Fitment first · Trimmer · SKU B0DRXJ2R1S

AF-100 Replacement Spool

AF-100 Replacement Spool for Black & Decker BESTA510 LSTE523 LSTE525 LST300 LCC340C LST136 LST136B LST140C LCC222 LST201 LST522 LST522E1AEV String Trimmer Ea…

Live marketplace price $18
Buyer rating 4.3 / 5
Check price

Compatibility checkpoint

Verify this before you buy

2 listed model matches
1 Match the machine model

Compare the model printed on your trimmer label with the fitment list below.

2 Confirm the line and spool spec

pre-wound spool

3 Check the part code

Match part B0DRXJ2R1S or ASIN B0DRXJ2R1S against the listing and your old part.

Listed model matches
AF-100-BKPAF-100-3ZP Spool
ReplacesB0DRXJ2R1S
Spool typepre-wound spool
CategoryTrimmer
ConditionNew aftermarket replacement

Overview

Keep your string trimmer ready for action with this pre-wound replacement spool. It is built to the same dimensions as the OEM spool, so it drops right into the trimmer head with no modifications. Aftermarket spools provide the same cutting performance as factory originals at a better value.

Key specifications

  • Pre-wound replacement trimmer spool
  • Direct-fit for listed trimmer models
  • Bump-feed compatible winding pattern

Compatibility

This spool is designed for Black+Decker string trimmers as listed above. Confirm the spool part number, line diameter, and trimmer model before ordering to ensure a proper fit.

Installation notes

Remove the spool cover from the trimmer head. Extract the old spool and clean out any grass or debris. Insert the new pre-wound spool, feed the line ends through the guide holes, and reattach the cover. Verify the line extends the correct length before trimming.

Common questions

Q: Will this AF-100 replacement spool fit my Black & Decker LST300 and LSTE525 trimmers, or is it only for AF-100-BKP?

Yes, this spool is made to replace the AF-100 style spool used on both the Black & Decker LST300 and LSTE525, along with the other listed models. If your trimmer uses the AF-100/AF-100-BKP/AF-100-3ZP spool style, this is the correct fit.

Q: How do I install this AF-100 spool on my BESTA510 without the line tangling or feeding wrong?

Remove the spool cap, take out the old spool, and drop the new AF-100 spool in with the line routed through the eyelets before snapping the cap back on. Leave a short amount of line exposed on both sides and make sure the spool turns freely inside the head so the auto-feed system can work properly.

Q: Is this the right replacement line spool for the Black & Decker LST136B and LST140C, and is there anything I should do to make it last longer?

Yes, the AF-100 spool is compatible with both the LST136B and LST140C as long as those units use the standard AF-100 spool system. To extend spool life, avoid slamming the trimmer head directly into concrete or chain-link fencing, and periodically clean grass buildup from the spool housing so the line can feed smoothly.

Compatibility

This page lists compatible equipment gathered from the product fitment data. Always confirm the model number stamped on your machine before ordering.

AF-100-BKPAF-100-3ZP Spool

Not sure which spool you need? See our guide: How to wind a trimmer spool or How to measure your old spool.

Before you buy — how to verify fitment

  1. Find your trimmer model number. It's usually on a label on the motor housing, battery slot, or lower shaft.
  2. Check spool compatibility. Compare the model number with the compatibility list above.
  3. Verify line gauge. Confirm the line thickness matches what your trimmer head requires by checking your manual or the old spool.
  4. Inspect the spool housing. Make sure the spool diameter, cap, spring post, and feed style match your trimmer head.

Frequently asked questions

How do I know this spool fits my trimmer?

Check your trimmer model number against the compatibility list above. Then verify the line gauge (.065, .080, .095) matches what your trimmer head requires — it's usually printed on the spool cap or in the manual.

Can I rewind a pre-wound spool?

Yes. Once the factory line runs out, you can rewind the spool with bulk trimmer line of the same gauge. Pre-wound spools just save time on the first load.

How often should I replace the spool?

Replace the spool when the line no longer feeds properly, the spring loses tension, or the spool body is cracked. Under normal weekend use, a spool lasts 2–4 refills before the housing wears out.

What gauge trimmer line should I use?

Match the gauge to your trimmer's power: .065" for light-duty electric trimmers, .080" for mid-range cordless, and .095" for gas-powered or heavy-duty models. Using too thick a line can stall the motor.

Where to buy

This part is available through Amazon with free returns on most orders. Use the fitment details above to compare your model, old part number, and physical specs before ordering.

Check current price on Amazon

Affiliate disclosure: we may earn a commission when you purchase through this link, at no extra cost to you.

§ Compare

Similar Trimmer parts

§ Guides

Related how-to guides