Stihl model · engine series 1101

BL

Production1952–59

MarketEU

RarityRare

Engine family1101

125 cc; two-man saw convertible to one-man (also sold as BG 41)

The production, market and rarity details above are specific to the BL roster record. The chain, bar and displacement figures below are the published family fitment for engine series 1101; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.

Family fitment specs

Displacement125 cc

Guide bar18–24″

Chain.404″ (≈)

Family era1952–1959

Chains & bars that fit the BL

Pitch & gauge .404″ (≈) · recommended bar 18–24″ · round file 7/32" (5.5 mm)

Replacement chain → Guide bar →

Files, oil & sharpening

Round file 7/32" (5.5 mm) → Bar & chain oil → 2-in-1 sharpener →

Suggested match: Oregon 27/59-series. Confirm the drive-link count for your exact bar length before ordering. These are equivalent aftermarket (Oregon) chains, not genuine STIHL chain — STIHL sells its own chain through its dealer network, and we're not affiliated with STIHL. New to pitch & cutter types? See the chain & cutter guide.

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Data confidence

Chain, bar and displacement confidence applies to the shared BL family data.

displacement · sourcedbar real-world · estimatedchain · estimateddates · sourcedvariants · sourced

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