BRAND NEW / NEVER USED RETAIL - $ 556.78. ECHO chainsaw CS-490P with 20" bar cuts up to 35" diameter logs Professional-grade bar & chain - superior operation & durability Ergonomic front handle improving comfort & maneuverability The gas powered X Series ECHO chainsaw CS-501P features a 50.2 cc professional-grade, 2-stroke cycle engine and a 20 in. bar and chain. Its ergonomic, aluminum front handle is great for improved comfort and maneuverability. This high performing chainsaw is dependable and offers 20% more power than the CS-490. 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 Gas powered chainsaw features a 50.2 cc professional-grade 2-stroke gas engine Chainsaw comes with a 1-year commercial/5-year consumer warranty Comes with professional-grade 20 in. bar and chain for maximum cutting performance and durability Increased power with professional features Powerful and lightweight Side-access chain tensioner for easy chain adjustment Captive bar nuts won't come loose Decompression valve for easy starting Tool-less access air filter cover for easy in-field maintenance Automatic, adjustable clutch-driven oiler - reduces oil consumption Ergonomic aluminum front handle - for improved comfort and maneuverability G-Force Engine Air Pre-Cleaner maintains clean air supply to engine Safety tip (kick guard) sold separately as an accessory.