Stihl MS 391
Gas Chainsaws Forestry · Model 1027244
The Stihl MS 391 is a professional forestry gas chainsaw, built for all-day felling, bucking, and production cutting, with a 64.1 cc engine making 4.4 hp and a 18-inch bar. It weighs 13.7 lb (6.2 kg).
For pros: Professional rear-handle chainsaws
At a glance
Displacement
3.91 cu in (64.1 cc)
Engine Power
4.4 hp
Weight
13.67 lb (6.2 kg)
Fuel Capacity
0.16 gal (0.6 L)
Guide Bar Length
17.99 in (457 mm)
Independent reference database. Specs are compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
Specs verified against the manufacturer spec sheet on — stihlusa.com.
Engine
| Specification | Value |
|---|---|
| Displacement | 3.91 cu in (64.1 cc) |
| Engine Power | 4.4 hp |
| Power | 3.3 kW |
| Fuel Capacity | 0.16 gal (0.6 L) |
| Power-to-Weight | 1.9 kg/kW |
Bar & Chain
| Specification | Value |
|---|---|
| Guide Bar Length | 17.99 in (457 mm) |
| Oil Capacity | 11.8 fl oz (348.97 mL) |
| Chain Pitch | 3/8" |
| Chain Gauge | 0.050 / 0.063 in |
Dimensions & Weight
| Specification | Value |
|---|---|
| Weight | 13.67 lb (6.2 kg) |
| System Weight | 16.73 lb (7.59 kg) |
| Length | 18.03 in (458 mm) |
General
| Specification | Value |
|---|---|
| Power Source | gas |
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Source: Stihl (manufacturer) · View archived copy. Specs normalized for comparison; verify with the manufacturer before purchase.