The McCulloch Mac 1-43 chainsaw was a popular tool during its brief production period from May 1962 to May 1963. Manufactured by McCulloch Motors Corp. in Los Angeles, California, USA, this powerful chainsaw boasted a range of impressive features (for the time), including its lightweight construction and efficient automatic rewind starter.
Although it was only available for a short time, the Mac 1-43 left a lasting impression on those who used it, and it remains a sought-after collector’s item among chainsaw enthusiasts to this day.
Specifications
| Specification | Value |
|---|---|
| Engine displacement | 4.9 cu. in. (80 cc) |
| Cylinder bore | 2.125 in. (54 mm) |
| Piston stroke | 1.375 in. (35 mm) |
| Piston ring thickness | N/A |
| Cylinder type | Aluminum with cast iron sleeve |
| Intake method | Reed valves with third port induction system |
| Manufacturer advertised horsepower | N/A |
| Weight | 18.5 lbs. (8.4 kg) |
| Handlebar system | Rigid |
| Chain brake | None |
| Clutch | Centrifugal |
| Drive type | Direct |
| Construction | Die-cast magnesium |
| Magneto type | McCulloch |
| Carburetor | Tillotson HL series |
| Major repair kit | N/A |
| Minor repair kit | DG-5HL |
| Air filter system | Flocked wire screen |
| Starter type | McCulloch automatic rewind |
| Oil pump | Manual |
| Maximum engine RPM | N/A |
| Idle RPM | N/A |
| Ignition timing | Fixed |
| Breaker point setting | 0.018 in. (0.45 mm) located under flywheel |
| Flywheel/coil air gap | N/A |
| Spark plug type | Champion J7J, Autolite A7X, AC M45 |
| Spark plug gap | 0.025 in. (0.63 mm) |
| Crankshaft main bearings | Ball |
| Fuel tank capacity | 45 oz. (1.3 L) |
| Fuel/oil ratio | 20:1 |
| Recommended fuel octane | Regular |
| Mix oil specification | McCulloch two-cycle chain saw mix oil |
| Chain pitch | 0.404 in. (10.26 mm) |
| Chain type | McCulloch Super Pintail |
| Bar mount pattern | N/A |
| Shortest guide bar supplied | 12 in. (30 cm) |
| Longest guide bar supplied | 24 in. (60 cm) |
| Color scheme | McCulloch yellow enamel |
| Paint codes | N/A |
| Illustrated parts list | 68114, micro fiche card 3 |
| Service manual | 63829, micro fiche card 34C |
Features
- Manufactured by McCulloch Motors Corp. in Los Angeles, California, U.S.A.
- One-man operation with a rigid handlebar system
- Engine displacement of 4.9 cu. in. (80cc) with one cylinder and aluminum construction with a cast iron sleeve
- Intake method features reed valves with a third port induction system and a Tillotson HL series carburetor
- McCulloch automatic rewind starter type and manual oil pump
- Centrifugal clutch and direct drive type
- Die-cast magnesium construction with a flocked wire screen air filter system
- No chain brake, and the maximum engine RPM and idle RPM are not advertised
- McCulloch Yellow enamel color scheme
Conclusion
Overall, the McCulloch Mac 1-43 chainsaw was a powerful and reliable tool manufactured by McCulloch Motors Corp in Los Angeles, California, USA in 1962. It was known for its lightweight design and one-man operation, making it a popular choice for both professional and amateur use. Although it was discontinued in May 1963, its impact on the chainsaw industry can still be felt today.