Stihl model · engine series 1130
018 31.8 cc
- Chain
- 3/8″ Picco · .043–.050″
- Recommended bar
- 12–16″
- Mount
- 3005 / A074
Model displacement · family chain/bar fitment. Details & confidence ↓
Parts diagrams (10)
Browse saved diagrams & other models ↗257 parts entries · catalogue coverage: 018. Check the sheet’s variant and serial notes.
Model & family fitment specs
Displacement is specific to the 018 roster record. Chain, bar and mount are the published family fitment for engine series 1130; confirm the pitch, gauge and drive-link count stamped on your installed bar before ordering.
Chains & bars that fit the 018
Pitch & gauge 3/8″ Picco · .043–.050″ · recommended bar 12–16″ · 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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Service & tuning
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 3500 |
| Air filter | 1130 124 0800 · 1130 124 0801 HD |
| Starter rope | 3 mm · 31.5–36″ |
| Guide coverage | 017 · 018 · MS 170 · MS 180 |
| Source | 2019 STIHL Technical Reference Guide · sourced |
- Guide lists 30.1 cc for 017/MS 170 and 31.8 cc for 018/MS 180.
Factory tuning settings
| Idle speed | 2,800 rpm |
| L screw (low speed) | 2 (LD-SCHRAUBE) turns |
| LA screw (idle stop) | 1/2 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.
About the 018
31.8 cc → MS 180
Production, market and rarity are specific to this model’s roster record.
Related models in series 1130
Shared engine-family membership does not establish parts interchangeability.
Data confidence
Chain, bar, mount and displacement confidence comes from the shared 017/018 · MS 170/180 family research.
Something wrong or missing for the 018? Report a correction →