MANUFACTURED BY: |  | JO-BU A/S MEKANISKE VERKSTED |
 | | DROBAK, NORWAY |
SERIES OR ASSEMBLY NUMBER: | | |
SERIAL NUMBER PREFIX: | | |
YEAR INTRODUCED: | | 1972 |
YEAR DISCONTINUED: | | |
ENGINE DISPLACEMENT: | | 56 ccm (3.4 cu. in.) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | |
PISTON STROKE: | | |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | |
INTAKE METHOD: | | |
MANUFACTURER ADVERTISED H.P.: | | |
WEIGHT: | | |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Anti-vibration |
CHAIN BRAKE: | | no |
CLUTCH: | | Centrifugal |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast magnesium |
MAGNETO TYPE: | | |
CARBURETOR: | | Tillotson HS-139A |
MAJOR REPAIR KIT: | | RK-23HS |
MINOR REPAIR KIT: | | DG-5HS/T |
AIR FILTER SYSTEM: | | |
STARTER TYPE: | | JOBU automatic rewind |
OIL PUMP: | | Automatic |
MAXIMUM ENGINE RPM: | | 7,500 |
IDLE RPM: | | |
IGNITION TIMING: | | |
BREAKER POINT SETTING: | | |
FLYWHEEL/COIL AIR GAP: | | |
SPARK PLUG TYPE: | | |
SPARK PLUG GAP: | | |
CRANKSHAFT MAIN BEARINGS: | | |
FUEL TANK CAPACITY: | | |
FUEL OIL RATIO: | | 25:1 |
RECOMMENDED FUEL OCTANE: | | Regular |
MIX OIL SPECIFICATION: | | Two-cycle mix oil |
CHAIN PITCH: | | |
CHAIN TYPE: | | |
BAR MOUNT PATTERN: | | |
SHORTEST GUIDE BAR SUPPLIED: | | |
LONGEST GUIDE BAR SUPPLIED: | | |
COLOUR SCHEME: | | JoBu Orange enamel with Black |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | |
SERVICE MANUAL: | | |