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18-Inch 50.2-CC Farm Boss® Gas Chain Saw
- Mfg.#
- MS 271 18
- Sku#
- 3649506
- 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. Air drawn into the engine is first separated via centrifugal force, ejecting the heavier dirt particles before being routed to the air filter. This pre-separation means less dirt to be captured by the air filter, resulting in less frequent cleaning and maintenance.
- 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.
- Anti-Vibration System - STIHL has developed a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.
* Estimated stock levels as of Mon, May 11, 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 Gauge | .050 in |
| Chain Oil Capacity | 8.12 oz. |
| Chain Pitch | .325 in RM3 |
| Chain Type | OILOMATIC® |
| Displacement | 50.2 cc |
| Engine | 3.49 bhp |
| Fuel Capacity | 16.9 oz. |
| 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: Cancer and Reproductive Harm - 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) and §30 of UL 1662/ ANSI Standard B175.1 (electric chainsaws). Ask your STIHL dealer about safe operating procedures and the advantages of the STIHL Quickstop® chain brake, STIHL Quickstop® Plus additional chain braking feature, STIHL reduced kickback bars and STIHL low-kickback saw chains. |
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Videos
Related Documents
Brochure (PDF)
Warranty (PDF)
