MANUFACTURED BY: |  | OLEO-MAC |
 |  | REGGIO EMILIA, ITALY |
SERIES OR ASSEMBLY NUMBER: |  | 53 |
SERIAL NUMBER PREFIX: |  | |
YEAR INTRODUCED: |  | 1978 |
YEAR DISCONTINUED: |  | 1981 |
ENGINE DISPLACEMENT: |  | 53cc (3.3 cu. in.) |
NUMBER OF CYLINDERS: |  | 1 |
CYLINDER BORE: |  | 46mm (1.8 in.) |
PISTON STROKE: |  | 32mm (1.26 in.) |
PISTON RING THICKNESS: |  | |
CYLINDER TYPE: |  | Aluminum with chrome impregnated bore |
INTAKE METHOD: |  | Piston ported |
MANUFACTURER ADVERTISED H.P.: |  | 7 SAE |
WEIGHT: |  | 7.1kg with 40cm bar & chain
15.6 lbs. with 16 in. bar & chain |
OPERATOR CONFIGURATION: |  | One Man operation |
HANDLEBAR SYSTEM: |  | |
CHAIN BRAKE: |  | |
CLUTCH: |  | Centrifugal, engages @ 3000 rpm |
DRIVE TYPE: |  | Direct |
CONSTRUCTION: |  | Die cast magnesium |
MAGNETO TYPE: |  | Selettra electronic |
CARBURETOR: |  | Tillotson HS-128B |
MAJOR REPAIR KIT: |  | RK-23HS |
MINOR REPAIR KIT: |  | DG-5HS/T |
AIR FILTER SYSTEM: |  | Flocked wire screen |
STARTER TYPE: |  | Automatic rewind |
OIL PUMP: |  | Automatic, piston pump |
MAXIMUM ENGINE RPM: |  | |
IDLE RPM: |  | |
IGNITION TIMING: |  | fixed |
BREAKER POINT SETTING: |  | none |
FLYWHEEL/COIL AIR GAP: |  | |
SPARK PLUG TYPE: |  | Bosch WKA 175 T6, Champion CJ7Y |
SPARK PLUG GAP: |  | 0.5mm (0.020 in.) |
CRANKSHAFT MAIN BEARINGS: |  | Ball |
FUEL TANK CAPACITY: |  | 700ml (24.63 Imp. Oz.) |
FUEL OIL RATIO: |  | 20:1 |
RECOMMENDED FUEL OCTANE: |  | Regular |
MIX OIL SPECIFICATION: |  | Castrol two-stroke chain saw mix oil |
CHAIN PITCH: |  | 3/8 in. |
CHAIN TYPE: |  | Oregon |
BAR MOUNT PATTERN: |  |  |
SHORTEST GUIDE BAR SUPPLIED: |  | 40cm (16 in.) |
LONGEST GUIDE BAR SUPPLIED: |  | 46cm (18 in.) |
COLOUR SCHEME: |  | Orange enamel |
PAINT CODES: |  | |
ILLUSTRATED PARTS LIST: |  |  |
SERVICE MANUAL: |  |  |