muffler IncludedNot included Fuel TypeGasoline Fuel PumpBoost type Lubrication SystemFull pressure Ignition SystemElectonic, digital CDI w/variable ignition timing Governor SystemMechanical Carburetor2-barrel, fuel cut solenoid, inner vent Throttle Control, Choke ControlRemote (wire) Max RPM3,600 Charging System Amps20 Flywheel BrakeNo Bolt Circle (in )5, 6 1/2, 7 3/4 Mounting Base L x W (in )7 11/16 x 3 25/64–4 21/32 Dimensions L x W x H (in )15 7/8 x 16 1/8 x 17 3/16 EPA/CARB Approval (California Air Resource Board)Yes Distributor offers SellerSKUMOQIn stockMultiplePrices Northern Tool1661391-21