Whether your string is worn out, broken, dirty, or you're simply installing a new one, learning how to put a string on a yo-yo is one of the most important skills every player should know.

Once you understand the process, replacing a yo-yo string only takes a few seconds. In this guide, you'll learn how to install a new string, when it's time to replace an old one, how to get the right string length, and how to create a slip knot so your yo-yo fits comfortably on your finger.

I'm Gentry Stein, a 2× World Yo-Yo Champion, and I've taught thousands of players how to set up and maintain their yo-yos. I'll walk you through the exact process I teach beginners so you can get back to playing as quickly as possible.

Quick Answer: How Do You Put a String on a Yo-Yo?

To put a string on a yo-yo, open the straight end of the string by untwisting the strands, slide it over the yo-yo's axle, and allow it to twist back together. Once the string is attached, adjust it to the correct length and create a slip knot so it fits securely on your finger.

This process works the same way for almost all modern responsive and unresponsive yo-yos. If you're not sure which type of yo-yo you have, check out our Responsive vs Unresponsive Yo-Yo Guide.

The video below walks you through the entire process step by step. If you'd rather follow written instructions, keep scrolling for the complete tutorial, common mistakes to avoid, FAQs, and additional setup tips.

When Should You Replace a Yo-Yo String?

Replace your yo-yo string when it becomes frayed, dirty, worn out, or starts affecting performance. Waiting too long can cause the string to break unexpectedly during play.

Unlike your yo-yo, which can last a long time with proper care and maintenance, yo-yo strings are designed to be replaced regularly.

As a string wears down from regular use, the fibers become compressed and the strands become harder to separate.

The string may also feel rougher and less smooth during play and become more difficult to manage. This can reduce control, make tricks feel less consistent, and make it harder to learn new tricks.

Before replacing your string, make sure the problem isn't simply string tension. Twists, loops, tangles, and "spaghetti string" are often caused by excess string tension and can usually be fixed without replacing the string.

If you've already adjusted the string tension and the string still feels rough, worn out, or performs poorly, it's probably time for a new string. 

Personally, I prefer 100% polyester strings because they offer a great balance of performance, longevity, and feel for players of all skill levels.

DNA String was specifically created to minimize excess string tension, helping players spend less time fixing twists and tangles and more time practicing tricks.

DNA String can be used on any modern yo-yo, but it was originally designed for the DNA Trick. If you'd like to learn more about the trick that inspired its creation and has generated over a billion views across social media, check out our Ultimate Guide to the DNA Yo-Yo Trick.

If you're unsure whether it's time to replace your yo-yo string, here are some common signs to look for:

Signs It's Time to Replace Your Yo-Yo String

• The string looks frayed, fuzzy, dirty, or discolored.
• The string feels rough, stiff, or worn out.
• The strands are difficult to separate when you untwist the string.
• Your yo-yo is not performing as well as it normally does, making tricks feel less smooth or consistent.

A fresh yo-yo string slides more smoothly across your hands, provides better control, and helps keep your yo-yo performing at its best. This can make tricks feel more consistent and easier to learn, especially as you start progressing to more advanced tricks.

How often you replace your string depends on how much you practice and your personal preferences. Some players change their string daily, while others may only need a new string every few days, once a week, or even longer if they play less frequently.

How to Remove a Yo-Yo String

Before installing a new string, you'll need to remove the old one. Ideally, you want to replace your yo-yo string before it becomes so worn out that it breaks during play. Removing an old string only takes a few seconds.

Start by pinching the string a few inches above the yo-yo. Then gently twist the string. As you twist it, you'll notice the two parts of the string begin to separate and open up. Once the opening is large enough, simply slide the yo-yo off the string. After the old string has been removed, you're ready to install a new one.

Most players remove and replace yo-yo strings without taking the yo-yo apart. However, some beginners find it easier to unscrew the yo-yo first so they can clearly see how the string attaches to the axle.

This can also help if the string has become tangled, knotted, or wrapped around the axle.  If you do unscrew your yo-yo, be careful not to overtighten it when putting it back together.

If you'd like to see the entire process in action, watch the video below.

The video above shows the complete process from start to finish. If you'd like a detailed written breakdown, follow the step-by-step guide below.

Step-by-Step Guide: How to Put a String on a Yo-Yo

Follow these simple steps to install a new yo-yo string correctly.

Step 1: Grab the String From Both Ends

Grab your new yo-yo string from both ends. You'll notice that one side has a knot with a loop, while the other side is straight.

