Overview
The STIHL MS 251 WOOD BOSS Chainsaw is powerful, fuel-efficient and easy to use. Ergonomically designed to bring you maximum comfort during use, this tool produces 50 percent less emissions (as compared to previous models) for a smaller impact on the environment. The MS 251 WOOD BOSS packs features like a Master Control Lever and easy-to-refill fuel and oil tanks, so you can worry less about starting and operating your equipment, and have more time getting your outdoor jobs done. *A majority of STIHL products sold in America are made in America of U.S. and global materials.
Features
IntelliCarb™ Compensating Carburetor
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. IntelliCarb™ uses air from the clean side of the air filter to control the diaphragm and flow of fuel. As the air filter becomes dirty and less air is available for the carburetor, the IntelliCarb™ system adjusts the fuel flow to compensate for the decrease in air flow. This is in contrast to typical carburetors that utilize this air from the “dirty” side of the air box.
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.
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.
Master Control Lever™
The Master Control Lever™ is an easy to use single lever, operating the choke, starting throttle lock, and on-off switch. The operator must pull the throttle trigger before moving the Master Control Lever™ to the choke position.
Throttle Trigger Lockout
This safety feature must be depressed before the trigger can be activated.
High-Tech Polymer Housings
Housings are lightweight, withstand greater impact, and are corrosion-resistant.
Made in America
A majority of STIHL products sold in America are made in America of U.S. and global materials.
Specifications
| POWER SOURCE | Gas |
| POWERHEAD WEIGHT | 11.0 lbs. |
| GUIDE BAR LENGTH (Recommended) | 18 in. |
| OILOMATIC® CHAIN | .325" RM3 |
| CHAIN OIL CAPACITY | 6.7 oz. |
| ENGINE POWER | 3.0 bhp |
| FUEL CAPACITY | 13.2 oz. |
| DISPLACEMENT | 45.6 cc |
| INTENDED USE | Homeowner |