Stihl engine series 1109 · XL
090 G (gear drive)
Displacement137 cc
Guide bar36–50″
Chain.404″ · .063–.080″
Production1969–1985
Chains & bars that fit the 090 G (gear drive)
Pitch & gauge .404″ · .063–.080″ · recommended bar 36–50″ · round file 7/32" (5.5 mm)
Files, oil & sharpening
Suggested match: Oregon 27/59-series. 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 (1)
| Model | Years | Market | Rarity | Notes |
|---|---|---|---|---|
| 090 G | 1969–85 | EU | Collectable | Largest Stihl ever, ~137 cc |
Data confidence
Provenance for this family's figures — verify anything tagged estimated, approx, or stale-risk against STIHL spec sheets.