Stihl model · engine series 1148
MS 172 31.8 cc
31.8 cc; replaces MS 171 (C-E variant available)
The production, market and rarity details above are specific to the MS 172 roster record. The displacement below is specific to this roster record. The chain, bar and mount are the published family fitment for engine series 1148; 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 172
Pitch & gauge 3/8″ Picco · .043–.050″ · recommended bar 12–18″ · bar mount 3005 / A074 · round file 5/32" (4.0 mm)
Chain & bar by length
| Bar | Drive links | Shop |
|---|---|---|
| 12″ | 44 DL | Chain → Bar · 3005 → |
| 14″ | 50 DL | Chain → Bar · 3005 → |
| 16″ | 55 DL | Chain → Bar · 3005 → |
Drive-link counts come from STIHL's saw-chain catalog. Bar searches include mount 3005 / A074; still confirm the mount stamp, pitch, gauge and drive-link count on your installed bar before ordering.
Files, oil & sharpening
Suggested match: Oregon 90/91-series (e.g. 91PX). 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 | 3,000 rpm |
| Max speed | 13,000 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.
Related models in series 1148
Data confidence
Chain, bar, mount and displacement confidence comes from the shared MS 162 · 172 · 182 · 212 family research.
Something wrong or missing for the MS 172? Report a correction →