How to Replace a Craftsman Zero-Turn Riding Mower Cutting Blade
This video from Sears PartsDirect shows how to replace a worn-out cutting blade in some Craftsman zero-turn riding mowers. Worn or damaged mower blades won’t cut the grass well. Inspect your mower blades regularly and replace a damaged blade by following the steps in this video.
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Cutting blade
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Transcript:
Worn or damaged mower blades won’t cut the grass well. Inspect your mower blades regularly and replace a damaged blade by following the steps in this video. Before you begin, wear work gloves to protect your hands. Disconnect the spark plug wires and make sure that the parking break is set. Lower the mower deck to the lowest cutting position. Remove the left pulley cover on the mower deck. Push in the blade belt idler pulley and roll the blade drive belt off the left blade pulley. Reach under the rear of the mower frame and remove the blade drive belt from the electric clutch. Disconnect the mower deck mounting pins and release the hanging brackets from the mower deck. Push the mower deck slightly forward and release it from the front bracket. Push the mower deck out from under the mower frame. Flip the mower deck upside down to access the mower blade. Wedge a block of wood between the cutting blade and the deck to keep the blade from turning. Remove the cutting blade mounting bolt and pull the cutting blade off. The blade may be rusted and hard to turn. Position the new cutting blade on the shaft and install the mounting bolt. Tighten the bolt to 50 ft-lbs with a torque wrench. Flip the mower deck right side up. Push the mower deck under the mower frame. Reinstall the mower deck on the front bracket. Reinstall the mower deck hanging brackets and secure them with the mounting pins. Reinstall the blade drive belt onto the electric clutch. Push in the blade belt idler pulley and roll the blade belt back onto the left blade pulley. Reinstall the pulley cover. Reconnect both spark plug wires.