Craftsman 46 Mower Deck Belt Diagram

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Mtd 13al78st299 247288861 2012 Parts Diagram For Mower Deck 46 Inch throughout size 1180 X 1527Mtd 13al78st299 247288861 2012 Parts Diagram For Mower Deck 46 Inch throughout size 1180 X 1527

Craftsman 46 Mower Deck Belt Diagram: A Step-by-Step Guide to Belt Replacement

Craftsman 46 Mower Deck Belt Diagram – Does your 46-inch mower deck belt show signs of wear and tear? Do you need a simple and practical guide to help you replace it? Look no further! This comprehensive article will walk you through replacing the belt on your Craftsman 46 mower deck. By following these step-by-step instructions, your mower will be up and running smoothly in no time.

Maintaining your Craftsman 46-inch mower deck is crucial for optimal performance and longevity. One essential aspect of maintenance is regular belt replacement. Over time, the belt can become worn, cracked, or damaged, affecting the deck’s performance and overall cutting quality. Recognizing the signs of a worn-out belt is essential. If you notice excessive vibration, poor cutting performance, or the strap slipping off the pulleys, it’s time to replace it.

Tools and Materials Needed

Before we dive into the belt replacement process, gather the necessary tools and materials to ensure a seamless experience:

  • New belt: Make sure to purchase a high-quality replacement belt that matches the specifications of your Craftsman 46 mower deck.
  • Phillips head screwdriver: Required for removing screws that secure the belt.
  • Adjustable wrench: For adjusting and tightening bolts during the process.
  • Socket wrench: Useful for loosening and tightening specific components.
  • Jack stands: To safely elevate the front of the mower.
  • Safety glasses: Protect your eyes from debris and potential hazards.
  • Gloves: Provide a secure grip and protect your hands during the process.

Now that we have everything let’s begin the belt replacement process.


  1. Park the mower on a level surface and set the parking brake: Choose a flat and stable surface to park your mower. Engage the parking brake to prevent any unwanted movement during the replacement process.
  2. Use the jack stands to support the front of the mower: Safely elevate the show using jack stands. This step ensures easy access to the belt area and ample working space.
  3. Remove the belt guard: Locate the belt guard covering the mower deck belt. Remove the screws securing the guard using your screwdriver and carefully set it aside. Take note of the position of each screw for easy reinstallation later.
  4. Locate the old belt: Identify the old belt’s routing and take a mental note or capture an image for reference during the installation of the new belt. This step helps avoid confusion and ensures proper alignment.
  5. Use the Phillips head screwdriver to remove the screws that secure the old belt: Carefully remove the screws that secure the old strap. Keep them in a safe place to prevent misplacement.
  6. Remove the old belt: Gently detach the old strap from the pulleys, following the routing you observed earlier. Take extra care not to damage any surrounding components during this process.
  7. Install the new belt: Begin by routing the new belt around the appropriate pulleys, following the diagram or image you captured earlier. Ensure proper alignment and fit.
  8. Secure the new belt with the screws: Insert and tighten the screws to secure the new belt in place. Double-check that the belt is properly aligned and tensioned.
  9. Replace the belt guard: Position it back onto the mower deck, aligning it with the screw holes. Using the previously removed screws, secure the guard in place. Ensure a snug fit without over-tightening.
  10. Lower the mower and remove the jack stands: Gently lower the mower back to the ground and remove the jack stands. Ensure stability before proceeding to the next step.
  11. Test the mower to ensure the belt works correctly: Start and engage the mower deck. Observe the belt’s movement and ensure it is functioning correctly. Listen for any abnormal noises or vibrations that may indicate a problem.


Congratulations! You’ve successfully replaced the belt on your Craftsman 46-inch mower deck. Following this step-by-step guide ensures that your mower will continue to deliver optimal cutting performance. Regular belt replacement is vital for maintaining your mower’s efficiency and lifespan.

For your convenience, we recommend visiting to explore a selection of replacement belts suitable for your Craftsman 46 mower deck.

Thank you for reading this comprehensive Craftsman 46 Mower Deck Belt replacement guide. We hope this article has been informative and helpful in addressing your needs. Enjoy the enhanced performance of your Craftsman mower and happy mowing!