How to Load a Kobalt Weed Eater? Quick Loading Instructions

Introduction

A weed eater is one of the most essential tools for residential and commercial yard maintenance, making quick work of overgrown grass, weeds, and edge trimming. Kobalt is a popular brand of weed eater known for its durability, performance, and range of gas, corded electric, and cordless models. However, when the trimmer line runs out, many users struggle with loading a new spool correctly, especially if they are new to the tool or have a model with a specialized feed system.

This comprehensive guide answers the question How to Load a Kobalt Weed Eater? for all model types, with step-by-step instructions, safety guidelines, troubleshooting tips, and best practices to make the loading process quick, easy, and error-free. Whether you have a bump feed, automatic feed, or older fixed-line Kobalt weed eater, you will find all the information you need to get your tool back up and running in minutes.

• Understanding Your Kobalt Weed Eater Model
• Safety Precautions Before Loading
• Tools and Materials You’ll Need
• How to Identify the Correct Replacement String
• General Step-by-Step Loading Process for All Kobalt Weed Eaters
• Loading a Kobalt Weed Eater with a Bump Feed System
• Loading a Kobalt Weed Eater with an Automatic Feed System
• Adjusting String Length After Loading
• Common Loading Mistakes and How to Fix Them
• Maintenance Tips to Extend Your Weed Eater’s Life
• Troubleshooting Common Post-Loading Issues
• Frequently Asked Questions
• Conclusion

Understanding Your Kobalt Weed Eater Model

Kobalt offers a wide range of weed eaters to suit different user needs, including 20V, 40V, and 80V cordless models for residential and light commercial use, gas-powered options for heavy-duty yard work, and corded electric models for small to medium yards. The loading process varies slightly depending on your model’s feed system, so identifying your exact model and feed type is the first step to a successful load.

You can find your model number printed on the rating plate located on the lower shaft of the weed eater, just below the motor housing. You can also locate it on the original product packaging or purchase receipt if you no longer have the tool on hand. Once you have your model number, you can look up specific loading instructions in your owner’s manual, or follow the general guidelines in this guide that apply to all Kobalt weed eaters.

The two most common feed systems found on modern Kobalt weed eaters are bump feed and automatic feed. Bump feed models require you to tap the bottom of the head on the ground to release more line, while automatic feed models release line automatically when you press the throttle trigger. A small number of older Kobalt models use a fixed-line system that requires full spool replacement when the line runs out, but these are far less common today.

Safety Precautions Before Loading

Loading a weed eater string is a simple task, but it carries a small risk of injury if proper safety measures are not followed. Taking a few minutes to prepare your workspace and gear will prevent accidents and make the process smoother.

First, disconnect all power sources before you start. For gas-powered Kobalt weed eaters, remove the spark plug wire from the spark plug to prevent accidental starting. For corded electric models, unplug the power cord from the outlet. For cordless models, remove the battery pack from the tool. Never attempt to load string while the weed eater is connected to a power source, as an accidental trigger pull could cause the head to spin and injure you.

Second, wear personal protective equipment (PPE). Work gloves will protect your hands from sharp string edges and any debris in the spool, while safety glasses will shield your eyes from grass clippings, dust, and broken string fragments that may fly out while you work.

Third, work in a well-ventilated, well-lit area. If you are working indoors, open windows or doors to ensure good airflow, especially if you are working with a gas model that may have residual fuel fumes. Make sure you have plenty of light to see the spool and winding direction clearly.

Finally, if you were using the weed eater recently, wait for the motor and muffler to cool completely before handling the tool. A hot muffler can cause severe burns, so allow at least 15 minutes of cool-down time after heavy use.

Tools and Materials You’ll Need

Before you start loading your Kobalt weed eater, gather the following items to make the process smooth and efficient. Most of these items are likely already in your garage or tool kit:

• Correct replacement string: Match the diameter and length specified for your model (usually 0.065″ to 0.095″ for residential use, 0.105″+ for commercial use)
• String trimmer line cutter or sharp scissors
• Work gloves (to protect your hands from sharp string edges)
• Safety glasses (to protect your eyes from debris)
• Soft cloth (to clean the spool and head)
• Small flathead screwdriver (for models with stuck spool covers)
• Needle-nose pliers (to remove old, broken string)

You will not need any specialized power tools for the loading process, and most users can complete the entire task in 10 to 15 minutes with these basic supplies.

