Stihl model · engine series 1128
MS 440 70.7 cc
'Magnum' in US marketing
The production, market and rarity details above are specific to the MS 440 roster record. The displacement below is specific to this roster record. The chain, bar and mount are the published family fitment for engine series 1128; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.
Model & family fitment specs
Chains & bars that fit the MS 440
Pitch & gauge 3/8″ · .050–.063″ · recommended bar 16–28″ · bar mount 3003 / D025 · round file 7/32" (5.5 mm)
Chain & bar by length
| Bar | Drive links | Shop |
|---|---|---|
| 16″ | 60 DL | Chain → Bar · 3003 → |
| 18″ | 66 DL | Chain → Bar · 3003 → |
| 20″ | 72 DL | Chain → Bar · 3003 → |
| 22″ | 76 DL | Chain → Bar · 3003 → |
| 25″ | 84 DL | Chain → Bar · 3003 → |
| 28″ | 91 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 72/73/75 EXL. 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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Reference service specs
Reference-only service facts. STIHL revised parts by serial number, market, and production revision; verify against the saw label, IPL, or dealer parts lookup before ordering.
| Spark plug | Bosch WSR 6 F · NGK BPMR 7 A |
| Fuel filter | 0000 350 3504 |
| Air filter | 0000 140 4402 HD2 |
| Starter rope | 3.5 mm · 38″ |
| Guide coverage | 044 · 046 · MS 440 · MS 460 · MS 461 |
| Source | 2019 STIHL Technical Reference Guide · sourced |
- Specification chart separates 70.7 cc 044/MS 440 from 76.5 cc 046/MS 460/MS 461.
Factory tuning settings
| Idle speed | 2,500 rpm |
| Confidence | sourced |
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 (13)
398 part numbers. The catalogue files these under the MS 440, one bill of material covering this model.
Related models in series 1128
Data confidence
Chain, bar, mount and displacement confidence comes from the shared 044/046 · MS 440/460/461 family research.
Something wrong or missing for the MS 440? Report a correction →