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This video from Sears PartsDirect shows how to replace a blade on a lawn mower. It’s important to keep a sharp blade in order to keep your mower cutting evenly and cleanly. Check the mower blade a few times during the mowing season. If the blade is bent or damaged, you can replace it using the steps in this video.
(0:00) Introduction
(0:26) Step 1: Disconnect the spark plug wire
(0:29) Step 2: Remove the blade
(1:03) Step 3: Install the new blade
(1:29) Step 4: Reconnect the spark plug wire
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The video includes these parts. Look up your model to make sure you get the right parts for your lawn mower.
Blade
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Transcript:
It’s important to keep a sharp blade in order to keep your mower cutting evenly and cleanly. Check the mower blade a few times during the mowing season. If the blade is bent or damaged, you can replace it using the steps in this video. Let the engine cool. Wear work gloves to protect your hands. Now, let’s get started. Disconnect the spark plug wire from the spark plug. Remove the fuel tank cap. Place a plastic bag over the fuel tank opening and reinstall the fuel tank cap to prevent gasoline from leaking out through the fuel tank cap vent. Tilt the mower back to lift the front wheels then secure the mower handle to your worktable to hold the mower steady. Wedge a block of wood between the mower blade and the deck to keep the blade from turning when you loosen the blade bolt. Loosen and unthread the blade bolt while holding the cutting blade to keep it from falling. Pull the blade, blade support and blade bolt off the crankshaft. Position the new blade, blade support and blade bolt on the crankshaft and hand-tighten the blade bolt into the crankshaft. Wedge a block of wood between the mower blade and the deck. Use a torque wrench to tighten the blade bolt. Remove the wood block from the cutting blade. Release the mower handle from the worktable and tilt the mower upright. Remove the plastic bag from the fuel tank opening and reinstall the fuel tank cap. Reconnect the spark plug wire to the spark plug.
