Standard Features: Model GX690RTXA2 Muffler Not Included, Sold Separately Electric Start Engine Controls -Key Switch,Throttle And Choke Controls Net Horsepower 22.3 hp (16.6 kW) (Honda rates by Net HP now) Net Torque 35.6 lbs ft (48.3 Nm) Compression Ratio 9.3 : 1 Quiet Running 688CC V-Twin Design 4 Cycle EPA CARB compliant Full Pressure Lubrication Oil Cooler Overhead Valve Design Cast Iron Cylinder Liner Oil Capacity 2.0 US qt (1.9 L) Evaporative Emissions Low permeation hose Purge joint provided Carburetor 2-barrel, fuel cut solenoid, inner vent Digital CDI Ignition System with Variable Ignition timing Variable Speed Governor 12 Volt Starter 17 Amp Alternator, Regulated 1 1/8" Diameter Shaft x 3 1/4" Long 3 Year Limited Manufacturers Warranty From Honda Dimensions (L x W x H) 15.9" (405 mm) x 16.1" (410 mm) x 17.2" ( 438 mm) Weight 98 lbs Click here to download owners manual Click here for advanced info