MANUFACTURED BY: |  | McCULLOCH MOTORS CORP. |
 | | LOS ANGELES, CALIFORNIA, U.S.A. |
SERIES OR ASSEMBLY NUMBER: | | 600100 |
SERIAL NUMBER PREFIX: | | 12-, A12- |
YEAR INTRODUCED: | | May 1970 |
YEAR DISCONTINUED: | | July 1975 |
ENGINE DISPLACEMENT: | | 5.3 cu. in. (87ccm) |
NUMBER OF CYLINDERS: | | 1 |
CYLINDER BORE: | | 2.125 in. (53.9 mm) |
PISTON STROKE: | | 1.500 in. (38 mm) |
PISTON RING THICKNESS: | | |
CYLINDER TYPE: | | Aluminum with cast iron sleeve |
INTAKE METHOD: | | Reed valves with third port transfer |
MANUFACTURER ADVERTISED H.P.: | | not advertised |
WEIGHT: | | 18 lbs. (8.16 kg) powerhead only |
OPERATOR CONFIGURATION: | | One Man operation |
HANDLEBAR SYSTEM: | | Rigid |
CHAIN BRAKE: | | none |
CLUTCH: | | Centrifugal, engages @ 2,800 RPM |
DRIVE TYPE: | | Direct |
CONSTRUCTION: | | Die cast MAGNESIUM |
MAGNETO TYPE: | | McCulloch flywheel breaker point system |
CARBURETOR: | | Tillotson HL series or McCulloch 84050 |
MAJOR REPAIR KIT: | | |
MINOR REPAIR KIT: | | Tillotson DG5-HL |
AIR FILTER SYSTEM: | | Flocked wire screen element |
STARTER TYPE: | | McCulloch automatic rewind on left side |
OIL PUMP: | | Automatic with manual override |
MAXIMUM ENGINE RPM: | | 6,000 |
IDLE RPM: | | 2,500 |
IGNITION TIMING: | | 25 degrees before TDC |
BREAKER POINT SETTING: | | 0.019 in. (0.48 mm) to 0.020 in. (0.5 mm) |
FLYWHEEL/COIL AIR GAP: | | 0.011 to 0.015 in. (0.27 to 0.38 mm) |
SPARK PLUG TYPE: | | Champion J8J, Autolite A7X, AC M45 |
SPARK PLUG GAP: | | 0.025 in. (0.63 mm) |
CRANKSHAFT MAIN BEARINGS: | | Ball |
FUEL TANK CAPACITY: | | 40 oz. |
FUEL OIL RATIO: | | 40:1 with McCulloch oil |
RECOMMENDED FUEL OCTANE: | | Regular |
MIX OIL SPECIFICATION: | | McCulloch two-cycle chain saw mix oil |
CHAIN PITCH: | | .404 pitch |
CHAIN TYPE: | | McCulloch |
BAR MOUNT PATTERN: | | |
SHORTEST GUIDE BAR SUPPLIED: | | 12 in. (30 cm) |
LONGEST GUIDE BAR SUPPLIED: | | 24 in. (61 cm) |
COLOUR SCHEME: | | McCulloch Yellow enamel with Black |
PAINT CODES: | | |
ILLUSTRATED PARTS LIST: | | 84268, micro fiche card 9 |
SERVICE MANUAL: | | 63829, micro fiche card 34D |