The Stihl MS 311 is a mid to high cost gas chainsaw. This is a chainsaw made for a mid-range amount of use. In promotion, Stihl emphasizes the fact that the MS 311 improves fuel efficiency by 20 percent, and reduces emissions by 50 percent (compared to previous models). The anti-vibration system of this chainsaw ensures comfortable operation and handling, as well as reduced fatigue. The pre-seperation air filtration technology extends the cleaning life of the air filter so that you do not have to be constantly maintaining it. The side-access chain tensioner allows you to get in and adjust the chain without putting your hands near it. The fuel and oil caps require no tools to be opened, and have retainers on them that prevent them from being lost. This chainsaw differs from the higher cost MS 391 in that the MS 391 has more power (4.4 HP as opposed to the 311's 4.2 HP), and has the lntelliCarb compensating carburetor (which measures air on the clean side of the air filter and adjusts its metering diaphragm accordingly, a procedure that keeps RPM levels even when the filter begins to clog). However, the MS 391 lacks the decompression valve of the MS 311 (which makes starting easier). For the MS 311, Stihl recommends using the 33 RSC3 60 Oil-O-Matic saw chain with a 16 inch guide bar.
- 3.6 cu. in. displacement
- 4.2 HP
- Weight: 14.1lbs.
- 20.3oz. fuel capacity
- 11.8oz. chain oil capacity
- 3/8" RSC3 Oil-O-Matic chain
- 16"-20" recommended guide bar lengths
- Pre-seperation filtration system
- 20% more fuel efficiency (compared to previous models)
- 50% emission reduction (compared to previous models)
- Anti-vibration system
- Toolless fuel and oil caps with retainers
- Side-access chain tensioner
- Decompression valve