How to Identify the Correct Replacement String

The correct replacement string for your Kobalt weed eater is specified in your owner’s manual, and is also printed on the rating plate on the lower shaft of the tool, near the motor housing. Using the wrong string can cause poor cutting performance, excessive motor strain, and even void your Kobalt warranty, so it is important to match the specifications exactly.

Most residential Kobalt weed eaters use round or square string with a diameter between 0.065 inches and 0.095 inches, while heavy-duty commercial models may use 0.105 inch or thicker twisted line. The total length of string you will need is typically 20 to 30 feet, depending on your model’s spool size. If you are unsure of the correct string type, bring your old spool or model number to a local hardware store, and a staff member can help you match the right replacement line.

Below is a comparison of common Kobalt-compatible string types to help you choose the best option for your yard work needs:

General Step-by-Step Loading Process for All Kobalt Weed Eaters

Once you have identified your model, gathered your tools, and purchased the correct replacement string, follow these general steps to load your Kobalt weed eater. These steps apply to all bump feed, automatic feed, and fixed-line models, with additional model-specific instructions outlined in the sections below.

1. Prepare your Kobalt weed eater for loading: Disconnect the spark plug for gas models, unplug the power cord for corded electric models, and remove the battery pack from cordless models. Place the weed eater on a flat, stable work surface. If there is old, broken string remaining in the head, remove it by pulling it out by hand or using pliers if it is stuck.
2. Access the spool housing: Most Kobalt weed eaters have a spool cover that twists off or is held in place with a small latch. Refer to your owner’s manual if you cannot locate the release mechanism. Twist the cover counterclockwise or press the latch to remove it, then set the cover aside in a safe place where it will not get lost.
3. Remove the empty spool: Once the cover is off, pull the empty spool straight out of the head. Some models have a small retaining clip that holds the spool in place; press the clip down to release the spool if needed.
4. Wind the new replacement string: Take your pre-cut replacement string (10-15 feet per side, total 20-30 feet depending on your model) and feed one end through the hole in the center of the spool. Pull the string through until there is a 3-4 inch tail on the opposite side of the spool. Hold the tail in place with your thumb, then wind the string tightly and evenly around the spool in the direction indicated by the arrow printed on the spool (almost all Kobalt spools have a directional arrow to ensure proper feeding). Do not overlap the string as you wind, as this can cause jams during use. Leave a 4-6 inch tail of unwound string on the side where the line will exit the head. If your model uses dual line, wind each line on opposite sides of the spool with equal length tails.
5. Reinstall the spool: Align the spool with the slot in the head, then push it straight in until it clicks into place. If your model has a retaining clip, make sure it snaps back over the spool to hold it secure.
6. Feed the line through the exit ports: Pull the two 4-6 inch tails of string through the exit holes on the side of the spool cover. Make sure the line is not tangled or caught on any part of the spool.
7. Reattach the spool cover: Align the cover with the head, then twist it clockwise until it clicks into place, or press the latch until it secures the cover.
8. Test the feed: Reconnect the power source (spark plug, power cord, or battery), then turn on the weed eater and activate the feed (tap the head for bump feed models, press the trigger for automatic feed models) to confirm the line extends properly. Trim any excess line with your cutter so it is the correct length for your model (usually 6-8 inches beyond the head).

If your model is compatible with pre-wound replacement spools, you can skip the winding step entirely and install the new pre-wound spool directly, cutting loading time in half.

Loading a Kobalt Weed Eater with a Bump Feed System

Bump feed is the most common feed system found on Kobalt weed eaters, prized for its simplicity and reliability. The key to loading a bump feed model correctly is winding the string in the proper direction and leaving long enough tails to feed when you tap the head on the ground.

Follow these additional steps specifically for bump feed models, after completing the general loading process outlined earlier:

1. When winding the string, pay close attention to the directional arrow printed on the spool. Wind the string tightly and evenly in the direction of the arrow; winding it backwards will prevent the line from feeding when you bump the head.
2. For dual-line bump feed models, wind each line on opposite sides of the spool, making sure the tails are equal in length (6-8 inches) so both lines extend evenly during use.
3. After reassembling the head, test the feed by turning on the weed eater and tapping the bottom of the head firmly on a hard, flat surface (like a sidewalk or driveway) 2-3 times. You should see 6-8 inches of line extend from each exit port. If the line does not extend, double-check the winding direction and tail length.
4. If you have a single-line bump feed model, repeat the tapping process to confirm the line extends properly, then trim any excess line to the correct length.

