MANUFACTURED BY: |  | McCULLOCH MOTORS CORP. |
 | | LOS ANGELES, CALIFORNIA, U.S.A. |
SERIES OR ASSEMBLY NUMBER: | | NONE |
SERIAL NUMBER PREFIX: | | 12-25A |
YEAR INTRODUCED: | | July 1948 |
YEAR DISCONTINUED: | | March 1949 |
ENGINE DISPLACEMENT: | | 7.95 cu. in. (130cc) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 2.25 in. (57mm) |
PISTON STROKE: | | 2 in. 50.8mm) |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | Aluminum CHROME plated, later cast iron sleeve |
INTAKE METHOD: | | Rotary valve |
MANUFACTURER ADVERTISED H.P.: | | 5 |
WEIGHT: | | 48 lbs. (21.7 kg) powerhead only |
OPERATOR CONFIGURATION: | | Two Man operation |
HANDLEBAR SYSTEM: | | Rigid |
CHAIN BRAKE: | | none |
CLUTCH: | | Centrifugal |
DRIVE TYPE: | | Bevel gear transmission |
CONSTRUCTION: | | Die cast magnesium |
MAGNETO TYPE: | | McCulloch |
CARBURETOR: | | McCulloch diaphragm type |
MAJOR REPAIR KIT: | | nla |
MINOR REPAIR KIT: | | nla |
AIR FILTER SYSTEM: | | Wire screen |
STARTER TYPE: | | McCulloch Kickproof automatic rewind |
OIL PUMP: | | Manual accessory attachment |
MAXIMUM ENGINE RPM: | | |
IDLE RPM: | | |
IGNITION TIMING: | | Fixed, not adjustable |
BREAKER POINT SETTING: | | .018 in. (0.04mm) |
FLYWHEEL/COIL AIR GAP: | | 0.008 to 0.010 in. (0.2 to 0.25 mm) |
SPARK PLUG TYPE: | | Champion J8J |
SPARK PLUG GAP: | | .020 in. (0.05mm) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | |
FUEL OIL RATIO: | | 16:1 1/2 pint per gallon |
RECOMMENDED FUEL OCTANE: | | Regular |
MIX OIL SPECIFICATION: | | SAE 30 non-detergent |
CHAIN PITCH: | | 3/4 in. |
CHAIN TYPE: | | McCulloch |
BAR MOUNT PATTERN: | | |
SHORTEST GUIDE BAR SUPPLIED: | | 20 in. (51cm) |
LONGEST GUIDE BAR SUPPLIED: | | 60 in. (152cm) |
COLOUR SCHEME: | | McCulloch Yellow |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | 56776, micro fiche card 1 |
SERVICE MANUAL: | | |