It's really common to think that the side with the loop goes around the yo-yo, but it's actually the straight end that attaches to the yo-yo.

Step 2: Drop the Side With the Loop

Drop the side with the loop and focus on the straight end. This is the side that attaches to the yo-yo.

This is the side that attaches to the yo-yo, not the looped end.

Step 3: Open the String by Untwisting It

Gently untwist the string to create an opening. It helps to place your pointer finger into the opening while you continue untwisting the string. This keeps the opening from closing while you work.

As the opening gets larger, slide your thumb into it as well. Using both your finger and thumb makes it much easier to keep the string open.

Step 4: Slide the String Over the Yo-Yo

Once the string is open, slide it over the yo-yo so it sits around the axle.

Step 5: Let the String Twist Back Together

From there, simply release the string and allow it to twist back together on its own.

How to Get the Right Yo-Yo String Length

Once your new string is installed, you'll want to make sure it's the correct length before winding the yo-yo and making your first throw.

The easiest way to measure a yo-yo string is the elbow method. Let the yo-yo hang all the way to the ground, then measure the string up to your elbow. Pinch the string at that point, tie a new loop, and cut off the excess string. This creates a balanced setup that works well for most players.

You'll also hear players refer to belly button height as a good starting point. Both methods create a similar balanced string length for most players.

For a complete breakdown of string length, measuring methods, and common mistakes, see our full Yo-Yo String Length Guide.

How to Make a Yo-Yo Slip Knot

After cutting your string to the correct length, create a slip knot so the yo-yo can be attached securely to your finger.

This adjustable finger loop lets you tighten or loosen the string for a comfortable fit while you play.

Step 1: Put the String Through the Loop

Take a section of the straight part of the string and pass it through the loop at the end of the string.

Step 2: Pull the String Through

Pull the string through the loop until it creates a larger adjustable loop. This adjustable loop is your slip knot.

Step 3: Place the Slip Knot on Your Middle Finger

Put the slip knot on the middle finger of your throw hand.

I personally like to place the string between my first and second knuckle because it feels comfortable and gives me better control while throwing.

Common Mistakes When Replacing a Yo-Yo String

Here are a few common mistakes to avoid when replacing a yo-yo string.

Opening the Wrong End of the String

Many beginners assume the looped end goes on the yo-yo, but it's actually the straight end of the string that should be opened and placed around the yo-yo. The looped end is used later to create a slip knot for your finger.

Cutting the String Before Measuring It

Always measure your string before cutting it. If the string is too long, you can always shorten it later. If you cut it too short, you'll need to start over with a new string.

Not Opening the String Wide Enough

If you're struggling to get the string onto the yo-yo, try untwisting it further and using your finger and thumb to hold the opening apart. This makes it much easier to slide the string over the yo-yo.

Putting Your Finger Through the Original Loop Instead of Creating a Slip Knot

Many beginners place their finger directly through the original loop at the end of the string. Instead, make a slip knot so the string can tighten comfortably around your finger and stay secure while you play.

Over-tightening the Yo-Yo

If you unscrew your yo-yo while changing the string, make sure you don't overtighten it when putting it back together. Tightening the yo-yo too much can damage the threads and, in some cases, crack plastic yo-yos. Tighten the yo-yo until it feels snug, then stop.

On the other hand, if the yo-yo is too loose, it can wobble during play or come apart while you're using it.

Continuing to Use a Worn-Out String

Don't wait until your string breaks to replace it. If your string becomes frayed, dirty, rough, or starts affecting performance, it's time for a new one.

A fresh string can improve control, make tricks feel smoother, and help you learn new tricks more consistently.

What to Learn Next

Now that you know how to put a string on a yo-yo, identify when a string needs to be replaced, adjust the correct string length, and make a slip knot, you've learned some of the most important setup and maintenance skills every yo-yo player should know.

The next step is learning how to wind and throw a yo-yo correctly. These are the skills you'll use every time you pick up your yo-yo and the foundation for nearly every trick you'll learn in the future.

Learning how to install and replace a string is one of the first maintenance skills every yo-yo player should learn. As you continue your yo-yo journey, you'll also learn how to care for bearings, response pads, and other parts of your yo-yo.

Taking care of your equipment helps keep your yo-yo performing at its best. For a complete breakdown, check out our How to Care and Maintain Your Yo-Yo.

It's also important to remember that not all yo-yos perform the same. A quality beginner yo-yo can make learning easier, while a poorly designed yo-yo can make even basic skills feel frustrating.

