§ How-To
Ryobi Trimmer Spool Replacement Guide: Line Size, Cap, and Fitment
How to choose the right Ryobi replacement spool, confirm .065 or .080 line, and avoid buying the wrong cap or auto-feed spool.
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Most Ryobi spool searches start with a simple problem: the line is gone, the cap is cracked, or the trimmer will not feed. The right replacement depends on the trimmer head style, line diameter, and whether the spool is auto-feed, bump-feed, or a reloadable head.
Quick answer
For Ryobi cordless trimmers, confirm these before buying:
- The trimmer model number.
- The head type: auto-feed, bump-feed, or Reel Easy style.
- The line diameter: commonly
.065"or.080". - Whether you need the spool, the cap, or the whole head.
- Whether the listing includes the correct cap tabs and spool shape.
If the old spool is still available, bring it to the product page as your reference. Match the center hole, notch pattern, cap shape, and line diameter.
Ryobi spool fitment checklist
| Part | What to check | Why it matters |
|---|---|---|
| Spool | Hub shape and line diameter | Wrong spool may not rotate or feed |
| Cap | Tab count and locking shape | Wrong cap will pop off or not latch |
| Line | .065 or .080 | Too thick can jam, too thin can snap |
| Head | Auto-feed vs bump-feed | Spools are not always interchangeable |
.065 or .080 for Ryobi?
Small 18V and 20V trimmers often run .065" line. Larger 40V models may use .080" or support a heavier head. Do not assume every Ryobi spool uses the same gauge.
If the line keeps snapping, you may be under-gauged for the job. If the head will not feed, you may be over-gauged for the spool. See choosing trimmer line gauge for the full comparison.
Replacing the spool
- Remove the battery.
- Press the cap tabs and lift the cap away.
- Remove the old spool and clean grass from the head.
- Place the new spool with the line end routed through the eyelet.
- Reinstall the cap until both tabs click.
- Pull the line gently to confirm it feeds.
If the head uses a speed-winder style, do not install a pre-wound spool unless the head is designed for it. Use how to wind a trimmer spool instead.
Common mistakes
- Buying a cap when the spool is the worn part.
- Buying a spool when the cap tabs are broken.
- Using
.080"line in a head marked for.065". - Reusing a spool with melted or sharp eyelets.
- Ignoring the model number and buying by brand only.
FAQ
Are Ryobi spools universal?
No. Many Ryobi trimmers use similar-looking spools, but the cap, hub, and feed style can differ.
Can I refill a Ryobi spool instead of replacing it?
Often yes, if the spool is not cracked or warped. Use the same line diameter the head is rated for.
Why does the cap keep popping off?
The cap tabs may be worn, the wrong cap may be installed, or grass packed inside the head may stop it from locking fully.
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