MANUFACTURED BY: PARTNER AB MOLNDAL, SWEDEN SERIES OR ASSEMBLY NUMBER: YEAR INTRODUCED: 1980, October YEAR DISCONTINUED: ENGINE DISPLACEMENT: 49ccm (3.0 cu. in.) NUMBER OF CYLINDERS: 1 CYLINDER BORE: 44mm (1.73 in.) PISTON STROKE: 32mm (1.26 in.) PISTON RING THICKNESS: CYLINDER TYPE: Chrome plated aluminum INTAKE METHOD: Piston ported MANUFACTURER ADVERTISED H.P.: WEIGHT: 5.1 kg (11.2 lbs.), powerhead only OPERATOR CONFIGURATION: One Man operation HANDLEBAR SYSTEM: Anti-vibration CHAIN BRAKE: Yes CLUTCH: Centrifugal DRIVE TYPE: Direct CONSTRUCTION: Die cast magnesium MAGNETO TYPE: EM electronic CARBURETOR: Walbro WA-82A series MAJOR REPAIR KIT: K10-WAT MINOR REPAIR KIT: D10-WAT AIR FILTER SYSTEM: Nylon mesh elemenet STARTER TYPE: Partner automatic rewind OIL PUMP: Automatic, adjustable MAXIMUM ENGINE RPM: 9,000, 13,500 no load IDLE RPM: where clutch disengages IGNITION TIMING: fixed BREAKER POINT SETTING: none FLYWHEEL/COIL AIR GAP: 0.3 mm (0.012 in.) SPARK PLUG TYPE: Champion DJ6Y, NGK BPMR6A SPARK PLUG GAP: 0.5mm (0.020 in.) CRANKSHAFT MAIN BEARINGS: Ball FUEL TANK CAPACITY: 0.7 litres (1.25 Imperial pints) FUEL OIL RATIO: 50:1 with Partner Oil otherwise 25:1 RECOMMENDED FUEL OCTANE: Regular MIX OIL SPECIFICATION: Partner Mix Oil CHAIN PITCH: 8.25mm (.325 in.) CHAIN TYPE: Partner Chisel BAR MOUNT PATTERN: SHORTEST GUIDE BAR SUPPLIED: 33cm (13 in.) LONGEST GUIDE BAR SUPPLIED: 38cm (15 in.) COLOUR SCHEME: Partner Yellow PAINT CODES: ILLUSTRATED PARTS LIST: SERVICE MANUAL: COMMENTS: Semi Pro version of model 5000