Stihl model · engine series 1120

012 AV / AVE 45.2 cc

Production1978–91

MarketGlobal

RarityCommon

Engine family1120

45.2 cc

The production, market and rarity details above are specific to the 012 AV / AVE roster record. The displacement below is specific to this roster record. The chain, bar and mount are the published family fitment for engine series 1120; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.

Model & family fitment specs

Actual displacement45.2 cc

Guide bar12–16″

Chain3/8″ Picco · .050″

Bar mount3005 / A074

Family era1978–2004

Chains & bars that fit the 012 AV / AVE

Pitch & gauge 3/8″ Picco · .050″ · recommended bar 12–16″ · 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.

Some links earn us a commission. It never changes the specs or what we recommend.

Factory tuning settings

Idle speed	2,800 rpm
Max speed	10,500 rpm
L screw (low speed)	1 turn
H screw (high speed)	1 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 (12)

301 part numbers. The catalogue files these under the 012, one bill of material covering this model.

Data confidence

Chain, bar, mount and displacement confidence comes from the shared 009 · 010 · 011 · 012 family research.

displacement · sourcedbar real-world · estimatedbar mount · sourcedchain · sourceddates · sourcedvariants · sourced

Something wrong or missing for the 012 AV / AVE? Report a correction →