Description Experience a new chainsaw generation. Husqvarnaâs 545 Mark II chainsaw is a 50cc unit thatâs ready for felling, limbing and bucking of midsize trees. Designed for professional forestry and tree care crews, this durable saw has a magnesium crankcase and improved power from the X-Torq engine. Comfortable and efficient operation is guaranteed by innovative features like the SmartStart starter, LowVib anti-vibration technology and AutoTune carburetor. Comes outfitted with a Husqvarna X-Cut chain and X-Force bar.Automatic Engine Optimization: AutoTune automatically adjusts engine settings for reliable starting and optimal performance â no manual carburetor adjustments needed"Advanced Air Filtration: Air Injection⢠technology filters up to 98% of debris, extending engine life by removing larger dust particles before they reach the air filter xact filtration percentage is dependent on model."Powerful and Efficient X-TORQ Engine: Advanced engine technology with highly-efficient combustion delivers exceptional power and torqueAnti-vibration System: LowVib technology isolates engine vibrations from your hands for maximum comfortHusqvarna Chainsaw DNA: Exclusive ergonomic features make our legendary saws more comfortable to use and easier to controlSlim-Body Design: Narrow body design for increased flexibility and controlThree-Piece Crankshaft: Forged three-piece crankshaft delivers maximum durability for even the toughest of jobsEnhanced Cooling Capacity: Optimized system delivers reliable starting, improved performance and longer engine lifeEquipped with X-CUT Chain: Designed and manufactured by Husqvarna to deliver enhanced cutting performance, long-lasting sharpness, and exceptional durabilityFlip-Up Fuel Cap: Fully-threaded flip-up cap is easy to open and secures firmlyRetained Bar Nuts: Easily keep track of bar nutsSnap-Lock Cylinder Cover: Saves time when changing spark plugs or performing daily maintenanceAdjustable Oil Pump: Control oil flow to fit any applicationSmart Start Technology: Up to 40% less force needed to pull starter cord for easy and fast starting with minimal effortSide Chain Tensioning: Quickly and easily adjust the chain