Thank you for sharing your detailed experience. We are sorry to hear the lawn mower has become frustrating to use over time, especially with grass build up under the deck, reduced cutting performance, and battery runtime concerns. For best performance, we recommend mowing when the grass is dry, raising the cutting height if the lawn is thick or overgrown, slowing the mowing pace in heavy areas, and regularly stopping only after removing the battery to safely clear compacted clippings from the underside of the deck. It may also help to inspect the blades for dullness or damage, confirm the blades are properly installed and tightened, keeping the deck clean between use, and making sure the batteries are fully charged, properly seated, and stored within the recommended temperature range. If the mower is leaving an uncut line, excess buildup or blade condition may be contributing to the issue, so blade maintenance and deck cleaning are good first checks. For additional help, please visit the Greenworks YouTube channel for product videos and maintenance guidance, or contact the Greenworks Customer Success team with your mower model number, serial number, batteries, and charger available so they can help troubleshoot your specific unit and review available support options. They can be reached either using the online chat function, on Greenworks Tools website, or by calling 1-888-909-6757.

Thank you for sharing your feedback with us. We are thrilled to hear that your Greenworks 60V 25" Self-Propelled Lawn Mower is starting up easily and delivering great cutting performance. We appreciate your honest note regarding the weight and resistance when pushing the unit without power; because self-propelled mowers feature integrated wheel-drive transmission gears, pushing them manually when the battery is depleted creates natural mechanical drag. To help maximize your runtime and make yard work as seamless as possible, here are a few quick tips to keep in mind: * Dual-Port Auto-Switching: Ensure both 4.0Ah batteries are fully charged and properly latched into both battery ports before mowing, as the system automatically switches from one battery to the other to extend your uninterrupted mowing time. * Managing Drag & Self-Propel Drive: When you reach the end of a pass or need to pull the mower backward, release the self-propel drive lever a second or two before stopping your forward motion, this allows the drive transmission gears to fully disengage, making turns and manual pulling much smoother. * Deck Height & Grass Conditions: Avoid cutting more than one-third of the grass height at a time and mow when the lawn is dry. Cutting tall or damp grass places extra load on the motor, which drains batteries significantly faster. For helpful video walkthroughs, battery care guides, and mowing tips, feel free to visit the official Greenworks YouTube channel. If you have questions about runtime, picking up a secondary battery set, or need any product support down the road, please d not hesitate to reach out directly to our Greenworks Customer Success Team at 1-888-909-6757 or through our online support center, we are always happy to help!