McCulloch Thrifty Mac Specifications

McCulloch Thrifty Mac Specifications

The McCulloch Thrifty Mac chainsaw was first introduced in 1957 and was manufactured by McCulloch Motors Corporation in Los Angeles, California, USA. It was discontinued the following year in 1958. The Thrifty Mac was a popular model due to its lightweight construction and easy one-man operation, making it ideal for use around the home and for light-duty jobs.

It featured a rigid handlebar system, a direct drive type, and a manual oil pump. The chainsaw also boasted a McCulloch flywheel magneto type, a McCulloch diaphragm type carburetor, and a flocked wire screen air filter system. The Thrifty Mac’s colour scheme was McCulloch Yellow enamel.


ManufacturerMcCulloch Motors Corpration
Year Introduced1957
Year Discontinued1958
Engine Displacement3.3 cu. in. (54 cc)
Cylinder Bore1.75 in. (44.4 mm)
Piston Stroke1.375 in. (35 mm)
Cylinder TypeAluminum with cast iron liner
Intake MethodReed valve
Advertised HorsepowerNot advertised
Handlebar SystemRigid
Chain BrakeNone
Drive TypeDirect
ConstructionDie-cast magnesium
Magneto TypeMcCulloch flywheel type
CarburetorMcCulloch diaphragm type
Major Repair Kitn/a
Minor Repair Kitn/a
Air Filter SystemFlocked wire screen
Starter TypeMcCulloch 2-pawl automatic rewind
Oil PumpManual
Maximum Engine RPM6,200
Ignition TimingFixed
Breaker Point SettingPoints just contact with timing pin in timing hole
Flywheel/Coil Air Gap0.010 in. (0.25 mm)
Spark Plug TypeChampion J8J
Spark Plug Gap0.025 in. (0.63 mm)
Crankshaft Main BearingsBall
Fuel/Oil Ratio1/2 pint of oil to 1 gallon of fuel
Recommended Fuel OctaneRegular grade
Mix Oil SpecificationMcCulloch two-cycle chain saw mix oil
Chain Pitch7/16 in. (11.112 mm)
Chain TypeOregon 61C
Shortest Guide Bar Supplied16 in. (40 cm)
Color SchemeMcCulloch Yellow Enamel


  • Rigid handlebar system for stability during operation
  • Die-cast magnesium construction for durability
  • Flocked wire screen air filter system for easy maintenance
  • McCulloch 2-pawl automatic rewind starter type for effortless starting
  • Centrifugal clutch for smooth operation
  • Direct drive type for efficient power transfer
  • Lightweight for ease of use and maneuverability
  • McCulloch yellow enamel color scheme for a classic look


To sum up, the McCulloch Thrifty Mac chainsaw was manufactured by the McCulloch Motors Corp. in Los Angeles, California, USA, in 1957. It was a lightweight and affordable saw that offered good power-to-weight ratio for the time. The chainsaw had a one-man operation, rigid handlebar system, direct drive type, and a die-cast magnesium construction. It was a two-cycle chain saw with a 54cc engine displacement and a 7/16 inch chain pitch. The Thrifty Mac was a popular choice among homeowners, farmers, and small businesses.

Despite being discontinued in 1958, it had a lasting impact on the chainsaw industry and helped to make chainsaws more accessible to a wider audience.

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