Note that some Kobalt bump feed models have a line adjustment knob on the head that lets you customize the length of extended line. If your model has this knob, turn it clockwise to shorten the line or counterclockwise to lengthen it until you reach your desired 6-8 inch extension.

Loading a Kobalt Weed Eater with an Automatic Feed System

Automatic feed Kobalt weed eaters are designed for convenience, as they release new line automatically when you press the throttle trigger, eliminating the need to bump the head on the ground while you work. Loading an automatic feed model follows the same general steps as other models, with a few small adjustments to ensure proper feeding.

1. When winding the string, follow the directional arrow on the spool as you would for a bump feed model. Automatic feed spools are designed to release line in small increments when the trigger is pressed, so proper winding direction is critical for consistent feeding.
2. Leave 4-6 inch tails of line on the exit side of the spool, rather than the longer 6-8 inch tails required for bump feed models. Automatic feed systems only need a small amount of excess line to grab and release.
3. After reassembling the head, test the feed by turning on the weed eater and pressing the throttle trigger. You should see 6-8 inches of line extend automatically. If the line does not extend, check that the spool is seated correctly and that the winding direction matches the arrow on the spool.
4. Many Kobalt automatic feed models also have a manual feed advance button on the handle. Press this button 2-3 times after loading to prime the feed system and ensure line is ready for use.

For even faster loading, many Kobalt automatic feed models are compatible with pre-wound replacement spools that come pre-loaded with the correct string and winding direction. These spools are a great option for beginners or users who want to cut down on loading time, as they eliminate the need to wind string manually.

Adjusting String Length After Loading

Once you have loaded your Kobalt weed eater and confirmed the line feeds properly, you will need to adjust the length of the extended line to the optimal 6-8 inches. Line that is too long creates excess drag on the motor, reduces battery life (for cordless models) or fuel efficiency (for gas models), and can cause the line to break frequently. Line that is too short will require frequent feeding and reduce your trimming efficiency.

Most Kobalt weed eaters have a line adjustment knob located on the side of the head. To adjust the length:

1. Turn the knob clockwise to shorten the extended line.
2. Turn the knob counterclockwise to lengthen the extended line.
3. Test the length by activating the feed (bumping the head for bump feed models, pressing the trigger for automatic feed models) and measuring the extended line with a ruler. Adjust as needed until the line is 6-8 inches long.

If your model does not have an adjustment knob, you can trim the extended line to the correct length using a string trimmer line cutter or sharp scissors. Never pull the line out manually while the weed eater is running, as this can cause the line to snap or damage the spool mechanism.

Common Loading Mistakes and How to Fix Them

Even experienced users can make small mistakes when loading a Kobalt weed eater that lead to poor performance or line jams. Below are the most common errors and their quick fixes:

• Winding the string in the wrong direction: If your line will not feed after loading, the most likely cause is that you wound the string backwards. Remove the spool, check the directional arrow on the spool, and rewind the string tightly in the correct direction. This is the most common mistake made by new users.
• Using string that is too thick or too thin: String that is thicker than the recommended diameter for your model will overload the motor, cause excessive vibration, and lead to frequent jams. String that is too thin will break easily and cut poorly. Fix this issue by replacing the string with the correct diameter specified in your owner’s manual.
• Overlapping the string while winding: Overlapping creates bulky spots on the spool that cause tangles and jams during use. To fix this, remove the spool, unwind the string, and rewind it tightly and evenly without any overlaps.
• Not leaving a long enough tail on the exit side: If the line does not feed at all, you may have left the tail too short on the side where the line exits the head. Remove the spool, pull a 4-6 inch tail through the exit port, and reinstall the spool.
• Failing to secure the spool properly: If the line feeds erratically or falls out of the head, the spool may not be seated correctly in the head, or the spool cover may be loose. Push the spool firmly into place until it clicks, and twist the cover clockwise until it is fully secured.
• Forgetting to reconnect the power source after loading: This is a common oversight for new users who disconnect the spark plug, power cord, or battery for safety during loading. Simply reconnect the power source before testing the feed.

