This is the DLE 55-RA Gasoline Engine with Electronic Ignition.

FEATURES: High performance in a compact package
          Rear exhaust for the perfect tuned pipe setup
          Pitts style aluminum muffler
          Newly designed piston with re-engineered skirt for less piston
            weight resulting in such advantages as awesome throttle response,
            more power and longer engine life
          Electronic ignition is the no-hassle answer to simpler starts,
            higher performance and minimal RF noise
          Producing 100 more rpm than the DLE50, the DLE 55-RA comes with
            engine standoffs, electronic ignition, spark plug and muffler
          Two year limited warranty through Hobby Services beginning at date
            of purchase

INCLUDES: DLE 55-RA Gasoline Engine
          Electronic Ignition
          Pitts Muffler
          NGK CM6 Spark Plug
          Four Engine Standoffs with Mounting Hardware
          Integrated Choke Rod Guide
          Rear-mounted Carb
          Instruction Manual

REQUIRES: Gasoline with at least 87 octane rating
          2-cycle oil, mix ratio for this engine is 30 parts gas to one part
            oil and must be followed exactly for warranty consideration
            and optimum performance
          4.8 - 12V battery for ignition
            (separate receiver style pack can be used) (LiPo & LiFe requires
            voltage regulator)
          Propeller and field equipment

SPECS:    Displacement: 55.6 cc (3.39 cu in)
          Bore: 1.76 in (45 mm)
          Stroke: 1.37" (35mm)
          Compression Ratio: 7.6:1
          Static Thrust: 14.5kg Pulling Force/100 meters altitude
           12.8kg Pulling Force/1,800 meters altitude
          Gasoline/Oil Mixture: 30:1
          Gasoline Octane Rating: 87
          Recommended Propellers: 22x8, 22x10, 23x8, 23x10
          Weight, engine: 3.74 lb (1.33kg)
          Weight, muffler: 3.17 oz (90 g)
          Weight, ignition module: 5.11 oz (145 g)
          Output: 5.5 hp @ 8,500 RPM
            Carburetor Adjustments;
          Low Speed Needle: 1.5 turns out as a starting point, adjust for a
            smooth idle and a reliable transition to high throttle
          High Speed Needle: 1.5 turns out from closed, adjust needle to peak
            RPM, if engine slows or dies at full throttle, the high-speed
            mixture is likely too lean
          Muffler Dimensions: 3.8 x 2.6 x 1.2" (97 x 66 x 31mm)
          Muffler Exhaust Outlet Diameter: 0.79" (20mm)
          Muffler Exhaust Outlet Length: 0.79" (20mm)
          Distance Between Mounting Hole Centers Same Side: 2.6" (67mm)
          Distance Between Mounting Hole Centers Opposite Side: 3.5" (90mm)
          Height from bottom/Crankcase to top of Cylinder Head: 5.9" (150mm)
          Width of Cylinder Head: 3.1" (80mm)
          Distance Between Muffler Mounting Hole Centers: 1.7" (43mm)
          Crankshaft Thread: 5mm/.8 pitch course thread

COMMENTS: To avoid permanent damage to the electronic ignition system, NEVER
            turn your DLE engine over with the system switched on and the plug
            not installed.

          Order DLEQ0551 if a Propeller Drill Guide is needed

                                                                    7/11/12 pjw
                                                                   jxs 09/24/12
                                                                         ir/jxs