Husqvarna handheld equipment includes a two year factory warranty by default. To extend this warranty as a consumer (someone who's equipment is solely for personal and home use), you may select "add 1 year extended warranty with 6 pack of 2 stroke oil" on the product's page. To qualify for this 1 year extended warranty, the 6 pack of 2 stroke oil must be purchased at the same time as the handheld equipment. Both items must be listed on the original invoice or receipt together. The buyer must keep their proof of purchase for the length of warranty should verification be needed. If/when you take your equipment to a certified local Husqvarna dealer, they reserve the right to ask for this receipt prior to warranty work being performed. As a courtesy to our customers, we submit product warranty registration.