Stihl model · engine series 1122
064 AV 84.9 cc
84.9 cc big-bore
The production, market and rarity details above are specific to the 064 AV roster record. The displacement below is specific to this roster record. The chain, bar and mount are the published family fitment for engine series 1122; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.
Model & family fitment specs
Chains & bars that fit the 064 AV
Pitch & gauge 3/8″ · .063″ · .404″ on long bars · recommended bar 20–36″ · bar mount 3003 / D025 · round file 7/32" (5.5 mm)
Chain & bar by length
| Bar | Drive links | Shop |
|---|---|---|
| 20″ | 72 DL | Chain → Bar · 3003 → |
| 22″ | 76 DL | Chain → Bar · 3003 → |
| 25″ | 84 DL | Chain → Bar · 3003 → |
| 28″ | 91 DL | Chain → Bar · 3003 → |
| 32″ | 105 DL | Chain → Bar · 3003 → |
| 36″ | 114 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 | 4.5 mm · 39.5″ |
| Guide coverage | 064 · 066 · MS 650 · MS 660 |
| Source | 2019 STIHL Technical Reference Guide · sourced |
- Guide lists MS 650 at 84.9 cc and 066/MS 660 at 91.6 cc.
Factory tuning settings
| Idle speed | 2,500 rpm |
| LA screw (idle stop) | 1/4 turn |
| Confidence | sourced |
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. 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 (14)
413 part numbers. The catalogue files these under the 064, one bill of material covering this model.
Related models in series 1122
Data confidence
Chain, bar, mount and displacement confidence comes from the shared 064/066 · MS 660 · MS 650/640 family research.
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