Several buyers suggest coming up with a mowing pattern that moves away from the outlet and thus makes it harder for you to trip over the cord. One buyer found that the motor would get dirty during use and recommended opening it up and cleaning it with compressed air. When you first lay eyes on the Sun Joe MJ401E Mow Joe 14-inch 12 Amp Electric Lawn Mower you may be struck by how small it is. At 29 pounds it weighs almost half as much as the next lightest mower on our list. This makes it easy to maneuver but it does raise questions of durability.
With the mower still on its side grab your socket wrench and wood block. Place the block inside the blade well. This is to prevent the blades from turning while you loosen their bolts. Remove the blade mounting bolt/bolts. A typical mower will have one blade like the Craftsman 37700 I serviced for this guide (one mounting bolt). Some like my Honda HRR216VKA have two blades an upper and a lower (two mounting bolts). Each blade should have at least two cutting edges.
Place a drip pan or other container on the side of the mower with the filler. Carefully tilt the mower so oil drains out and into the pan. Discard the spent oil into a proper disposal vessel. Now slowly pour fresh oil into the mower. For the specific type of oil you need check your instruction manual. Make sure to add only as much as your particular model requires. Remember to let the mower sit undisturbed for a few minutes so the oil settles properly inside the engine.