What to Check Before Buying Replacement Aerator Tines
Replacement coring tines are brand-specific—verify thread collar vs. carriage-bolt mounting before you order.
1. Screw-In Manual Tines vs. Bolt-On Tow-Behind Spoons
Manual fork aerators like the Landzie 42-inch use removable tubular tines that thread into a welded collar (compatible with the Landzie 3-Pack Replacement Tines). Welded manual tools (like the Yard Butler ID-6C) have fixed one-piece tubes. Tow-behind plug aerators use stamped curved coring spoons that bolt to the spool flange.
Rule of thumb: Keep a spare 3-pack of threaded hollow tines on hand if your soil contains gravel or tree roots.
2. Sharpening vs. Replacing Blunted Tips
Minor rock nicks on a hollow tine can be dressed with a round chainsaw file, but once the bottom bevel wears back by 1/4 inch, the tube wall thickens and will jam with clay—replace the tine set instead.
Rule of thumb: Coat threads with anti-seize or light oil when installing new manual tines.
3 benchmark picks
Ready to pick?
Questions
What is the difference between a core aerator and a spike aerator?
A hollow-tine core aerator (also called a plug aerator) extracts finger-sized cylinders of soil and deposits them on top of the lawn, creating open channels that let compacted soil expand, breathe, and absorb water. A solid-spike aerator (or aerator shoes) merely pokes holes by pushing soil sideways and downward, which can actually tighten compacted clay around each hole.
Does a 3.5-inch or 4-inch tine length guarantee a 4-inch deep soil plug?
No. Published tine length measures the entire steel coring tube or spoon from tip to mounting collar. In real-world lawn conditions, actual soil core depth typically ranges from 1.5 to 2.75 inches depending on soil moisture, clay compaction, operator foot force (on manual tools), or the amount of concrete-block ballast strapped to a tow-behind tray.
Why does my manual core aerator keep clogging with dirt?
Clogging almost always happens for one of two reasons: aerating when the soil is bone-dry and powdery, or aerating when it is saturated mud. Water your lawn thoroughly for 20–30 minutes the day before aerating—then wait 12 to 24 hours so the soil is moist like a wrung-out sponge. Moist soil slides smoothly up tapered hollow tines so each new step pushes the previous plug out the top.
Can I pull a 40-inch or 48-inch tow-behind plug aerator with a zero-turn mower?
Only if your zero-turn mower has a factory-approved rear hitch plate and its operator's manual permits towing 150–200 lbs (the combined weight of the aerator frame plus 100–150 lbs of concrete blocks). Never drop the coring tines while backing up or making tight zero-radius spin turns, which will bend the coring spoons and tear the turf.