The professional-grade SRM-225 is ECHO's most popular straight-shaft gas trimmer. Lightweight, well balanced and easy to use, this trimmer also is fuel efficient. With its long reach and great features, the ECHO SRM-225 trimmer helps you get your yard in great shape. All ECHO yard trimmer engines are certified with the highest EPA engine durability rating. Use a 50:1 ratio of fuel to oil mix for 2-stroke cycle engines, recommend using only fresh gas with a minimum octane rating of 89 or higher (mid-grade to premium) at all times 50:1 ratio equal 1 US Gal. 89 octane plus 2.6 fl. oz. ECHO PowerBlend Oil or ECHO Red Armor Oil Backed by a 5-year consumer/2-year commercial warranty Weed trimmer features a 21.2 cc professional-grade 2-stroke engine i-30 starting system reduces starting effort by 30% Weed wacker comes with a 5-year consumer/2-year commercial warranty Ergonomic cushioned front and rear handles for user comfort Speed-Feed 400 trimmer head reloads in seconds without tools or disassembly 17 in. cutting swath Fuel efficient, entry-level, professional grade trimmer 59 in. straight shaft with flex cable drive provides a long reach Reduced-effort starting system makes start-ups a breeze Bump head trimmer line release enables continuous operation by instantly letting out premeasured lengths of line Low-vibration design helps reduce fatigue for longer use.