How to Re-String a Stihl FS 38 Weed Trimmer: Step-by-Step Guide

Have you ever found yourself frustrated with your old, worn-out weed trimmer string? It can be a real hassle to constantly have to re-string the trimmer, especially when you’re in the middle of a project and you just want to get the job done. But fear not, because today we’re going to show you how to re-string your Stihl FS 38 weed trimmer with ease. Think of re-stringing your trimmer like putting on a fresh pair of sneakers.

Just like worn-out shoes slow you down and can lead to discomfort, dull trimmer string can inhibit the efficiency of your trimmer and make your job more difficult. So, just like you would replace your worn-out shoes, it’s important to replace your trimmer string regularly for optimal performance. To get started, you’ll need a few basic tools: a new trimmer line, a pair of scissors or pruning shears, and a flat surface to work on.

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Before beginning, make sure to turn off the trimmer and disconnect it from the power source to avoid any accidents. Once you’ve gathered your tools and ensured the trimmer is powered off, it’s time to remove the old trimmer line. Locate the head of the trimmer, which is typically on the bottom part of the trimmer near the cutting guard.

Look for a small hole or tab on the head of the trimmer – this is where you’ll insert the new line. Using your scissors or pruning shears, cut off any remaining trimmer line, being careful not to damage the head of the trimmer. Once the old line is removed, it’s time to prepare your new trimmer line for installation.

Take your new trimmer line and unwind a length of line that is appropriate for your trimming needs. The specific length will depend on the size of your trimmer and the type of vegetation you’ll be cutting. Generally, a length of 8-10 feet should be sufficient for most tasks.

Now it’s time to insert the new line into the head of the trimmer. Feed one end of the line into the hole or tab on the head of the trimmer, making sure it goes all the way through and comes out the other side. Pull the line through until both ends are of equal length.


If you’re a proud owner of a Stihl FS 38 weed trimmer, you may find yourself needing to re-string it from time to time. Don’t worry, though, because I’m here to help you through the process. Re-stringing your trimmer is a fairly simple task that anyone can do with a little patience and the right instructions.

By following these steps, you’ll have your Stihl FS 38 trimmer up and running in no time. So let’s dive in and get started on re-stringing your Stihl FS 38 weed trimmer!

Overview of the Stihl FS 38 Weed Trimmer

Stihl FS 38 Weed Trimmer, Overview, Introduction Are you tired of battling stubborn weeds that just won’t quit? Well, say goodbye to those pesky plants because I’ve got the ultimate solution for you – the Stihl FS 38 Weed Trimmer. This revolutionary tool is designed to make your weed-whacking tasks a breeze. With its powerful engine and precise cutting ability, the Stihl FS 38 will quickly become your go-to tool for keeping your yard looking pristine.

But before we dive into the nitty-gritty details, let me give you a brief introduction to this game-changing weed trimmer.

how to re-string stihl fs 38 weed trimmer

Why You Should Learn to Re-String Your Trimmer

trimmer, re-string, learning, benefits

Tools and Materials needed

If you own a Stihl FS 38 weed trimmer, at some point you may need to re-string the trimmer head. Whether the string has worn out or broken, re-stringing the trimmer is a simple process that can be done at home with a few basic tools and materials. To re-string your Stihl FS 38 trimmer, you will need a few key items.

First and foremost, you will need replacement trimmer line. Trim lines come in various thicknesses, so it’s important to choose the correct size for your trimmer. You will also need a pair of needle-nose pliers or a small screwdriver to assist in removing the old trim line and attaching the new line.

Finally, you will need a sturdy work surface and some time to complete the task. With these tools and materials in hand, you’ll be well-equipped to re-string your Stihl FS 38 weed trimmer and get it back in action.

List of Tools

List of Tools and Materials Needed When it comes to tackling a DIY project, having the right tools and materials is essential for success. Whether you’re a seasoned DIY expert or a beginner, having the right equipment can make all the difference in the world. So, what tools and materials do you need to get started? Here’s a handy list to help you out.

First and foremost, you’ll need a good set of basic hand tools. This includes items like screwdrivers, wrenches, pliers, and hammers. These tools will come in handy for a wide range of projects, from assembling furniture to fixing a leaky pipe.

