Hello Katsma. Thank you for sharing your experience. New chains tend to stretch, so we recommend checking the chain tension often and adjusting as needed. The chain is properly tensioned when there is no sag on the underside of the guide bar, and it feels snug but can still be rotated by hand without binding. Keep in mind that a chain adjusted while warm may become too tight as it cools. For best results, always check and set the “cold tension” before your next use. We have a video that helps explain how to tension the chain. You can check it out here: (https://youtu.be/WJOGDpSPzJM?t=84). After attempting the troubleshooting tip and, the problem persists. We recommend contacting our customer support team for assistance with properly submitting a warranty claim. They can be reached either using the online chat function, on Greenworks Tools page, accessible by clicking “Chat with an Expert” in the bottom corner of your screen, Chat with a Live Agent I Monday - Friday: 9:30AM – 5PM EST or by calling 1-888-909-6757 between 9AM and 7PM EST, M-F. Saturday: 9AM to 5PM EST. Sunday: 9AM to 5PM EST. So, our experts can discuss your experience; please have your unit, battery and charger with you along with the model and serial number to complete troubleshooting to ensure quick resolution is provided. *Hours are subject to change.