How to Change a Husqvarna Weed Eater Head? Simple DIY Replacement Guide

Introduction

Changing a Husqvarna weed eater head doesn’t have to be a frustrating experience. Whether you’re dealing with a worn-out string, tangled line, or simply want to upgrade to a different cutting system, knowing how to change a Husqvarna weed eater head can save you time, money, and trips to the repair shop. This comprehensive guide walks you through every step of the process, from identifying your model to installing your new head with confidence.

Table of Contents

• Why Replace Your Weed Eater Head?
• Tools You’ll Need
• Identifying Your Husqvarna Model
• Types of Replacement Heads Available
• Preparation Steps Before Starting
• Removing the Old Head
• Installing the New Head
• Loading String Into Bump-Feed Heads
• Testing Your New Head
• Troubleshooting Common Issues
• Maintenance Tips for Longevity
• When to Call a Professional
• Replacement Head Comparison
• Frequently Asked Questions
• Conclusion

Why Replace Your Weed Eater Head?

Before diving into the technical aspects of how to change a Husqvarna weed eater head, it’s important to understand why replacement becomes necessary. Here are the most common reasons:

• Worn String: Over time, the cutting line wears down and becomes too short for effective trimming
• Tangled Line: String that’s wrapped around the head incorrectly or crossed during reloading
• Damage: Impact with rocks, concrete, or other debris can crack or break the head housing
• Upgrades: Switching from automatic feed to manual feed systems for better control
• Performance Issues: Inconsistent line feeding or frequent line breakage

Understanding these reasons helps you identify when it’s time to tackle this DIY project rather than continuing to struggle with an inadequate cutting system.

Tools You’ll Need

One of the advantages of learning how to change a Husqvarna weed eater head is that you likely already have most of the required tools. Here’s what you’ll need:

• Flathead screwdriver (medium size)
• Phillips head screwdriver (if your model uses Phillips screws)
• Needle-nose pliers (helpful but not essential)
• Clean cloth or rag
• Small container for holding screws and small parts
• New replacement head compatible with your Husqvarna model
• String for refilling (if installing a bump-feed head)

Having these tools ready before you start will make the process much smoother and prevent you from having to pause midway through the job.

Identifying Your Husqvarna Model

Husqvarna manufactures numerous models of weed eaters, each with slightly different head attachment mechanisms. To ensure you purchase the correct replacement head, you’ll need to identify your specific model number. Here’s how:

1. Check the Engine Housing: Look for a metal plate or sticker on the engine housing that lists the model number
2. Consult Your Manual: The owner’s manual typically displays the model number on the cover or first few pages
3. Visit Husqvarna’s Website: Use their model lookup tool by entering information about your unit
4. Contact Customer Service: If you can’t find the information yourself, Husqvarna’s customer service can help identify your model

Common Husqvarna weed eater model series include the 120V, 128LD, 128RX, and 326LD series. Each may require different replacement heads or installation procedures.

Types of Replacement Heads Available

When researching how to change a Husqvarna weed eater head, it’s important to know that different head types serve different purposes. Here are the main options:

Automatic Feed Heads

These heads automatically release more string when you tap the ground while operating. They’re convenient but may require more maintenance.

Bump Feed Heads

Also known as semi-automatic heads, these require you to manually bump the head against the ground to feed more line. They offer good control and are reliable.

Fixed Line Heads

These use pre-cut pieces of line that don’t require feeding. They’re simple to operate but less versatile for different trimming tasks.

Blade Attachments

For heavy-duty clearing work, some Husqvarna models accept metal blade attachments instead of string heads.

Choosing the right type depends on your trimming needs, skill level, and the type of vegetation you’re dealing with regularly. (See Also:How To Reload A Stihl Weed Eater)

Preparation Steps Before Starting

Proper preparation is key to successfully completing how to change a Husqvarna weed eater head. Follow these steps before beginning:

1. Safety First: Always disconnect the spark plug wire to prevent accidental starting
2. Clean the Area: Remove any debris, grass clippings, or dirt around the head area
3. Work in Good Lighting: Ensure you have adequate lighting to see small parts and screws clearly
4. Gather All Tools: Have everything you need within reach to avoid interruptions
5. Read Instructions: Review both your old head’s removal process and your new head’s installation guide

Taking these preparatory steps ensures a smooth installation process and reduces the risk of losing small components or making mistakes.

Removing the Old Head

The removal process varies depending on your Husqvarna model and head type, but here are the general steps for how to change a Husqvarna weed eater head:

For Screw-On Heads

1. Locate the retaining screws that secure the head to the gearbox housing
2. Using the appropriate screwdriver, remove all screws (typically 2-4 screws)
3. Gently lift the old head straight up off the gearbox
4. Clean any debris from the gearbox mounting surface

For Quick-Release Heads

1. Locate the quick-release button or lever on the head assembly
2. Press or flip the release mechanism while holding the head steady
3. Pull the head upward to detach it from the gearbox
4. Clean the mounting area thoroughly

Important Note: Some models may have additional retaining clips or tabs that need to be released. Consult your owner’s manual if you encounter resistance during removal.