Next, you’ll want to stock up on power tools. A cordless drill is a must-have for any DIY enthusiast, and it can be used for a variety of tasks, such as drilling holes and driving screws. Other power tools you may want to consider include a circular saw, jigsaw, and orbital sander.

In addition to tools, you’ll also need a selection of materials. This will vary depending on the type of project you’re working on, but some common materials include wood, screws, nails, and adhesive. It’s a good idea to keep a variety of different sizes and types of screws and nails on hand, as you never know what you may need.

Safety is also an important consideration when working on DIY projects. Make sure to have safety goggles, gloves, and a dust mask to protect yourself from any potential hazards. It’s always better to be safe than sorry, so don’t skip out on safety gear.

Lastly, having a sturdy workbench or table to work on is essential. This will provide you with a stable surface to complete your projects and make your work much easier. By having the right tools and materials on hand, you’ll be well-equipped to tackle any DIY project that comes your way.

List of Materials

For any DIY project, having the right tools and materials is essential. When it comes to building or repairing something, you want to make sure you have everything you need before you start. Here is a list of tools and materials that you might need:

Hammer: A good quality hammer is a must-have for any DIY enthusiast. From hanging pictures to driving nails, a hammer is an essential tool that you’ll reach for time and time again.

Screwdriver Set: A set of screwdrivers with different sizes and types of heads is crucial for any project that involves screws. Whether it’s assembling furniture or fixing a loose hinge, a screwdriver set is a must-have tool.

Power Drill: A power drill is an excellent investment for any DIYer. It can be used for a wide range of tasks, from drilling holes to driving screws. Look for a drill that comes with different speed settings and a variety of drill bits.

Tape Measure: Accurate measurements are essential for any DIY project. A tape measure allows you to measure distances, lengths, and widths accurately.

Level: A level is crucial for ensuring that your projects are straight and level. Whether you’re hanging a picture or installing shelves, a level will help you achieve professional-looking results.

Step-by-Step Guide

If you’re the proud owner of a Stihl FS 38 weed trimmer and it’s time to re-string it, don’t worry! I’ve got a step-by-step guide that will make the process easy and stress-free. First, make sure you have the right replacement string. The Stihl FS 38 uses a specific type of trimmer line, so be sure to check your manual or consult with your local hardware store to get the right one.

Once you have the correct string, turn off your trimmer and disconnect the spark plug to ensure your safety. Next, remove the trimmer head by unscrewing it counterclockwise. Now, take out the spool and remove any remaining string.

Clean out any debris or tangled string from the spool, and then wind the new trimmer string onto it following the arrow indicators. Be sure to wind the string tightly and evenly to prevent any tangles or jams. Once the string is wound, feed it through the eyelets on the trimmer head and reattach the head by screwing it back on clockwise.

Finally, reattach the spark plug and give your trimmer a test run to make sure the string is feeding properly. With this step-by-step guide, you’ll be re-stringing your Stihl FS 38 weed trimmer like a pro in no time at all!

Step 1: Prepare the Trimmer

trimmer preparation

Step 2: Remove the Old Trimmer Line

When it comes to replacing the trimmer line on your weed eater, the first step is to remove the old line. This might seem like a simple task, but it’s important to do it correctly to ensure that you can easily install the new line later on. To start, make sure your trimmer is turned off and disconnected from any power sources.

Then, locate the trimmer head, which is the part of the weed eater that holds the trimmer line. You may need to remove a cap or cover to access the trimmer head. Once you have access, hold the trimmer head firmly in place and rotate the spool counterclockwise.

This will allow you to remove the spool from the trimmer head. Once the spool is out, you can simply pull the old trimmer line out and discard it. Make sure to clean any debris or tangled line from the trimmer head before moving on to the next step.

Step 3: Measure and Cut the New Trimmer Line

trimmer line, measure, cut, step-by-step guide

Step 4: Insert the New Trimmer Line

In this step-by-step guide, we will walk you through the process of inserting new trimmer line into your trimmer. Once you have removed the old trimmer line and cleaned the spool, you are ready to insert the new line. To start, take the end of the trimmer line and insert it into one of the holes on the spool.

