This is the Thunder Tiger GP .65 2-Stroke Model Airplane Engine w/Muffler.

FEATURES: CNC machined construction for precise tolerances
          ABN piston and sleeve "A"luminum piston with a "B"rass cylinder
            liner that is "N"ickel plated
          Three chamber muffler
          Dual needle valve air bleed carburetor with needle valve angled
            rearward for added safety
          Redline R2 glow plug
          Schnuerle-boost combustion porting
          Three year limited warranty through Hobby Services beginning at date
            of purchase

INCLUDES: Thunder Tiger GP .65 2-Stroke Engine with glow plug, carburetor,
            muffler, decals and instruction manual

REQUIRES: Fuel: 18% lubricant and 10-15% nitro content, synthetic/castor blend
            lubricant recommended (do not use more than 10% nitro content for
            break in)
          Propeller: Break-in: 11x6, 12x6 normal use
          Glow starter, plug wrench and field equipment

SPECS:    Displacement: .646 cu in (10.58cc)
          Bore: 0.953" (24.2mm)
          Stroke: 0.906" (23mm)
          Practical RPM: 2,000 - 16,000
          Output: 2.00 HP @ 15,000 rpm
          Weight: 24.46oz (693.4g) without muffler
          Crankshaft Size: UNC 5/16-24

            Carburetor Settings-NOTE carburetor is preset from the factory and
            requires only small adjustments
          Needle Valve: 2 - 2-1/2 turns counterclockwise from closed
          Idle Mixture Adjustment: After setting needle valve, 15° clockwise
            if mixture is too rich or 15° counter-clockwise if mixture is too
            lean-never turn more than 15° at a time or one full turn total

          Height from Mounting Tab Bottom to Top Cylinder Head: 3.26" (82.9mm)
          Height from Crankcase Bottom to Top of Cylinder Head: 4.11" (104.4mm)
          Width at Mounting Tabs: 2.42" (61.5mm)
          Width of Crankcase below Mounting Tabs: 1.7" (43.2mm)
          Center of Mounting Holes Same Side: 0.98" (25mm)
          Center of Mounting Holes Opposite Side: 2.05" (52mm)
          Center of Crankcase to Prop Washer: 2.52" (64.1mm)
          Distance from Backplate Screw to Prop Washer: 3.62" (91.9mm)

                                                                   jxs 10/21/10
                                                                         ir/jxs