MANUFACTURED BY: HYRY (AUTO-KONEISTAMO OY) HELSENKI, FINLAND SERIES OR ASSEMBLY NUMBER: YEAR INTRODUCED: 1959 YEAR DISCONTINUED: 1964 ENGINE DISPLACEMENT: 90 cc NUMBER OF CYLINDERS: 1 CYLINDER BORE: 52 mm PISTON STROKE: 42 mm CYLINDER TYPE: INTAKE METHOD: Reed valve MANUFACTURER ADVERTISED H.P.: 6 WEIGHT: 11.5 kg with bar & chain OPERATOR CONFIGURATION: One Man operation HANDLEBAR SYSTEM: Rigid CHAIN BRAKE: none CLUTCH: Centrifugal DRIVE TYPE: Direct CONSTRUCTION: Die cast magnesium MAGNETO TYPE: CARBURETOR: Tillotson HL series (HL-72A?) MAJOR REPAIR KIT: nla MINOR REPAIR KIT: DG-1HL AIR FILTER SYSTEM: STARTER TYPE: OIL PUMP: Manual MAXIMUM ENGINE RPM: 6,000 IDLE RPM: IGNITION TIMING: 3.0 mm before TDC BREAKER POINT SETTING: FLYWHEEL/COIL AIR GAP: 0.45 to 0. 50 mm SPARK PLUG TYPE: Lodge CC14 SPARK PLUG GAP: CRANKSHAFT MAIN BEARINGS: FUEL TANK CAPACITY: 1.3 Litres FUEL OIL RATIO: 20:1 RECOMMENDED FUEL OCTANE: MIX OIL SPECIFICATION: CHAIN PITCH: CHAIN TYPE: BAR MOUNT PATTERN: SHORTEST GUIDE BAR SUPPLIED: LONGEST GUIDE BAR SUPPLIED: COLOUR SCHEME: Blue with White enamel some were built with complete RED paint job