Make sure to insert it all the way through so that it comes out on the other side of the spool. Next, pull the line through until there is an equal amount of line on each side of the spool. This will ensure that both sides of the line will be used when trimming.

Now, locate the line guides on the trimmer head. These guides will hold the line in place as you use the trimmer. Carefully thread the line through each guide, making sure that it is securely in place.

Once the line is threaded through the guides, you can pull the excess line through the guide to tighten it. This will prevent the line from coming loose while you are trimming. Finally, repeat these steps for the other side of the spool.

Insert the trimmer line into the second hole on the spool and thread it through the guides. Again, make sure that the line is securely in place. And that’s it! You have successfully inserted the new trimmer line into your trimmer.

Now you can get back to trimming and maintaining your lawn. Remember to always use caution when operating your trimmer and follow all safety guidelines.

Step 5: Adjust the Line Length

In order to create visually pleasing and easy to read text, it’s important to adjust the line length. Line length refers to the number of characters or words in a line of text. When it comes to line length, balance is key.

If the lines are too short, it can make the text appear fragmented and disjointed. On the other hand, if the lines are too long, it can make the text difficult to read and can strain the reader’s eyes. To find the right line length, it’s important to consider factors such as the font size, the medium on which the text will be displayed, and the reading distance.

Generally, a line length of 45-75 characters per line is considered optimal for readability. However, this can vary depending on the specific requirements of the text. By adjusting the line length, you can enhance the readability and visual appeal of your text, making it easier for readers to engage with your content.

Step 6: Reassemble and Test the Trimmer

gas trimmer, reassembly, testing, step-by-step guide, troubleshoot Now that you have successfully cleaned and inspected all the parts of your gas trimmer, it’s time to put everything back together. Assemble the drive shaft by sliding it back into the engine housing and reattach the screws or bolts that hold it in place. Next, reattach the throttle cable and make sure it is securely connected.

Carefully put the trimmer head back on, making sure it is aligned properly with the drive shaft. Tighten any screws or bolts that hold the trimmer head in place. Finally, reattach the spark plug and reconnect the fuel lines.

Now that the trimmer is reassembled, it’s time to put it to the test. Start by filling the fuel tank with fresh, clean gasoline. Check the oil level and add more if needed.

Prime the engine by pressing the primer bulb several times until you see fuel flowing through the fuel lines. Set the choke to the start position and pull the starter cord to start the engine. Once the engine is running, let it warm up for a few minutes before engaging the trimmer head.

Make sure the head spins smoothly without any hesitation or unusual noises. Test the throttle response by squeezing the trigger and releasing it. The engine should respond quickly and smoothly.

If you encounter any issues during the reassembly or testing process, refer back to the troubleshooting section of your trimmer’s manual. Check that all the parts are properly connected and aligned. If necessary, disassemble and reassemble the trimmer again to ensure everything is in the right place.

Tips and Troubleshooting

If you’re having trouble with your Stihl FS 38 weed trimmer and need to replace the string, don’t worry – it’s a relatively simple process. First, make sure the trimmer is turned off and the spark plug is disconnected. Then, locate the head of the trimmer, which houses the cutting string.

There are usually two small tabs on the side of the head that need to be pressed down simultaneously to release the spool. Once the spool is released, you can remove the old string and replace it with a new one. It’s important to note that the cutting string should be the correct length and thickness for your trimmer.

After threading the new string through the holes in the head, reattach the spool and secure it in place. Finally, reconnect the spark plug and test the trimmer to ensure the string is working properly. With these simple steps, you’ll have your Stihl FS 38 weed trimmer back in action in no time.

Common Problems with Trimmer Line

trimmer line, problems with trimmer line, troubleshooting trimmer line, tips for using trimmer line

Tips for Smooth Line Replacement

line replacement


So there you have it, the not-so-secret method to re-stringing your Stihl FS 38 weed trimmer. By following these steps, you can be confident that your trimmer will be ready to take on even the peskiest of weeds. And just like a good magician, you’ll have everyone wondering how you managed to make your trimmer look brand new again.

So go ahead, embrace your inner Houdini and string away!