Maintenance Tips to Extend Your Weed Eater’s Life

Proper maintenance of your Kobalt weed eater will not only make loading easier over time, but also extend the life of the tool and keep it performing at its best. Follow these simple tips to keep your weed eater in top condition:

• Clean the spool and head after each use: Grass clippings, dirt, and debris can build up in the spool housing and cause jams or poor feeding. Use a soft cloth to wipe down the head and spool after every use, and remove any tangled string or debris from the exit ports.
• Inspect the string regularly: Check the line for fraying, wear, or damage before each use. Replace the string as soon as it shows signs of wear to avoid breakage during use and damage to the spool.
• Store replacement string properly: Keep replacement string in a cool, dry place away from direct sunlight. Exposure to moisture and UV light can make the string brittle and prone to breaking.
• Lubricate the spool shaft periodically: Apply a small drop of lightweight oil to the spool shaft every 2-3 months to keep it turning smoothly and prevent rust. This is especially important for models used in wet or humid conditions.
• Check for damaged parts regularly: Inspect the spool cover, retaining clip, and adjustment knob for cracks or wear every few months. Replace any damaged parts immediately to prevent the spool from coming loose during use.

For more detailed maintenance instructions, refer to your owner’s manual or visit Kobalt’s official support page for model-specific guidance.

Troubleshooting Common Post-Loading Issues

If you have loaded your Kobalt weed eater correctly but are still experiencing issues, the following troubleshooting steps will help you identify and fix the problem quickly:

• Line will not feed: First, check that you wound the string in the correct direction (matching the arrow on the spool). Next, confirm that you left a 4-6 inch tail on the exit side of the spool. Finally, remove the spool and check for tangles or knots in the string that may be preventing it from feeding.
• Line feeds too much or too little: Adjust the line length knob on the head to shorten or lengthen the extended line. If your model does not have an adjustment knob, trim the line to the correct 6-8 inch length with a cutter. Also, confirm that the spool is seated correctly in the head, as a loose spool can cause erratic feeding.
• Line breaks frequently during use: First, confirm that you are using the correct diameter string for your model. Next, check that the line is not frayed or worn, and replace it if needed. Finally, check the area you are trimming for sharp rocks, sticks, or other objects that may be cutting the line.
• Excessive vibration after loading: Make sure the spool is fully seated and secured in the head, and that the spool cover is tightly attached. Also, confirm that the string is wound tightly and evenly around the spool, with no bulges or overlaps that can cause imbalance. If the vibration persists, check that the string is the correct length and not too long.

If you are unable to resolve the issue after trying these steps, contact Kobalt customer support for further assistance, or take your weed eater to an authorized service center for repair.

Frequently Asked Questions

How often should I replace the string on my Kobalt weed eater?

Most residential users need to replace the string every 2 to 4 weeks with regular use, or more often when trimming dense, woody vegetation. Replace the line immediately if it becomes frayed, worn, or breaks frequently, as damaged line can cause spool jams and reduce cutting performance.

Can I use any type of replacement string for my Kobalt weed eater?

No, only use string that matches the diameter and type specified in your owner’s manual. Using string that is too thick can overload the motor and cause premature wear, while string that is too thin will break frequently and cut poorly. Using non-compatible string may also void your Kobalt warranty.

Why won’t my line feed after I load it?

The most common causes are winding the string backwards (opposite the arrow on the spool), not leaving a 4-6 inch tail on the exit side of the spool, or tangles in the wound string. Remove the spool, rewind the string in the correct direction, leave a proper tail, and ensure there are no overlaps or knots to fix the issue.

What’s the difference between loading a bump feed and automatic feed Kobalt weed eater?

The core winding process is the same for both, but bump feed models require 6-8 inch line tails to feed when you tap the head on the ground, while automatic feed models only need 4-6 inch tails, as line is released via a trigger. Always refer to your owner’s manual for model-specific instructions.

Can I use a pre-wound replacement spool for my Kobalt weed eater?

Yes, most Kobalt models are compatible with pre-wound replacement spools available from Kobalt or third-party retailers. These spools come pre-loaded with the correct string and winding direction, making them a convenient option for beginners. Just ensure the spool is compatible with your specific model number for proper fit and performance.

Conclusion

Loading a Kobalt weed eater is a straightforward process that anyone can master with the right tools, correct string, and proper instructions. By first identifying your model and feed system, following the step-by-step loading process, and taking basic safety precautions, you can get your weed eater back up and running in minutes.

Remember to always use the correct string diameter and type for your model, wind the string in the direction of the arrow on the spool, and test the feed before starting to trim. Avoid common mistakes like overlapping string or using the wrong line, and follow regular maintenance tips to keep your tool performing well for years to come.

If you run into issues that you cannot resolve with the troubleshooting steps in this guide, refer to your owner’s manual or contact Kobalt’s customer support team for assistance. With proper care, your Kobalt weed eater will be a reliable tool for all your yard maintenance needs for seasons to come.