This is the Thunder Tiger F-75S Four Stroke Model Airplane Engine.

FEATURES: CNC machined construction for precise tolerances
          Front and rear ball bearing supported crankshaft
          Easy to adjust airbleed carburetor
          Forged aluminum connecting rod with dual bushings
          Ringed piston
          Three year limited warranty

INCLUDES: Thunder Tiger F-75S Four Stroke Engine with header pipe, muffler,
            glow plug, two valve gauges, valve adjusting wrench, three hex
            wrenches and instruction sheet

REQUIRES: Fuel: 18% lubricant and 10-15% nitro content, synthetic/castor blend
            lubricant recommended
          Propeller: Break-in: 11x8
                     Stunt/Aerobatic: 11x8-9, 12x7-8, 12.5x6
                     Scale: 13.5x8, 14x7, 11x7 (3-blade)
          Glow starter, plug wrench and field equipment

SPECS:    Displacement: .752 cu in (12.33cc)
          Bore: 1.114" (28.3mm)
          Stroke: 0.772" (19.6mm)
          Practical RPM: 2,300 - 12,00 rpm
          Output: 1.2 HP @ 11,000 rpm
          Weight: 16.13oz (457.2g) without muffler
          Crankshaft Size: 1/4-28
          Height from Mounting Tab Bottom to Top of Rocker Arm: 3.5" (88.3mm)
          Height from Crankcase Bottom to Top of Rocker Arm: 4" (101.6mm)
          Width at Mounting Tabs: 2.12" (54mm)
          Width of Crankcase below Mounting Tabs: 1.43" (36.5mm)
          Center of Mounting Holes Same Side: .79" (20mm)
          Center of Mounting Holes Opposite Side: 1.8" (45mm)
          Center of Crankcase to Drive Washer: 2.25" (57.4mm)
          Distance from Backplate Screw to Drive Washer: 3.23" (82.2mm)

                                                                   jxs 02/05/09
                                                                         ir/jxs