MANUFACTURED BY: LOMBARD ASHLAND, MASS., U.S.A. SERIES OR ASSEMBLY NUMBER: YEAR INTRODUCED: 1954 YEAR DISCONTINUED: 1957 ENGINE DISPLACEMENT: 4.7 cu. in. (77 cc) NUMBER OF CYLINDERS: 1 CYLINDER BORE: 2.0 in. (50.8 mm) PISTON STROKE: 1.5 in. (38 mm) CYLINDER TYPE: Aluminum with cast iron sleeve INTAKE METHOD: Reed valves MANUFACTURER ADVERTISED H.P.: WEIGHT: OPERATOR CONFIGURATION: One Man operation HANDLEBAR SYSTEM: CHAIN BRAKE: CLUTCH: Centrifugal DRIVE TYPE: Gear Reduction CONSTRUCTION: Sand cast magnesium MAGNETO TYPE: Phelon CARBURETOR: Tillotson MAJOR REPAIR KIT: MINOR REPAIR KIT: AIR FILTER SYSTEM: Wire screen STARTER TYPE: Fairbanks Morse automatic rewind OIL PUMP: Manual MAXIMUM ENGINE RPM: 4,500 IDLE RPM: IGNITION TIMING: 0.175 in. (4.4 mm) before TDC BREAKER POINT SETTING: 0.020 in. (0.51 mm) FLYWHEEL/COIL AIR GAP: SPARK PLUG TYPE: Champion J8J, Autolite A7X, AC M45 SPARK PLUG GAP: 0.030 in. (0.76 mm) CRANKSHAFT MAIN BEARINGS: Ball FUEL TANK CAPACITY: FUEL OIL RATIO: 1/2 pint to 1 gallon RECOMMENDED FUEL OCTANE: 72 to 83 (regular grade) MIX OIL SPECIFICATION: Two-cycle mix oil CHAIN PITCH: 1/2 in. CHAIN TYPE: BAR MOUNT PATTERN: SHORTEST GUIDE BAR SUPPLIED: 16 in. (40 cm)