Stihl MS 291

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Reduced-Emission Engine Technology - Caring for Nature
The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.
Built in the USA
A majority of STIHL gasoline-powered units sold in the United States are built in the United States from domestic and foreign parts and components.

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.
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.

POWER SOURCE	Gas
POWERHEAD WEIGHT	12.3 lbs.
GUIDE BAR LENGTH (Recommended)	16 in.
OILOMATIC® CHAIN	.325 RM3
CHAIN OIL CAPACITY	8.12 oz.
ENGINE POWER	3.76 bhp
FUEL CAPACITY	16.9 oz.
DISPLACEMENT	3.39 cu. in.
Note: STIHL recommends #3634 (26 RM3 67) OILOMATIC® saw chain and 16" 3003 000 6813 Ematic™ guide bar combination. Compatible guide bar ranges: 16" to 20"

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