Installing the New Head

Once the old head is removed, follow these steps to install your new replacement head:

1. Align the Head: Position the new head so the mounting holes align with those on the gearbox
2. Secure with Screws: Insert and tighten all mounting screws firmly but don’t overtighten
3. Check Alignment: Ensure the head sits flush against the gearbox housing
4. Verify Security: Gently try to wiggle the head to confirm it’s properly secured
5. Reconnect Spark Plug: Reattach the spark plug wire once installation is complete

Tips for Proper Installation:

• Refer to your new head’s instruction manual for any model-specific requirements
• If your new head requires different screws than the originals, use the ones provided with the new head
• Make sure no wires or cables are pinched between the head and gearbox housing

Loading String Into Bump-Feed Heads

If you’ve installed a bump-feed head, you’ll need to load it with fresh string. Here’s how to change a Husqvarna weed eater head string properly:

1. Remove the Spool: Take out the inner spool from the head housing
2. Cut New String: Use approximately 15-20 feet of .080″ or .095″ diameter string (check your manual for recommended size)
3. Find the Anchor Point: Locate the small hole or notch in the center of the spool
4. Thread the String: Push one end of the string through the anchor point, leaving about 2 inches protruding
5. Wind the Spool: Wind the string clockwise around the spool, keeping coils neat and tight
6. Leave Adequate Length: Leave about 6 inches unwound at the end
7. Reinstall the Spool: Place the spool back into the head housing
8. Thread Through Eyelets: Pull the string through the eyelets on the outer housing

Pro Tip: Wind the string in the direction indicated by arrows molded into the spool to prevent tangling during operation.

Testing Your New Head

After completing how to change a Husqvarna weed eater head, proper testing is crucial:

1. Visual Inspection: Check that all screws are tight and the head is secure
2. Initial Start: Start the trimmer and let it idle for a minute to check for unusual vibrations
3. Low-Speed Test: Operate at low speed in an open area to observe string feeding behavior
4. Full Operation: Test at normal operating speeds on light vegetation
5. Monitor Performance: Watch for smooth operation, proper string feeding, and absence of noise or vibration

If you notice any problems during testing, shut off the unit immediately and investigate before continuing use.

Troubleshooting Common Issues

Even when following proper procedures for how to change a Husqvarna weed eater head, you might encounter some common problems: (See Also:How Do You Turn On A Weed Eater)

String Not Feeding Properly

• Check that the string is threaded correctly through all eyelets
• Ensure the spool rotates freely inside the housing
• Verify you’re using the correct string thickness for your head

Excessive Vibration

• Confirm all mounting screws are tightened properly
• Check that the head is perfectly aligned with the gearbox
• Inspect the gearbox for any damage or wear

Head Won’t Stay Attached

• Verify you’re using the correct replacement head for your model
• Check that all mounting hardware is present and undamaged
• Ensure screws are tightened to proper torque specifications

Maintenance Tips for Longevity

To extend the life of your new weed eater head and minimize future replacements:

• Regular Cleaning: Clean the head after each use to remove debris and prevent buildup
• Proper Storage: Store your trimmer in a dry location to prevent rust and corrosion
• String Quality: Use high-quality string that resists breaking and fraying
• Periodic Inspection: Regularly check mounting screws and hardware for tightness
• Correct Technique: Avoid hitting hard surfaces like concrete or rocks that can damage the head
• Seasonal Maintenance: Perform thorough maintenance at the beginning and end of each trimming season

When to Call a Professional

While learning how to change a Husqvarna weed eater head is doable for most people, there are situations where professional assistance is recommended:

• If the gearbox itself appears damaged or worn
• If you’re uncomfortable working with power tool components
• If the replacement head doesn’t seem compatible despite following identification steps
• If you discover additional problems beyond the head during inspection
• If you lack the necessary tools or workspace for safe installation

Authorized Husqvarna service centers can provide expert assistance and ensure all components work together properly.

Replacement Head Comparison

Here’s a comparison of popular Husqvarna replacement head options to help you choose the right one:

Frequently Asked Questions

Can I use any brand of replacement head on my Husqvarna?

While some universal heads may fit, it’s always best to use genuine Husqvarna replacement parts or heads specifically designed for your model. Universal heads may not provide optimal performance or fit securely.

How often should I replace my weed eater head?

There’s no set timeline since it depends on usage frequency and conditions. However, if you’re constantly dealing with tangled line, short cutting length, or physical damage to the head housing, it’s probably time for a replacement.

What size string should I use?

Most Husqvarna bump-feed heads use either .080″ or .095″ diameter string. Check your owner’s manual for the exact specification. Using the wrong size can cause feeding problems or excessive wear.

Is it difficult to change the head myself?

With proper preparation and following the steps outlined in this guide, changing a Husqvarna weed eater head is a moderately easy task that most homeowners can accomplish in under 30 minutes. (See Also:How To Restring A Husqvarna Weed Eater)

Can I convert from one head type to another?

Yes, as long as the new head is compatible with your specific model. You may need additional hardware or adapters depending on the conversion type.

What’s the difference between automatic and bump feed?

Automatic feed systems dispense line automatically as needed, while bump feed requires you to tap the head against the ground to release more line. Automatic feed is more convenient but can waste string, while bump feed gives you more control.

Conclusion

Learning how to change a Husqvarna weed eater head is a valuable skill that empowers you to maintain your equipment effectively and economically. By following the steps outlined in this guide, you can confidently tackle this task whether you’re replacing a worn string head, upgrading to a different cutting system, or simply performing routine maintenance.

Remember to always prioritize safety, take your time with identification and preparation, and don’t hesitate to consult your owner’s manual or contact Husqvarna support if you encounter any challenges. With practice, this maintenance task will become second nature, saving you both time and money while keeping your trimmer operating at peak performance.

Whether you’re a seasoned DIY enthusiast or tackling this project for the first time, the satisfaction of successfully completing the job yourself makes the effort well worthwhile. Your newly installed head will provide cleaner cuts, better performance, and renewed life for your trusted Husqvarna weed eater.