Toro Gas lawn mower Parts — Browse All Models

Replacing the spark plug in your Toro gas walk-behind lawn mower

• When the engine is cool, disconnect the spark plug wire from the spark plug.
• Use a spark plug wrench to loosen and remove the spark plug.
• Use a spark plug gap tool to set the gap between the center electrode and the ground electrode. The gap specifications for your model are in the owner's manual.
• Thread the spark plug into the engine. Then tighten the spark plug with a spark plug wrench.
• Reconnect the spark plug wire and start the mower to make sure it runs.

Common replacement parts for Toro gas walk-behind lawn mowers

• Sparkplug. The sparkplug ignites the fuel mixture inside the engine cylinder to drive the crankshaft.
• Flywheel key. The flywheel key joins the flywheel to the crankshaft and the flywheel key shears off to protect the engine if the mower blade hits an immovable object such as a rock or tree stump.
• Cutting blade. The cutting blade spins below the mower deck to cut the grass.
• Air filter. The air filter traps dust and contaminants from air entering the carburetor.