Stihl MS 271 Farm Boss vs Stihl MS 391 Chainsaw Comparisons
Specs that are different are highlighted in red. Specs that are better are written in bold. Notice that a chainsaw with a significantly larger number of bolded specifications is not necessarily a better chainsaw.
Chainsaw Details
Subjects of comparisons - brand and model.
| Manufacturer | Stihl | Stihl |
| Model | MS 271 | MS 391 |
| Photo |  |
 |
| Class | Farmowner | Farmowner |
| Warranty homeowner | 365 days 1 year |
365 days 1 year |
| Warranty commercial | 90 days 0.25 year |
90 days 0.25 year |
| Your rating |
Engine Specs Comparison
Power, displacement and type of fuel of the chainsaws.
| Fuel type | Gas | Gas |
| Fuel oil ratio | 50:1 | 50:1 |
| Weight | ~5.57 kg ~12.28 lbs |
~6.2 kg ~13.67 lbs |
| Engine | Stihl 2-Mix | Stihl 2-Mix |
| Power | 3.49 hp 2.6 kW |
4.5 hp 3.36 kW |
| Displacement | 50.2 cm³ 3.06 in³ |
64.1 cm³ 3.91 in³ |
| Torque | Nm | Nm |
| Idle speed | 2800 RPM | 2800 RPM |
| Max speed | 13000 RPM | 13000 RPM |
| Spark plug | Bosch WSR 6F, NGK BPMR 7A | Bosch WSR6F, NGK BPMR7A |
| Spark plug gap | 0.5 mm 0.02 in |
0.5 mm 0.02 in |
Chain and Bar Comparison
Detailed chain and bar specifications side by side.
| Bar length | 45.72 cm 18 in |
45.72 cm 18 in |
| Min bar length | 45.72 cm 18 in |
40.64 cm 16 in |
| Max bar length | 45.72 cm 18 in |
50.8 cm 20 in |
| Chain | Rapid Micro 3 (26 RM3) Type 3634 | Rapid Micro (RM) |
| Pitch | .325 | 3/8" |
| Gauge | 1.6 mm 0.06 in |
1.6 mm 0.06 in |
| Sprocket | Spur 7 Tooth | Spur 7 Tooth |
Other specs
Fuel consumption, noise and liquid capacities.
| Fuel consumption | 1.418 l/hr 0.37 gal/hr |
1.779 l/hr 0.47 gal/hr |
| Fuel capacity | 0.5 l 16.91 fl oz |
0.6 l 20.29 fl oz |
| Oil tank capacity | 0.24 l 8.12 fl oz |
0.35 l 11.83 fl oz |
| Noise (ear level) | 103 dB(A) | 105 dB(A) |
| Vibration front | 4.5 m/s² 14.76 ft/s² |
4 m/s² 13.12 ft/s² |
| Vibration rear | 4.5 m/s² 14.76 ft/s² |
4 m/s² 13.12 ft/s² |
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