Efco chain saws feature legendary Italian design and performance, delivering astounding quality and reliability. These chain saws utilize engines with linear torque speed for rapid and responsive acceleration — even during extended periods of use. Nylon filters improve performance and ensure trouble-free operation and easy maintenance. Chain Saw Type: Gas, Bar Length (in.): 20, Chain Pitch (in.): 0.375, HP: 4.3, Cylinder Displacement (cc): 63.4, Primer Bulb: Yes, Tool-Less Chain Tensioning: No, Case Included: No Designed for heavy farm and commercial use Steel crankshaft and piston with 2 rings for maximum long-term reliability 6 rubber antivibration mounts for operator comfort Cylinder with compression relief system to ensure smooth starting Extra-large fuel tank combined with low rates of consumption results in over 40 minutes of operation on a full tank Oregon bar and chain 5 year consumer/2 year commercial limited warranty.