Stihl model · engine series 1121
026 / 026 Pro 48.7 cc
High collector demand
The production, market and rarity details above are specific to the 026 / 026 Pro roster record. The displacement below is specific to this roster record. The chain, bar and mount are the published family fitment for engine series 1121; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.
Model & family fitment specs
Chains & bars that fit the 026 / 026 Pro
Pitch & gauge .325″ · .050–.063″ (3/8″ option) · recommended bar 16–18″ · bar mount 3003 / D025 · round file 3/16" (4.8 mm)
Chain & bar by length
| Bar | Drive links | Shop |
|---|---|---|
| 16″ | 67 DL | Chain → Bar · 3003 → |
| 18″ | 74 DL | Chain → Bar · 3003 → |
Drive-link counts come from STIHL's saw-chain catalog. Bar searches include mount 3003 / D025; still confirm the mount stamp, pitch, gauge and drive-link count on your installed bar before ordering.
Files, oil & sharpening
Suggested match: Oregon 95-series (95VPX) / 21–22 LPX. 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 fitment? See the bar-mount identification guide and chain & cutter guide.
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Factory tuning settings
| Idle speed | 2,800 rpm |
| L screw (low speed) | 1 turn |
| H screw (high speed) | 3/4 turn |
| LA screw (idle stop) | 1/4 turn |
| Confidence | reconstructed |
Screw figures are turns open from lightly seated. These are the figures every model in this family shares; an individual model page may be more specific. Matched on the base model number rather than this exact variant, so treat it as a starting point. Set the final mixture by ear and tachometer against the machine in front of you — running a two-stroke lean to hit a published number is how pistons get scored.
Parts diagrams (17)
520 part numbers. The catalogue files these under the 026, one bill of material covering this model.
Related models in series 1121
Data confidence
Chain, bar, mount and displacement confidence comes from the shared 024 · 026 · MS 260 · MS 240 family research.
Something wrong or missing for the 026 / 026 Pro? Report a correction →