- Some stock photographs may show options that are not included. Please check product description.
25-Inch 64.1 cc Gas Chain Saw
- Mfg.#
- MS 391 25
- Sku#
- 3661055
- This mid-range chainsaw comes with an anti-vibration system and reduced exhaust emission engine technology.
- The IntelliCarb™ Compensating Carburetor is designed to automatically adjust the air/fuel ratio when the air filter becomes restricted or partially clogged and maintains the engine’s correct RPM.
- Bumper Spikes - These spikes prevent pull-in and provide better control, making cutting easier.
- Toolless Fuel and Oil Caps with Retainers - Simply lift the lever and twist the caps to remove or tighten. There’s no need to use a tool to tighten or loosen.
- Pre-Separation Air Filtration System
* Estimated stock levels as of Wed, Apr 29, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
STIHL engine technology means low fuel consumption, longer run times, and reduced exhaust emissions in this high-powered chainsaw. The MS 391 features STIHL engine technology that adds fuel efficiency while reducing exhaust emissions, as compared to other chainsaw models. Though equal in weight, the MS 391 is more powerful than the MS 311. Add to that an optimal power-to-weight ratio and you have a chainsaw that’s cut out for the big jobs in field, farm, and ranch. Felling trees, cutting firewood, and cleanup after the storm just got a whole lot easier with the rugged MS 391.
Not for sale in California.
Specifications
General
| Blade | 20 in. |
|---|---|
| Chain Oil Capacity | 11.8 oz. |
| Chain Pitch | 3/8 in |
| Chain Size | 3/8" RS3 |
| Chain Type | OILOMATIC® CHAIN |
| Engine | 64.1 cc |
| Engine Power | 4.4 bhp |
| Fuel Capacity | 20.3 oz. |
| Gauge | 0.063 in |
| Number of Drive Links | 84 |
| Power Source | Gas |
| Powerhead Weight | 13.67 lbs. |
| Type | Gas Chain Saw |
Manufacturing Details
The following information is subject to change without notice
| Manufacturer Warranty | 1 Year |
|---|---|
| Prop 65 Warning |
WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
|
| Shop USA | Yes |
Label Information
| Precautionary Statement | CAUTION: The occurrence called “kickback” can cause serious or fatal injury. Always read the instruction manual carefully before using your saw. STIHL uses a green and yellow color-coding system to help you select a powerhead, bar and chain combination that complies with the kickback requirements of ANSI Standard B175.1 (gasoline-powered saws). STIHL recommends the use of green reduced kickback bars and green low kickback chains on all STIHL chainsaws. Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. |
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Videos
Related Documents
Brochure (PDF)
Warranty (PDF)
