MS 251 WOOD BOSS® Fuel-Efficient Chainsaw | STIHL USA OverviewReviewsThe MS 251 WOOD BOSS® is perfect for felling small trees, pruning and thinning, and cutting firewood simply and efficiently.See more on stihlusa MS 251 CB-E | Powerful Lightweight Adjustable - STIHL USA OverviewReviewsThe MS 251 C-BE powerful and lightweight chainsaw features all the comfort and ease of the MS 251, but also is easy to start and adjust on the fly.See more on stihlusa MS 251 - STIHL MS 251 Wood Boss® Chainsaw A sturdy, compact chainsaw with up to 20% less fuel consumption and up to 70% fewer emissions compared to STIHL two-stroke engines of the same performance class without 2-MIX technology. Easy to guide, great handling. The ideal saw for groundskeeping. Great for cutting firewood. Side-mounted chain tensioning for safe and easy chain tensioning. MS 251 - Top range saw for property maintenance - Stihl The new MS 251 is ideal for a variety of applications, from cutting firewood to timber construction. This high torque engine is easy to start and comfortable to use, with a high cutting performance. Emissions are cut by 70% and fuel consumption is up to 20% lower compared to a STIHL 2-stroke engine of the same power output without 2-MIX technology. stihl ms 251 | eBay Find great deals on eBay for stihl ms 251 and stihl ms231. Shop with confidence. stihl ms251 | eBay Find great deals on eBay for stihl ms251 and stihl ms231. Shop with confidence. Stihl MS 251 Chainsaw (MS251 CBE) Parts Diagram Stihl MS 251 Chainsaw (MS251 CBE) Parts Diagram Select a page from the Stihl MS 251 Chainsaw diagram to view the parts list and exploded view diagram. All parts that fit a MS 251 Chainsaw . Pages in this diagram. Air Baffle. AV System. Carburetor WTF-2. Chain Brake.