Toro Snow Blower S-620 Specifications


The Toro company manufactured the Toro S-620 Snowthrower between 1985 and 1991. The single-stage snow thrower was designed for light residential and commercial use. Though Toro stopped making the S-620 model long ago, some people still operate these vintage snow-throwing machines. Knowing the specifications on the Toro S-620 can help you find proper parts and repair-related services for your snow thrower.


  • Most Toro snow throwers in the light residential class had a Tecumseh 2.5 horsepower engine, and the Toro S-620 was no exception. The two-cycle Tecumseh motor type was categorized under Toro model number AH600-1623P. When hard at work blowing snow, the S-620 clears a 20-inch swath.

Gas and Oil

  • The S-620's engine used Toro 2-cycle/NMMA-TCW3 engine oil, as did most other Toro models ranging from 2 to 4.5 horsepower. The mix ratio for the S-620 model was 50:1. The right gasoline-to-oil mixture called for 2.6 ounces of oil for every 1 gallon of gasoline. Getting that mixture correct is essential to getting the Toro S-620 up and running.


  • The manufacturer made the S-620 ignition of coils with air gaps that measured .013 inches, and the snow thrower used Champion RCJ8Y spark plugs gapped at .030 inches. Spark plugs are pivotal to the engine starting in cold weather. Faulty spark plugs burn more gasoline and, in a worst-case scenario, prohibit the engine from starting.


  • The Toro S-620 was dual-power model, designed to operate on electricity provided by an extension cord or on gasoline. To start the snow thrower, pull the choke and press the primer until the engine turns over. Cold weather may require you do it several times, depending on just how cold the unit is. When you press the primer, it pumps gasoline into the carburetor, which delivers the right mix to start this vintage machine's engine.

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