Review of the Steps

“Tips and Troubleshooting for Reviewing the Steps” When it comes to reviewing the steps, there are a few tips and tricks that can help make the process smoother and more efficient. First and foremost, it’s important to stay organized. Create a checklist or a to-do list to help keep track of what steps you have already reviewed and which ones still need to be checked off.

This will help ensure that you don’t miss any important steps along the way. Another important tip is to take breaks. Reviewing steps can be a tedious task, and it can be easy to start losing focus or becoming overwhelmed.

Taking regular breaks can help refresh your mind and prevent burnout. Use this time to stretch, grab a snack, or do something you enjoy to recharge your mental energy. If you find yourself getting stuck or confused on a particular step, don’t hesitate to seek help.

Whether it’s asking a colleague, searching online for additional resources, or reaching out to a mentor, getting a fresh perspective can often provide new insights and solutions to overcome any problems you may be facing. Lastly, don’t forget to celebrate your progress. Reviewing steps can sometimes feel like a never-ending process, especially if there are a lot of steps involved.

Take a moment to recognize and appreciate the progress you have made so far. Celebrate small victories and milestones along the way to stay motivated and engaged. In conclusion, reviewing steps can be a complex task, but with these tips and troubleshooting strategies, you can make the process more manageable and efficient.

Stay organized, take breaks when needed, seek help when necessary, and celebrate your progress. Reviewing steps is an important part of any task or project, and by following these tips, you’ll be well on your way to success.

Importance of Regular Trimmer Maintenance

regular trimmer maintenance, tips and troubleshooting


How often should I re-string my Stihl FS 38 weed trimmer?
It is recommended to re-string your Stihl FS 38 weed trimmer whenever the trimmer line becomes worn or breaks. Regular inspections of the trimmer line will help you determine when it needs to be replaced.

What type of trimmer line should I use for my Stihl FS 38 weed trimmer?
Stihl recommends using their own brand of trimmer line, specifically the Stihl Polycut line. However, other brands of trimmer line that meet the proper specifications can also be used.

How do I re-string my Stihl FS 38 weed trimmer?
To re-string your Stihl FS 38 weed trimmer, follow these steps: 1. Turn off the engine and unplug the spark plug wire. 2. Remove any remaining trimmer line from the spool. 3. Cut a length of trimmer line that matches the recommended diameter for your trimmer. 4. Insert one end of the trimmer line into the small hole on the spool. 5. Wind the trimmer line tightly and evenly around the spool, following the direction of the arrow on the spool. 6. Leave a small section of trimmer line protruding from the spool to ensure proper cutting. 7. Insert the loose end of the trimmer line into the notch on the spool, and secure it in place. 8. Place the spool back into the trimmer head and snap the cover back on. 9. Reconnect the spark plug wire and start the engine to test the trimmer.

How do I prevent the trimmer line from breaking on my Stihl FS 38 weed trimmer?
To prevent the trimmer line from breaking on your Stihl FS 38 weed trimmer, follow these tips: – Avoid cutting against hard surfaces, such as sidewalks or rocks, as this can cause the line to wear down or break. – Use the appropriate cutting technique, angling the trimmer head to achieve the best cutting results without putting excessive strain on the line. – Regularly inspect the trimmer line for signs of wear or damage, and replace it as needed. – Store your trimmer in a clean and dry place to prevent the line from deteriorating over time.

Can I use a thicker trimmer line on my Stihl FS 38 weed trimmer for heavier vegetation?
Stihl recommends using the appropriate diameter trimmer line for your Stihl FS 38 weed trimmer, as using a thicker line may put extra strain on the engine and trimmer head. It is always best to follow the manufacturer’s recommendations to ensure optimal performance and longevity of your equipment.

How do I maintain the spool on my Stihl FS 38 weed trimmer?
To maintain the spool on your Stihl FS 38 weed trimmer, periodically remove it from the trimmer head and clean it of any debris or grass clippings. This will help ensure smooth operation of the trimmer line and prevent clogs or tangling.

What is the recommended length for the trimmer line on my Stihl FS 38 weed trimmer?
The recommended length for the trimmer line on the Stihl FS 38 weed trimmer will vary depending on the specific model and application. It is best to consult the owner’s manual or contact Stihl directly for the most accurate information.

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