Keep your lawn pristine with the SENIX 21-inch 140 cc self-propelled lawn mower. This front-wheel drive, single-speed self-propelled lawn mower features a 21-inch steel deck and is powered by a reliable Briggs & Stratton 140 cc gas powered engine that is designed to provide longer engine life, low vibration, and easy maintenance. The 4-stroke engine is eco-friendly offering low emissions, low fuel consumption, no mixing of oil and gas, and low noise. Prime N' Pull start makes it easy to start the mower every time, and the 3-in-1 convertible deck allows you to mulch, side discharge, or rear bag grass clippings with our 16 gallon grass bag. This lawn mower is ideal for small to medium size yards. The durable 8-inch front and 11-inch rear wheels provide great maneuverability through rough terrain and uneven surfaces, can be adjusted to 6 different positions from 1.25-inches to 3.75-inches using a dual-lever to meet the needs and conditions of your lawn. The fold down handle allows for compact and easy storage. All SENIX lawn mowers are backed by our 2-year limited warranty for your peace of mind.