Troy-bilt tb4218 gas chainsaw. this gas chainsaw features a 42cc, full crank, 2-cycle engine. it comes with springassist technology for easier pull starts and a 18 inch low-kickback bar and chain cuts through limbs fast. the adjustable, automatic bar and chain oiler ensures proper lubrication, while the automatic, inertia activated chain brake adds operator safety. the 3-point anti-vibration handles and lightweight design allows for easier handling and greater comfort. comes with 2-cycle engine oil and a 2-year limited warranty.