DIY- How to Tighten Belt on 2001 Subaru Legacy in Simple Steps with Tools You Have at Home

If you own a 2001 Subaru Legacy and have been experiencing a problem with your car’s belt, you’re not alone. A loose belt can cause serious problems, including reduced engine performance, damage to other parts of the car, and even accidents. Fortunately, you don’t have to visit the mechanic every time this happens. In this article, we will show you how to tighten the belt on your 2001 Subaru Legacy in just a few easy steps with the tools you have at home.

Tools Required

To start with the process, you’ll need a few basic tools that you probably already have in your toolbox. These may include:

  • Ratchet wrench with a socket that fits the bolt on the tensioner pulley
  • Socket set (to remove and replace bolts)
  • A flathead screwdriver (optional)

Steps to Tighten the Belt

Follow these simple steps to tighten the belt on your Subaru Legacy:

  1. Begin by locating the tensioner pulley on your engine. Refer to your car’s owner’s manual if you’re not sure where it is.

  2. Using a ratchet wrench with a socket that fits the bolt on the tensioner pulley, turn the bolt slightly to loosen the tension on the belt.

    Tip: To save time, you can also use a regular socket wrench or box-end wrench that fits the bolt on the tensioner pulley.

  3. With the tensioner pulley loosened, you can now adjust the belt tension. Do this by pulling the belt gently and moving it back and forth.

    Warning: Be careful not to pull the belt too hard, as it could snap or cause damage to other parts of the car.

  4. After adjusting the belt tension, use a socket/wrench to turn the tensioner pulley bolt in the opposite direction. This will tighten the belt around the pulleys.

    Tip: If you’re using a regular socket wrench, you may need to use a cheater bar or pipe to give you additional leverage.

  5. Once you’re satisfied with the belt tension, use a socket/wrench to tighten the bolt on the tensioner pulley securely.

    Warning: Don’t overtighten the bolt, as this can cause damage to the tensioner pulley or other parts of the car.

  6. Finally, start your car engine to confirm that the belt is not slipping and is properly tightened around the pulleys.

    Tip: If the belt seems too tight or too loose, repeat the above steps to adjust the tension accordingly.

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Precautions to Take

When tightening the belt on your 2001 Subaru Legacy, it is important to take some precautions. These include:

  • Before starting the process, make sure your car’s engine is cool to avoid burns and injury.
  • Wear protective gloves and goggles to avoid getting hurt by the engine or the belt.
  • Use tools with care to avoid damaging other parts of the car or causing injury to yourself.

Tips to Avoid a Similar Problem in the Future

To avoid a similar problem in the future and ensure your belt’s longevity, consider the following tips:

  • Have the belt checked regularly by a mechanic to ensure it’s in good condition before it wears out and needs replacing.
  • Keep your engine compartment clean to avoid dust and dirt buildup, which can cause the belt to slip.
  • Follow the manufacturer’s recommended maintenance schedule, including replacing the belt and other related components when they wear out.


Q: Can I use a screwdriver to adjust the tensioner pulley bolt instead of a socket/wrench?
A: Yes, a screwdriver can be used to adjust the tensioner pulley bolt, but it is not recommended as it can damage the bolt’s head or even break it off.

Q: How tight should the belt be after tightening?
A: The belt should be tight enough that it doesn’t slip but not so tight that it causes other problems. Refer to your car’s owner’s manual for the recommended tension for your specific make and model.

Q: How often should I check and adjust the belt tension?
A: It’s recommended to check your belt tension as part of your car’s regular maintenance routine, which could be every 6 months or so.

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In conclusion, a loose belt in your 2001 Subaru Legacy can cause serious problems, but tightening it doesn’t have to be a costly trip to the mechanic. With just a few basic tools and some care, you can do this yourself at home and avoid future problems. However, if you’re not confident about fixing the problem yourself, seek professional help instead of risking damage to your car or injury to yourself.

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Peter Banks

With years of experience as a professional mechanic and Subaru specialist, Peter is one of the most respected members of our team. He's written several articles on Subaru maintenance and repair, and his advice and tips are always practical and helpful. When he's not working on cars, he enjoys cooking and trying out new recipes.

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