Due to our high product/quality standards, this provides us the ability to back all our machines with warranties in which we stand by 100 %. Your striping kit is backed by a one-year manufacturer warranty to protect you against manufacturing defects (starts as of the purchase date). To ensure the product is used properly, we recommend going over the installation manual on page 5, under the "Operation" section, which provides all information for the best Toro striping kit experience. Once the installation instructions have been reviewed, we recommend contacting The Home Depot tool rental or a Toro authorized service mechanic (Toro.com/dealer) for warranty inspection. If you have additional questions or concerns, our customer care is happy to help at 888-384-9939 (US) or 800-544-5364 (CA).