STIHL MSA 300 C-O replacement chain and bar size
Verified factory configuration for the AP System model/configuration.
Factory configuration
- Bar length
- 14 in
- Pitch
- 3/8 STIHL PICCO
- Gauge
- 0.050 in
- Drive links
- 50
- OEM chain
- 63 PS3 50
- OEM bar
- 3005 000 4809
Configuration and revision caveat
Manufacturer-recommended 14-inch configuration; catalog product overview lists broader optional bars, so verify installed bar
Replacement chain check for the STIHL MSA 300 C-O
Start with the factory configuration above: 14 in bar, 3/8 STIHL PICCO pitch, 0.050 gauge, and 50 drive links. The cited OEM chain part is 63 PS3 50. This applies only to the cited configuration; Manufacturer-recommended 14-inch configuration; catalog product overview lists broader optional bars, so verify installed bar
- Remove the battery and read the installed guide-bar stamp.
- Match pitch, gauge, and drive-link count to this page.
- If the bar has been replaced or its stamp differs, stop and use the installed-bar specifications instead.
How we verified this
Opened 2025 catalog; printed page 167/PDF page 85, STIHL battery-powered models table
Open manufacturer source (manufacturer catalog; checked 2026-08-12).
See models with this exact pitch, gauge and drive-link signature