MS 291
For MS 291, bar length is 16"; pitch is .325"; gauge is 1.6mm; drive links is 67; stihl chain part number is 3686/67, verified against its source on 2026-08-04.
- Model
- MS 291
- Bar length
- 16"
- Pitch
- .325"
- Gauge
- 1.6mm
- Drive links
- 67
- STIHL chain part number
- 3686/67
What the source says
MS 291, MS 291 C | 16" 18" | .325" .325" | 1.6mm 1.6mm | 67 74 | <https://www.lsengineers.co.uk/rm-rapid-micro-chain-1-6mm-0-063-325-genuine-stihl-oem-no-3686-000-0067.html> 3686/67 <https://www.lsengineers.co.uk/rm-chain-18-ms291-stihl-part-3686-000-0074.html> 3686/74
— lsengineers.co.uk, retrieved 2026-08-04
Source
- lsengineers.co.ukhttps://www.lsengineers.co.uk/advice-centre/stihl-chain-selector