The efficient filtering concept – long-life air filter system with pre-separation and a newly developed HD2 filter
The STIHL MS 261 Chainsaw has an impressively long filter life which is five times that of the MS 260. This is because it is fitted with a new type of long-life air filter system with pre-separation to remove coarse dirt particles so there's less work for the actual filter to do. This newly developed HD2 filter is made from polyethylene filter material with up to 70% finer pores than fleece and polyamide filters to trap even very fine dust. In addition, it is oil and water-repellent and thus very easy to clean. The PET-covered round filter cartridge with quick-release lock enables the filter to be assembled and disassembled in next to no time, without using tools.