This is Husqvarna's 6.97HP/94cc 2-Cycle Gas Engine with a heavy duty magnesium crankcase & three-piece crankshaft. Smart Start® Recoil Starter and is designed so the machine starts quickly with minimum effort. Centrifugal Air Injection Cleaning System which removes larger dust and debris particles. Quick-Release Air Filter & Cover. Saves time and facilitates cleaning air filter or changing spark plug. RSN (Replaceable Sproket Nose) Solid Guide Bar. Epoxy coated to protect against scratches and corrosion. Replaceable tip is available as a spare part. LowVib® Vibration Damping System and reduced vibration levels to operator lessens fatigue. Distinct, colored marks used for aiming direction of timber fall. Inertia Activated Chain Brake. Reduces the liklihood of injury due to kickback.