Hello Veni,

Thank you for your feedback! Sorry to hear you are not satisfied with the cut of this lawn mower. The cause of streaking could be the way the user mows, but it also may be the result of some generally causes that create this problem. Overlapping each pass in the lawn you make with the lawnmower allows the mowing blades to contact each blade of grass and ensures no areas are missed. The overlap need not be very large. Overlapping by only 1 or 2 inches is enough. As you complete a pass and make your turn for the next one, line up the mower’s wheels with the indentation the wheels made during the previous pass.
Another suggestion to take into consideration, a clean mowing deck. Over the course of the mowing season, the underside of the mower’s deck collects dirt, mud, and grass clippings. Even if you mow your grass when it’s dry, the blades still attract some moisture, which tends to make grass clippings clump underneath the deck. This debris hampers both air and grass clipping movement inside the deck. Streaking could be one indication that the deck needs cleaning. With the battery removed or mower unplugged check the underside. Scrape off grass, mud and dirt clinging to the deck by using a wired brush be careful not to cut your hands on the mower blades.
Hoping these suggestion help. If you have any follow up questions, or concerns we urge you to contact Greenworks Pro toll-free helpline at 1-855-345-3934 for further assistance, we are happy to help.