How do you remove a spool from a trimmer?

Removing the spool from a trimmer is an important maintenance task that allows you to replace the trimmer line and ensure optimal performance. While the process varies slightly between trimmer models, the general steps are straightforward. In this article, we’ll walk through the complete process of removing a trimmer spool so you can replace old trimmer line and get your trimmer running like new.

Why Remove the Spool?

There are a few key reasons you may need to remove the spool from your trimmer:

• To replace old, worn trimmer line
• To clear out accumulated debris
• To inspect for damage and perform repairs
• To lubricate interior components

Replacing the trimmer line is the most common reason. Trimmer line wears down with use and eventually becomes too short to adequately cut through grass and weeds. Replacing the spool allows you to install new trimmer line and restore full cutting power.

Removing debris that builds up inside the trimmer head over time is another motivation for taking the spool out. Small clippings, dirt, and other debris can accumulate, which can impede the trimmer line and cause performance issues. Taking the spool out provides the opportunity to clean away this material.

Inspecting for potential damage and making any needed repairs requires spool removal as well. Signs of damage include rough operation, vibrating, rattling noises, etc. Taking the spool out allows you to inspect components and fix issues like a damaged spool housing, worn line eyelets, and more.

Lastly, removing the spool provides access to grease interior components like the drive shaft and gearbox. Proper lubrication prevents friction, overheating, and wear.

Trimmer Spool Designs

While all trimmer spools serve the same basic purpose, there are some design variations to be aware of. The main types include:

• Bump feed spool – To advance line, bump the trimmer head on the ground.
• Automatic feed spool – Line advances automatically while trimmer is running.
• Pre-cut length spool – Uses lengths of trimmer line rather than wound spool.
• Fixed line spool – Single piece of line is fixed in place.

The specific design determines the proper way to install new line and advance the trimmer line during use. However, the general process of removing the spool itself remains largely the same. The key differences will be pointed out in the steps below.

Gather Recommended Tools

Removing a trimmer spool can typically be done with just a few basic tools:

• Safety glasses – protect eyes from debris.
• Gloves – protect hands from sharp edges.
• Screwdriver – remove spool cover screws.
• Socket wrench – for any nuts/bolts.
• Brush – remove debris from spool compartment.
• Needle nose pliers – grip loose pieces.

For bump feed spools, no tools are required. Always consult your owner’s manual for any specific tools or parts recommended by the manufacturer.

Disconnect Spark Plug

Before servicing any trimmer, always disconnect the spark plug wire. This prevents accidental starting during the process. To do this:

1. Locate the spark plug wire.
2. Follow it down to the spark plug located on the trimmer motor.
3. Pull the rubber boot off the spark plug.
4. Use needle nose pliers to grip the wire and detach it from the plug.

Set the loose wire safely aside until you are finished removing the spool and servicing the trimmer. Reattaching it will be the last step before testing operation.

Remove Spool Cover

With the spark plug disabled, you can now safely work on the trimmer head to get to the spool. The spool is protected by a plastic cover that needs to be detached first. To remove the cover:

1. Locate cover screws. There are typically 2-4 screws.
2. Use a screwdriver to remove cover screws. Turn counterclockwise.
3. Separate cover from trimmer head housing.
4. Set cover and screws aside carefully.

Inspect the cover for any cracks, warping, or other damage. Make sure the screw holes are intact and not stripped. Replace cover if severely damaged.

Remove Spool Retainer

With the cover off, you’ll see the spool retainer underneath. This is a flat washer, C-clip, or circular clip that holds the spool securely inside the housing. To remove it:

1. If retainer is a washer, pry up gently with a flathead screwdriver.
2. If retainer is a C-clip, use needle nose pliers to remove it from the groove.
3. If retainer is a circular clip, locate release tabs and squeeze together to detach it.
4. Set retainer aside carefully.

Make note of the retainer style as you will need to replace it with the same type when reassembling.

Extract Spool

With the retainer removed, you can now slide out the spool. To extract it:

1. Grasp spool rim firmly with fingers.
2. Pull spool out of housing chamber.
3. Some resistance is normal, but spool should slide out.
4. If stuck, wiggle side-to-side to loosen.
5. Remove spool completely and set aside.

Don’t yank or forcefully tug the spool. If it won’t budge, double check for any remaining retainer pieces obstructing it.

Inspect Spool

With the spool removed, inspect it for any signs of damage or wear:

• Check for cracks or breakage.
• Make sure line eyelets are intact.
• Ensure drive shaft engages properly.
• Check for debris buildup.
• Test locking mechanism if adjustable spool.

Damaged spools should be replaced for optimal performance and safety. Contact the manufacturer or search online for OEM replacement spools specific to your trimmer model.

Replace Trimmer Line

If spool is in good condition, you can leave it intact and just replace the trimmer line. To do this:

1. If present, remove old line and discard.
2. Consult owner’s manual for proper line gauge and length.
3. Match new line to existing size and capacity.
4. Wind new line evenly and snugly onto spool.
5. Refer to loading instructions for specific spool style.
6. Leave 6-12 inches extending beyond spool.

The line capacity and installation process can vary quite a bit depending on the spool style. Always consult the owner’s manual guidance.

