MANUFACTURED BY: IEL (Industrial Engineering Ltd.) VANCOUVER, BRITISH COLUMBIA, CANADA SERIES OR ASSEMBLY NUMBER: Super Twin YEAR INTRODUCED: 1952 YEAR DISCONTINUED: 1953 ENGINE DISPLACEMENT: 9.82 cu. in. (161cc) NUMBER OF CYLINDERS: 2 CYLINDER BORE: 2.0 in. (50.8 mm) PISTON STROKE: 1.5625 in. (40 mm) CYLINDER TYPE: Aluminum with cast iron sleeve INTAKE METHOD: Rotary valve integral with crankshaft MANUFACTURER ADVERTISED H.P.: WEIGHT : 45 lbs. (20.4kg.) powerhead only OPERATOR CONFIGURATION: Two Man operation HANDLEBAR SYSTEM: Rigid CHAIN BRAKE: none CLUTCH: Centrifugal 3 shoe with bonded lining DRIVE TYPE: Bevel gear transmission 3.2-1 gear ratio CONSTRUCTION: Sand cast aluminum MAGNETO TYPE: Wico CARBURETOR: Tillotson MD-55A float type MAJOR REPAIR KIT: MINOR REPAIR KIT: AIR FILTER SYSTEM: Brass wire screen STARTER TYPE: IEL automatic rewind with steel cable OIL PUMP: Eccentric driven piston type in transmission with with manual assist OPERATING RPM: IGNITION TIMING: 27 degrees B.T.D.C. BREAKER POINT SETTING: .020 in. (0.51 mm) FLYWHEEL/COIL AIR GAP: Position is fixed SPARK PLUG TYPE: Champion J8J SPARK PLUG GAP: .025 in. (0.63 mm) CRANKSHAFT MAIN BEARINGS: Ball and roller types FUEL TANK CAPACITY: FUEL OIL RATIO: 10-1 RECOMMENDED FUEL OCTANE: Regular MIX OIL SPECIFICATION: SAE 40