Stihl model · engine series 1148

MS 172 31.8 cc

Chain: 3/8″ Picco · .043–.050″
Recommended bar: 12–18″
Mount: 3005 / A074

Model displacement · family chain/bar fitment. Details & confidence ↓

Parts diagrams (8)

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192 parts entries · catalogue coverage: MS 172 C-E. Check the sheet’s variant and serial notes.

Model & family fitment specs

Actual displacement31.8 cc

Guide bar12–18″

Chain3/8″ Picco · .043–.050″

Bar mount3005 / A074

Displacement is specific to the MS 172 roster record. 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.

displacement · verifiedbar real-world · estimatedbar mount · sourcedchain · sourceddates · verifiedvariants · verified

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)

Replacement chain → Guide bar · 3005 →

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

Round file 5/32" (4.0 mm) → Bar & chain oil → 2-in-1 sharpener →

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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Service & tuning

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.

About the MS 172

Production2022→

MarketGlobal

RarityCurrent

Engine family1148

Family era2022→now

31.8 cc; replaces MS 171 (C-E variant available)

Production, market and rarity are specific to this model’s roster record.

Shared engine-family membership does not establish parts interchangeability.

Data confidence

Chain, bar, mount and displacement confidence comes from the shared MS 162 · 172 · 182 · 212 family research.