Clean Spool Housing

While you have the spool out, take the opportunity to clean the interior housing. To do this:

1. Use compressed air to blow out dust and debris.
2. Scrub with small brush to dislodge stuck-on gunk.
3. Clean housing wall and gearbox/drive shaft.
4. Remove large clippings by hand.
5. Wipe any grease or grime with a rag.

Proper cleaning prevents debris buildup that can impede the spool. Be careful not to damage any parts or components while cleaning the housing.

Inspect Drive Shaft

The drive shaft is what transfers power from the motor to turn the spool. Inspect it closely for:

• Damage or wobbling
• Excess play in shaft housing
• Cracks or grinding
• Grease buildup

Use emery cloth to polish the drive shaft if needed to remove grime. Replace the shaft if cracked or damaged. Consult your owner’s manual for proper replacement parts.

Lubricate Components

While the trimmer is disassembled, lubricate key components including:

• Drive shaft
• Gearbox
• Spool interior
• Housing where spool sits

Use light oil or grease recommended by the manufacturer. Proper lubrication prevents sticking and reduces friction, wear, and overheating.

Reinstall Spool

Once any repairs have been made and components are lubricated, you can reinstall the spool. To do this:

1. Slide spool back into housing chamber properly aligned.
2. Ensure drive shaft engages spool gears.
3. Press spool flat into chamber.
4. Replace spool retainer washer, C-clip, etc.
5. Ensure spool is held securely.

Double check that the spool sits flat and does not wobble when rotating. If not even, realign until properly seated.

Replace Cover

Once the spool is reinstalled properly, replace the protective cover. To do this:

1. Line up cover screw holes.
2. Press cover into trimmer head.
3. Insert screws and tighten.
4. Do not overtighten screws.
5. Ensure cover is on securely.

Test rotating the cover after attaching to make sure it spins freely without friction. This allows easy access when needing to advance trimmer line.

Reconnect Spark Plug

The last step after reassembling the trimmer is to reconnect the spark plug wire. To do this:

1. Remove wire from stored position.
2. Locate spark plug on motor.
3. Attach rubber boot firmly over plug.
4. Pull wiring to ensure connection is secure.

A loose spark plug wire can interrupt power transmission and cause performance issues. Make sure connection is snug.

Test Operation

Before regular use, test trimming operation to make sure spool removal and reinstallation was successful. To test:

1. Add trimmer fuel as needed.
2. Turn trimmer on and let run for 1 minute.
3. Ensure motor runs smoothly without issue.
4. Verify trimmer head rotates properly.
5. Make a few practice trimming passes.
6. Confirm new line feeds out and cuts evenly.
7. Turn trimmer off and inspect for any problems.

If you notice any vibration, rattling, binding issues, etc., turn off immediately and re-inspect assembly. Minor adjustments can resolve most issues.

Perform Regular Maintenance

To maximize the benefits of removing your trimmer spool, perform other recommended maintenance while you have the equipment disassembled. This includes:

• Inspecting trimmer shaft and handle for cracks.
• Checking throttle trigger and switch for sticking.
• Cleaning exterior housing and vents.
• Checking/replacing air filter.
• Sharpening/replacing blade (for blade trimmers).

Consult your owner’s manual maintenance schedule to see what tasks should be performed based on operating hours used. Thorough maintenance improves performance and extends equipment lifespan.

Safety Tips

While removing and reinstalling your trimmer spool, keep these safety tips in mind:

• Always disconnect spark plug before servicing.
• Wear gloves to avoid sharp edges.
• Use eye protection.
• Avoid contacting hot components.
• Secure trimmer while working to prevent tipping.
• Double check for loose components after reassembly.
• Keep work area clear of debris.

Exercise caution when servicing any power equipment. Take your time and work in a clean, uncluttered area to ensure safe and proper spool removal and installation.

Troubleshooting Issues

If you encounter any problems after attempting to remove and reinstall your trimmer spool, review these troubleshooting tips:

• Spool stuck – Check for missed retainer pieces, debris buildup, damage/warping.
• Line not feeding – Ensure line is routed through eyelets properly, check line condition.
• Vibration – Confirm spool is seated evenly, check shaft and hardware for damage.
• Trimmer won’t start – Verify spark plug connected properly, check fuel level.
• Reduced power – Replace worn line, inspect air filter and vents for blockage.

Consult your owner’s manual for other issues. For stubborn problems, seek assistance from a certified repair technician.

When to Call a Professional

While routine spool removal is usually manageable as a DIY project, it’s best to call in a professional trimmer repair specialist for issues like:

• Damaged/broken spool housing
• Bent or cracked drive shaft
• Stripped cover screw holes
• Major motor issues (won’t start, etc)
• Excessive wear/corrosion on components

Attempting DIY repairs on heavily damaged components can often make problems worse or introduce safety risks. Let a qualified technician assess significant issues and perform intensive repairs as needed.

Conclusion

Removing and replacing trimmer spools is crucial for replacing worn line and restoring optimal cutting performance. While specific steps can vary, the general process involves disconnecting the spark plug, detaching the cover, removing old line, installing new line, cleaning the housing, lubricating components, and properly reassembling. Exercise caution, work slowly and methodically, and refer to your owner’s manual for model-specific guidance. With routine spool maintenance and proper safety precautions, you can keep your trimmer in great shape for reliable grass and weed cutting.