If you're not sure where to buy a yo-yo or what type of yo-yo is right for your skill level, check out our guides on Where to Buy a Yo-Yo Near Me and What Is the Best Yo-Yo?

If your yo-yo isn't returning to your hand the way you expect after learning how to throw it, be sure to check out our guide on Why Won't My Yo-Yo Come Back Up?

From beginner to world champion, every yo-yo player starts with the fundamentals. Master the basics and you'll be surprised how far those small skills can take you.

And just remember to always: Show up. Never give up. Lift others up.

Frequently Asked Questions About Putting a String on a Yo-Yo

Here are some of the most common questions beginners have about how to put a string on a yo-yo, replace a yo-yo string, adjust string length, and create a slip knot.

How do you string a yo-yo?

To string a yo-yo, start by opening the straight end of the string by untwisting the strands. Once the opening is large enough, place the string around the yo-yo's axle and allow it to twist back together naturally. After the string is installed, adjust it to the correct length and create a slip knot so it fits comfortably and securely on your finger.

How do you put a new string on a yo-yo?

To put a new string on a yo-yo, first remove the old string by twisting it open and sliding it off the yo-yo. Next, open the straight end of the new string, place it around the axle, and allow it to twist back together. Once the string is attached, adjust it to the correct length and create a slip knot before playing.

How do you restring a yo-yo?

Restringing a yo-yo simply means removing the old string and replacing it with a new one. Modern yo-yo strings are designed to be opened and placed around the yo-yo's axle rather than tied directly to the yo-yo. The entire process usually takes less than a minute once you know the steps.

How do you tie a yo-yo string?

Modern yo-yo strings are not actually tied directly to the yo-yo or your hand. Instead, the straight end of the string is opened and placed around the yo-yo's axle. The other end is adjusted to the correct length, made into a slip knot, and placed on your middle finger for a secure and comfortable fit.

How do you make a yo-yo slip knot?

To make a yo-yo slip knot, pass a section of the straight part of the string through the loop at the end of the string and pull it through to create a larger adjustable loop. Place the slip knot on the middle finger of your throw hand and tighten it until it feels comfortable and secure.

Which end of a yo-yo string goes on the yo-yo?

The straight end of the string is the side that goes on the yo-yo. Open this end by untwisting the strands, place it around the yo-yo's axle, and let it twist back together naturally. The looped end does not go on the yo-yo. Instead, it is used to create a slip knot for your finger.

Do you need to unscrew a yo-yo to change the string?

No. Most modern yo-yos allow you to remove and install strings without taking the yo-yo apart. However, some players prefer to unscrew the yo-yo so they can clearly see how the string attaches to the axle. Taking the yo-yo apart can also help if the string has become tangled, knotted, or wrapped around the axle. If you do unscrew your yo-yo, be careful not to overtighten it when putting it back together, leave it too loose, or misplace any parts.

How often should you replace a yo-yo string?

There is no set schedule for replacing a yo-yo string. Some professional players practicing for competitions may replace their string every few hours, while casual players may use the same string for weeks or even longer. Replace your string whenever it becomes worn, dirty, frayed, or starts affecting performance.

Can you reuse an old yo-yo string?

Yes, you can reuse a yo-yo string if it is still clean, smooth, and performing well. However, once a string becomes worn, dirty, frayed, rough, or starts affecting performance, it's usually time for a replacement. A fresh string slides more smoothly across your hands, provides better control, and helps keep your yo-yo performing at its best.

Can you use any string on a yo-yo?

Most modern yo-yos can use the same types of yo-yo strings, but not all strings perform the same. The material, thickness, and quality of the string can have a big impact on how your yo-yo feels and performs. Personally, I prefer high-quality 100% polyester strings because they offer a great balance of performance, durability, and feel for players of all skill levels.

What length should a yo-yo string be?

For most players, a string length around elbow or belly-button height provides a good balance of control and space for tricks. See our complete Yo-Yo String Length Guide for a detailed explanation.

Why won't my new yo-yo string stay on?

If a new yo-yo string won't stay on the yo-yo, make sure you've opened the straight end of the string, placed it fully around the yo-yo's axle, and allowed it to twist back together naturally. If the string is not fully seated around the axle, it can come off during play.

If the string won't stay on your finger, make sure you've created a slip knot rather than placing your finger directly through the original loop. The slip knot should tighten comfortably around your middle finger and stay secure while you play.