Stihl model · engine series 1125
034 AV 56.5 cc
- Chain
- 3/8″ · .050–.063″
- Recommended bar
- 16–25″
- Mount
- 3003 / D025
034 AV chain size: 3/8″ · .050–.063″, 3003-mount bar. Typical STIHL drive-link counts for 3/8" (full) chain: 16″ = 60, 18″ = 66, 20″ = 72, 22″ = 76, 25″ = 84. Count the links on your old chain or read the bar stamp before ordering.
Model displacement · family chain/bar fitment. Details & confidence ↓
See also: 034 · 036 · MS 340/360 family specs · chain and file size guide · part number lookup
Parts diagrams (19)
Browse saved diagrams & other models ↗526 parts entries · catalogue coverage: 034. 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 · 74 pages
034 / 036 / 036 QS
Cover: October 1999 · copyright 2001
Covers 034, 036 and 036 QS. Use the chapter for the actual variant, especially the chain brake. MS 340 and MS 360 are not assigned this manual.
Read service manual →Model & family fitment specs
Displacement is specific to the 034 AV roster record. Chain, bar and mount are the published family fitment for engine series 1125; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.
Chain, bar and mount: family research from STIHL product pages and parts catalogues, dealer fiche and collector records. Checked Jul 2026. How we check fitment
Chains & bars that fit the 034 AV
Pitch & gauge 3/8″ · .050–.063″ · recommended bar 16–25″ · bar mount 3003 / D025 · round file 7/32" (5.5 mm) for Oregon; STIHL lists 13/64" (5.2 mm)
Chain & bar by length
| Bar | Drive links | Shop |
|---|---|---|
| 16″ | 60 DL | Chain .050″ →Chain .063″ → Bar · 3003 → |
| 18″ | 66 DL | Chain .050″ →Chain .063″ → Bar · 3003 → |
| 20″ | 72 DL | Chain .050″ →Chain .063″ → Bar · 3003 → |
| 22″ | 76 DL | Chain .050″ →Chain .063″ → Bar · 3003 → |
| 25″ | 84 DL | Chain .050″ →Chain .063″ → Bar · 3003 → |
Drive-link counts come from STIHL's saw-chain selection chart and depend on the bar mount as well as length. Pick the chain link that matches the gauge stamped on your bar. Bar searches include mount 3003 / D025; still confirm the mount stamp, pitch, gauge and drive-link count on your installed bar before ordering.
Drive-link counts: STIHL 2025 US catalog, saw chain selection, pp. 166-167; Oregon chain fit guide, STIHL section. Checked Nov 2026. How we check fitment
Files, oil & sharpening
Suggested match: Oregon 72 (.050″) / 73 (.058″) / 75 (.063″) series, e.g. 72/75 EXL. Match the gauge and confirm the drive-link count for your exact bar 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
No applicable service or tuning figures are available for this model yet.
About the 034 AV
56.5 cc
Production, market and rarity are specific to this model’s roster record.
Related models in series 1125
Shared engine-family membership does not establish parts interchangeability.
Data confidence
Chain, bar, mount and displacement confidence comes from the shared 034 · 036 · MS 340/360 family research.
Something wrong or missing for the 034 AV? Report a correction →