Stihl model · engine series 1121
026 / 026 Pro 48.7 cc
- Chain
- .325″ · .050–.063″ (3/8″ option)
- Recommended bar
- 16–18″
- Mount
- 3003 / D025
Model displacement · family chain/bar fitment. Details & confidence ↓
Parts diagrams (17)
Browse saved diagrams & other models ↗520 parts entries · catalogue coverage: 026. Check the sheet’s variant and serial notes.
Service manuals
Read the instructions, then switch to parts diagrams without losing your place.
Workshop manual · English · 72 pages
024 / 026
Cover: August 2004 · copyright 1999
Covers 024 and 026, with differences identified in the procedures. Later technical bulletins may supersede instructions. MS 240 and MS 260 are not assigned this manual.
Read service manual →Model & family fitment specs
Displacement is specific to the 026 / 026 Pro roster record. 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.
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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Service & tuning
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.
About the 026 / 026 Pro
High collector demand
Production, market and rarity are specific to this model’s roster record.
Related models in series 1121
Shared engine-family membership does not establish parts interchangeability.
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 →