UK
STIHL FSA 80 R: strimmer line diameter
Line diameter for the AutoCut 27-2 head (factory head on the 80 R), from the manufacturer’s UK source. Use the size your manual gives for the head fitted to your tool.
AutoCut 27-2 head (factory head on the 80 R)
Answer
- 2.4 mm · Round, quiet line
At a glance
| Make | STIHL |
|---|---|
| Model | FSA 80 R |
| Market | the UK |
| Head fitted | AutoCut 27-2 head (factory head on the 80 R) |
| Line diameter | 2.4 mm |
| Shape | Round, quiet line |
| Source type | STIHL instruction manual (German edition, multilingual); line size and heads |
| Scope | UK / Germany / France / Spain / Italy · stihl country sites list this model |
| Last checked | 2026-10-20 |
AutoCut head: tap the head on the ground to advance line, as the manual describes. Use only the line sizes the manual permits for this head; the manual does not name a standard size.
Replacement part numbers
No replacement part number is verified for this exact model and market.
Source: STIHL FSA 80.0 R instruction manual (0458-027-9401-A) ↗ · checked 2026-10-20
Using this record
Match three things before you buy line: the model name on the rating plate, the head fitted to the tool, and the diameter in the table above. If the head has been replaced, this record may not apply; follow the instructions of the head you now have.
If the line does not fit or keeps breaking
- Line keeps breaking: separate normal wear from a head or loading fault.
- Not sure which diameter is on the spool: measure the line you have before you buy more.
- Not sure which head you have: identify the cutting head from the tool and its manual.
- Round, twisted or square line: why shape and diameter are separate choices.
Other STIHL models in the UK
Each link opens that model’s own record, with its head, line diameter and manufacturer source.
- STIHL FSA 30 · 1.6 mm
- STIHL FSA 50 · 1.6 mm
- STIHL FSA 60 R · 2.0 mm, 2.4 mm
- STIHL FS 38 · 2.0 mm
How this record was checked
The diameter and part numbers are copied from the cited page or manual, not estimated or averaged across models. The record carries the date it was last checked. Manufacturers change specifications between production runs, so confirm the rating plate and the current manual before you buy.
Same model name, different product: regional versions can differ. Match the rating plate.