MANUFACTURED BY: PIONEER SAWS LTD. PETERBOROUGH, ONTARIO, CANADA SERIES OR ASSEMBLY NUMBER: P28, P28S YEAR INTRODUCED: 1976 YEAR DISCONTINUED: 1981 ENGINE DISPLACEMENT: 3.14 cu. in. (51.4cc) NUMBER OF CYLINDERS: 1 CYLINDER BORE: 1.625 in. (41mm) PISTON STROKE: 1.500 in. (38mm) CYLINDER TYPE: Aluminum with chrome plated bore INTAKE METHOD: Reed valves MANUFACTURER ADVERTISED H.P.: not advertised WEIGHT : OPERATOR CONFIGURATION: One Man operation HANDLEBAR SYSTEM: Anti-vibration CHAIN BRAKE: none CLUTCH: Centrifugal DRIVE TYPE: Direct CONSTRUCTION: Die cast magnesium MAGNETO TYPE: Wico CARBURETOR: Tillotson HU-15E series MAJOR REPAIR KIT: RK-14HU MINOR REPAIR KIT: DG-2HU AIR FILTER SYSTEM: Flocked screen STARTER TYPE: Easy Arc system with compression release OIL PUMP: Automatic OPERATING RPM: 7,500 IGNITION TIMING: 30 degrees before TDC BREAKER POINT SETTING: 0.015 in. (0.38mm) FLYWHEEL/COIL AIR GAP: position is fixed SPARK PLUG TYPE: Champion CJ6 SPARK PLUG GAP: 0.030 in. (0.76mm) CRANKSHAFT MAIN BEARINGS: Ball FUEL TANK CAPACITY: 12 fl. oz. (350 ml) FUEL OIL RATIO: 16:1 RECOMMENDED FUEL OCTANE: Regular MIX OIL SPECIFICATION: OMC Two-cycle chain saw mix oil CHAIN PITCH: .325 in. CHAIN TYPE: Pioneer Duraguard BAR MOUNT PATTERN: 01 link SHORTEST GUIDE BAR SUPPLIED: 14 in. (35cm) LONGEST GUIDE BAR SUPPLIED: 20 in. (51cm) COLOUR SCHEME: Pioneer Yellow enamel with Forest Green plastic air filter cover