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18-Inch 50.2 cc Farm Boss® Gas Chain Saw
- Mfg.#
- MS 271 18
- Sku#
- 3654613
- Powerful and fuel-efficient chainsaw with reduced exhaust emission engine technology. This chainsaw is built tough for felling, firewood cutting, and storm cleanup tasks.
- 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 - This time-saving technology boosts the efficiency of the engine’s filter system, doubling the time between air filter cleanings.
- Side-Access Chain Tensioner - The side-access chain tensioner makes it much more convenient for the user to adjust the saw chain with a bar wrench as opposed to the typical location of the guide bar adjustment screw.
* Estimated stock levels as of Tue, May 19, 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
The MS 271 FARM BOSS® is a mighty boss of a chainsaw. Loaded with features and technology, the FARM BOSS® starts with a highly efficient engine that delivers 20% longer run times between refueling—while cutting exhaust emissions in half compared to the previous model. The pre-separation air filtration system is extraordinarily effective. Your air filter can last up to five times longer. All this STIHL engineering in one compact, ergonomic design—now that’s high performance.
Not for sale in California.
Specifications
General
| Blade | 18 in. |
|---|---|
| Chain Oil Capacity | 8.12 oz. |
| Chain Pitch | 0.325 in |
| Chain Size | .325" RM3 |
| Chain Type | OILOMATIC® CHAIN |
| Engine | 50.2 cc |
| Engine Power | 3.49 bhp |
| Fuel Capacity | 16.9 oz. |
| Gauge | 0.063 in |
| Power Source | Gas |
| Powerhead Weight | 12.3 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)
