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- For gas-powered machines, follow the recommendations in the
owner’s manual for changing the spark plug and--for models with a four-stroke
engine--the engine oil. Most recommend changing both at least once each
year.
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- Follow the recommendations for mixing oil and gas on models with
two-stroke engines. Too little oil can damage the engine; too much creates added
exhaust emissions and can hamper starting by fouling the spark
plug.
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- Add a fuel stabilizer to preserve the fuel between storms and
clearing seasons. Stabilizers can keep fuel from degrading for up to one year to
help prevent gum and varnish deposits from clogging the carburetor and fuel
passages.
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- For two-stage machines, have some spare auger shear bolts on
hand. The bolts are designed to protect the gearbox by breaking if the auger
hits a hard object.
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- For all machines, periodically tighten nuts and bolts,
especially on control linkages, which tend to loosen as a snow thrower
vibrates.
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- Adjust the auger’s scraper and skid shoes if applicable, as
suggested in the owner’s manual. Doing so helps keep the auger closer to the
surface, leaving less snow behind.
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