MANUFACTURED BY: HUSQVARNA VAPENFABRIKS AB HUSKVARNA, SWEDEN SERIES OR ASSEMBLY NUMBER: YEAR INTRODUCED: 1974 YEAR DISCONTINUED: ENGINE DISPLACEMENT: 65cc (4.0 cu. in.) NUMBER OF CYLINDERS: 1 CYLINDER BORE: 48mm (1.89 in.) PISTON STROKE: 36mm (1.42 in.) CYLINDER TYPE: Chrome plated aluminum INTAKE METHOD: Piston ported MANUFACTURER ADVERTISED H.P.: 3.8/2.8 hk/kW WEIGHT: 8.2 kg with 45cm bar & chain 18.7 lbs. with 18 in. bar & chain OPERATOR CONFIGURATION: One Man operation HANDLEBAR SYSTEM: Rigid CHAIN BRAKE: none CLUTCH: Centrifugal DRIVE TYPE: Direct CONSTRUCTION: Die cast magnesium MAGNETO TYPE: Bosch KB1 flywheel type CARBURETOR: Tillotson HS-123A series MAJOR REPAIR KIT: RK-23HS MINOR REPAIR KIT: DG-5HS/T AIR FILTER SYSTEM: Nylon mesh element STARTER TYPE: Husqvarna automatic rewind OIL PUMP: Automatic MAXIMUM ENGINE RPM: 7,000 IDLE RPM: IGNITION TIMING: BREAKER POINT SETTING: 0.3 to 0.4mm (0.012 in. to 0.016 in.) FLYWHEEL/COIL AIR GAP: Position is fixed SPARK PLUG TYPE: Champion CJ7Y SPARK PLUG GAP: 0.5mm (0.020 in.) CRANKSHAFT MAIN BEARINGS: Ball FUEL TANK CAPACITY: 0.7 litres (23.6oz.) FUEL OIL RATIO: 40:1 (4%) RECOMMENDED FUEL OCTANE: Regular MIX OIL SPECIFICATION: Two cycle mix oil CHAIN PITCH: 9.525mm (.375 in.) 3/8" CHAIN TYPE: BAR MOUNT PATTERN: 17 link SHORTEST GUIDE BAR SUPPLIED: 38cm (15 in.) LONGEST GUIDE BAR SUPPLIED: 61cm (24 in.) COLOUR SCHEME: Orange with Black rear handle