Husqvarna T25 Tap Head (M10 left-hand)
Husqvarna's T25 tap-and-go trimmer head with a 10 mm left-hand thread — the standard head on many Husqvarna straight-shaft trimmers.
In short:The Husqvarna T25 is a tap-and-go (bump-feed) twin-line trimmer head that fits a 10 mm left-hand-threaded arbor, as used on many Husqvarna straight-shaft trimmers and brush cutters; the listing on our link is the US 'Tap Advance' version. You release more line by tapping the head on the ground at full throttle. It's a light-to-medium-duty head for grass and weeds. Check your machine's arbor thread and the line size in its manual before buying.
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Pros
- Original Husqvarna part
- Simple tap-to-feed operation
- Fits many Husqvarna straight-shaft machines
Cons
- Our link is a US listing — check UK availability
- Bump feed means stopping to rewind the spool
What it is
The T25 is Husqvarna’s tap-and-go twin-line head, fitted as standard to many of its straight-shaft trimmers and brush cutters (Husqvarna UK lists a T25 head with the 128R). The listing on our link is the US “Tap Advance” version, with a 10 mm left-hand-threaded arbor. It showed no UK price when we checked in October 2026, so check Husqvarna dealers.
How it works
Run the engine at full throttle and tap the head lightly on the ground: a ratchet releases a little more line each time, and the guard’s blade trims it to length. When the spool runs out, you open the head and rewind fresh line — how to do it is in how to change brush cutter line and how to thread brush cutter line.
Will it fit?
Check two things: your machine’s arbor thread (most Husqvarna straight-shaft machines use M10 left-hand) and the line size the manual recommends for your engine. If your head won’t feed, the cause is often worn eyelets or a tangled spool rather than the head — see line won’t feed.
Alternatives
For heavier grass, the Husqvarna T35 takes thicker line. Other options are compared in the best brush cutter heads.
More heads we cover
A cheap pattern bump-feed head replacing the Echo Speed-Feed 400 on the SRM-210, SRM-225 and SRM-230 — tap-to-feed, no special tools.
- TypeBump feed (tap to release line)
- ReplacesEcho Speed-Feed 400
- Listed forEcho SRM-210, SRM-225, SRM-230
Husqvarna's T35 semi-automatic (tap) trimmer head for 2.4–2.7 mm line — a tougher head for mid-size petrol brush cutters on rough grass.
- TypeSemi-automatic (tap) head
- Line size2.4–2.7 mm
- Part number578 44 63-01
A twin-line tap-feed trimmer head with an M10 × 1.25 left-hand thread, pre-loaded with 4 m of 2.4 mm line and cutting up to 30 cm — for petrol brush cutters.
- TypeTwin-line tap (bump) feed head
- ThreadM10 × 1.25 left-hand
- Line supplied4 m of 2.4 mm, pre-loaded
Oregon's boltless tap-and-go universal head (109 mm) for strimmers over 33 cc — takes up to 2.4 mm line, with brass eyelets, supplied with Duoline.
- TypeBoltless tap-and-go (bump feed)
- Diameter109 mm
- LineUp to 2.4 mm, various shapes; supplied with Duoline