Stihl engine series 1120 · HO
009 · 010 · 011 · 012 · Mini Boss
Displacement30–40 cc
Guide bar12–16″
Chain3/8″ Picco · .050″
Production1978–2006
Chains & bars that fit the 009 · 010 · 011 · 012 · Mini Boss
Pitch & gauge 3/8″ Picco · .050″ · recommended bar 12–16″ · round file 5/32" (4.0 mm)
Files, oil & sharpening
Suggested match: Oregon 90/91-series (e.g. 91PX). Confirm the drive-link count for your exact bar length before ordering. Genuine STIHL chain isn't sold online — these are equivalent aftermarket (Oregon) specs.
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Models in this family (6)
| Model | Years | Market | Rarity | Notes |
|---|---|---|---|---|
| 009 / 009 LE | 1980–2009 | Global/EU | Common | ⚠ 'LE' is a market-simplified long-run variant, NOT limited edition |
| 010 AV / AVE | 1978–85 | Global | Uncommon | |
| 011 AVEQ | 1980–90 | Global | Common | Popular homeowner |
| 011 AVT / AVET | 1980–96 | EU/Global | Common | Top-handle |
| 012 AVE / AVET | 1986–94 | Global/EU | Common | |
| 09 Mini Boss | 1993–2006 | US | Common (US) | US branding of 009 |
Data confidence
Provenance for this family's figures — verify anything tagged estimated, approx, or stale-risk against STIHL spec sheets.