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55 42 Inch Craftsman Riding Mower Drive Belt Diagram

Craftsman 48 inch mower deck belt diagram
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Welcome to our comprehensive guide on the 42-inch Craftsman riding mower drive belt diagram. If you are a proud owner of this powerful and versatile mower, you may find yourself in need of a drive belt replacement at some point. In this article, we will provide you with a detailed breakdown of the drive belt diagram, step-by-step instructions on how to replace the belt, and some helpful tips to ensure a smooth and successful replacement process. So, let's jump right in!

The Importance of the Drive Belt

Before we delve into the drive belt diagram, let's first understand the significance of the drive belt in your Craftsman riding mower. The drive belt is a crucial component that connects the engine to the transmission, enabling the mower to move forward or backward. Over time, the drive belt may wear out or become damaged, resulting in a loss of power or even a complete failure of the mower's propulsion system. Regular inspection and maintenance of the drive belt are essential to ensure optimal performance and longevity.

Step 1: Gather the Necessary Tools and Equipment

Before you begin the drive belt replacement process, it is important to gather all the necessary tools and equipment. Here's a list of what you'll need:

  • Socket wrench set
  • Adjustable wrench
  • Flathead screwdriver
  • New drive belt
  • Owner's manual

Step 2: Park the Mower on a Flat Surface and Disconnect the Spark Plug

Park your Craftsman riding mower on a flat surface and engage the parking brake. Locate the spark plug and disconnect it to prevent accidental engine start-up during the replacement process.

Step 3: Locate the Drive Belt

The drive belt on the Craftsman riding mower is located underneath the mower deck. To access it, you will need to remove the mower deck. Consult your owner's manual for specific instructions on how to remove the deck for your particular model.

Step 4: Study the Drive Belt Diagram

Before removing the old drive belt, take a moment to study the drive belt diagram provided in your owner's manual. This diagram will show you the correct routing of the belt around various pulleys and components. Understanding the diagram will make the installation of the new belt much easier.

Step 5: Loosen the Belt Tensioner

Using an adjustable wrench or socket wrench, locate the belt tensioner pulley and loosen it. This will relieve the tension on the drive belt and allow for easy removal.

Step 6: Remove the Old Drive Belt

With the tension released, carefully remove the old drive belt from the mower. Take note of the belt's routing as you remove it to ensure proper installation of the new belt.

Step 7: Install the New Drive Belt

Referencing the drive belt diagram, carefully thread the new drive belt around the various pulleys and components. Make sure the belt is properly seated and aligned with the grooves on the pulleys.

Step 8: Tighten the Belt Tensioner

Once the new drive belt is installed, use your adjustable wrench or socket wrench to tighten the belt tensioner. This will restore the tension on the belt and ensure proper operation.

Step 9: Reinstall the Mower Deck

With the new drive belt in place, it's time to reattach the mower deck. Follow the instructions in your owner's manual to properly reinstall the deck and secure it in place.

Step 10: Reconnect the Spark Plug

Before testing the mower, be sure to reconnect the spark plug. This will allow the engine to start and the mower to operate as intended.

Step 11: Test the Drive Belt

Start the engine and engage the mower's drive system to test the newly installed drive belt. Ensure that the mower moves smoothly and that the belt remains properly aligned on the pulleys.

Tips for a Successful Drive Belt Replacement

Replacing the drive belt on your 42-inch Craftsman riding mower can be a relatively straightforward process if you follow these helpful tips:

Tip 1: Regularly Inspect the Drive Belt

Regularly inspect the drive belt for signs of wear, cracking, or damage. Catching any issues early on can prevent more extensive damage and costly repairs down the line.

Tip 2: Keep the Drive Belt Clean

Keep the drive belt clean and free of debris to prevent premature wear. Regularly remove any dirt or grass clippings that may accumulate on the belt.

Tip 3: Use Genuine Craftsman Replacement Belts

When replacing the drive belt, always use genuine Craftsman replacement belts. These belts are specifically designed for your mower and will ensure optimal performance and durability.

Tip 4: Follow the Correct Routing

Take your time to study the drive belt diagram and ensure the new belt is routed correctly. Incorrect routing can lead to poor performance or even belt failure.

Tip 5: Seek Professional Help if Needed

If you are unsure or uncomfortable with replacing the drive belt yourself, it is always best to seek professional help. A certified technician can ensure the job is done correctly and safely.


Replacing the drive belt on your 42-inch Craftsman riding mower doesn't have to be a daunting task. By following the steps outlined in this guide and utilizing our helpful tips, you can successfully replace the drive belt and keep your mower running smoothly for years to come. Remember to consult your owner's manual for specific instructions and always prioritize safety throughout the process. Happy mowing!

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