How to Change the Spark Plugs in an Ariens Snow Blower

Things You\’ll Need

  • Spark plug socket wrench

  • Plug gapping tool

... Common small-engine spark plug

Ariens manufactures a variety of outdoor power tools, including snow blowers for consumer use. Ariens snow blowers are built with Briggs & Stratton engines similar in design and operation to those found on many lawn mower brands. The snow blower engine uses a spark plug mounted on top of the engine to provide a spark for combustion. Ariens recommends changing the plug annually before the onset of winter. Check the separate Briggs & Stratton manual that comes with the equipment to determine the proper plug gap for your particular engine.

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Step 1

Pull the wire off the spark plug on top of the Ariens engine.

Step 2

Unscrew the old plug with the spark plug socket wrench, turning the wrench to the left to remove the plug.

Step 3

Set the gap on the new spark plug to the measurement recommended for your particular engine, using the gapping tool to bend the L-shaped wire on one end of the plug. A common plug gap is 0.03 inches for many small Briggs & Stratton engines, but models vary on Ariens snow blowers so check your engine for specifics.

Step 4

Insert the threaded end of the new plug into the socket on top of the engine and tighten with the wrench,

Step 5

Connect the engine wire to the tip of the new plug.