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OLYMPIC OLEO MAC SUPER 251 A

MANUFACTURED BY: OLEO-MAC REGGIO EMILIA, ITALY SERIES OR ASSEMBLY NUMBER: 52 YEAR INTRODUCED: YEAR DISCONTINUED: ENGINE DISPLACEMENT: 53cc NUMBER OF CYLINDERS: 1 CYLINDER BORE: 46mm (1.8 in.) PISTON STROKE: 32mm (1.26 in.) PISTON RING THICKNESS: CYLINDER TYPE: Aluminum with chrome impregnated bore INTAKE METHOD: Piston Ported MANUFACTURER ADVERTISED H.P.: 7 SAE WEIGHT: 6.9kg with 40 cm bar & chain 15.2 lbs. with 16 in. bar & chain OPERATOR CONFIGURATION: One Man operation HANDLEBAR SYSTEM: Rigid CHAIN BRAKE: none CLUTCH: Centrifugal DRIVE TYPE: Direct, clutch engages @ 3000 rpm CONSTRUCTION: Die cast mangesium MAGNETO TYPE: Selettra electronic CARBURETOR: Tillotson HS-128B or Walbro WJ-8-1 MAJOR REPAIR KIT: RK-23HS for Tillotson K10-WJ for Walbro MINOR REPAIR KIT: DG-5HS/T for Tillotson D10-WJ for Walbro AIR FILTER SYSTEM: Flocked wire screen STARTER TYPE: Automatic rewind OIL PUMP: Automatic, piston pump MAXIMUM ENGINE RPM: IDLE RPM: IGNITION TIMING: fixed BREAKER POINT SETTING: none FLYWHEEL/COIL AIR GAP: SPARK PLUG TYPE: Bosch WKA 175 T6, Champion CJ7Y SPARK PLUG GAP: 0.5mm (0.020 in.) CRANKSHAFT MAIN BEARINGS: Ball FUEL TANK CAPACITY: 700ml (24.63 Imp. Oz.) FUEL OIL RATIO: 20:1 RECOMMENDED FUEL OCTANE: Regular MIX OIL SPECIFICATION: Castrol two-stroke chain saw mix oil CHAIN PITCH: 3/8 in. CHAIN TYPE: Oregon BAR MOUNT PATTERN: SHORTEST GUIDE BAR SUPPLIED: 40cm (16 in.) LONGEST GUIDE BAR SUPPLIED: 46cm (18 in.) COLOUR SCHEME: Orange enamel with Black handles and air filter cover